{"id":3578,"date":"2022-09-10T00:15:49","date_gmt":"2022-09-09T22:15:49","guid":{"rendered":"https:\/\/tazgmbh.de\/?p=3578"},"modified":"2022-09-10T00:15:49","modified_gmt":"2022-09-09T22:15:49","slug":"waves-with-cracks","status":"publish","type":"post","link":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/","title":{"rendered":"Waves with cracks"},"content":{"rendered":"<div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"background-color: rgba(255,255,255,0);background-position: center center;background-repeat: no-repeat;border-width: 0px 0px 0px 0px;border-color:#eae9e9;border-style:solid;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start\" style=\"max-width:1331.2px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-0 fusion_builder_column_1_1 1_1 fusion-flex-column\"><div class=\"fusion-column-wrapper fusion-flex-justify-content-flex-start fusion-content-layout-column\" style=\"background-position:left top;background-repeat:no-repeat;-webkit-background-size:cover;-moz-background-size:cover;-o-background-size:cover;background-size:cover;padding: 0px 0px 0px 0px;\"><div class=\"fusion-text fusion-text-1\"><h2>Examination of shafts with cracks<\/h2>\n<p><strong>1. Order Description<\/strong><\/p>\n<p>Cracks were found on forged shafts after induction hardening. Through a fractographic SEM &#8211; examination of the cracks and a metallographic comparison of n. i. O &#8211; Share with i. O \u2013 parts, the cause of the crack should be determined.<\/p>\n<p><strong>2.1. REM \u2013 examination<\/strong><\/p>\n<p>The location and extent of the cracks, both axially and radially, are documented in the macro image.<\/p>\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-1 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 50%;\n\t\t\t}\n\t\t\t#gallery-1 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-1 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-1' class='gallery galleryid-3578 gallery-columns-2 gallery-size-400'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a data-rel=\"iLightbox[postimages]\" data-title=\"makroaufnahmen-der-gerissenen-welle\" data-caption=\"Makroaufnahmen der gerissenen Welle\" href='https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahmen-der-gerissenen-welle.jpg'><img decoding=\"async\" width=\"600\" height=\"401\" src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahmen-der-gerissenen-welle.jpg\" class=\"attachment-400 size-400 lazyload\" alt=\"\" aria-describedby=\"gallery-1-2744\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27600%27%20height%3D%27401%27%20viewBox%3D%270%200%20600%20401%27%3E%3Crect%20width%3D%27600%27%20height%3D%27401%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahmen-der-gerissenen-welle.jpg\" data-srcset=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahmen-der-gerissenen-welle-200x134.jpg 200w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahmen-der-gerissenen-welle-300x201.jpg 300w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahmen-der-gerissenen-welle-400x267.jpg 400w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahmen-der-gerissenen-welle.jpg 600w\" data-sizes=\"auto\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-2744'>\n\t\t\t\tMakroaufnahmen der gerissenen Welle\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a data-rel=\"iLightbox[postimages]\" data-title=\"makroaufnahme-beider-haelften-des-aufgebrochenen-risses\" data-caption=\"Makroaufnahme beider H\u00e4lften des aufgebrochenen Risses\" href='https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahme-beider-haelften-des-aufgebrochenen-risses.jpg'><img decoding=\"async\" width=\"600\" height=\"431\" src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahme-beider-haelften-des-aufgebrochenen-risses.jpg\" class=\"attachment-400 size-400 lazyload\" alt=\"\" aria-describedby=\"gallery-1-2745\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27600%27%20height%3D%27431%27%20viewBox%3D%270%200%20600%20431%27%3E%3Crect%20width%3D%27600%27%20height%3D%27431%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahme-beider-haelften-des-aufgebrochenen-risses.jpg\" data-srcset=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahme-beider-haelften-des-aufgebrochenen-risses-200x144.jpg 200w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahme-beider-haelften-des-aufgebrochenen-risses-300x216.jpg 300w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahme-beider-haelften-des-aufgebrochenen-risses-400x287.jpg 400w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/makroaufnahme-beider-haelften-des-aufgebrochenen-risses.jpg 600w\" data-sizes=\"auto\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-1-2745'>\n\t\t\t\tMakroaufnahme beider H\u00e4lften des aufgebrochenen Risses\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p>The tear was broken open after cutting the sample from the back. The color of the crack surface can be clearly distinguished from the fracture surface of the forced laboratory fracture. The surface of the crack is covered with a quenching agent, which partially spread to the laboratory fracture surface after the cracking, recognizable by the partial discoloration of the laboratory fracture surface.<\/p>\n<p>The crack runs intercrystalline, with the grain boundaries sometimes not running smoothly, but rather showing a &#8220;rounded&#8221; appearance, which suggests a temperature influence near the melting point range, i.e. a hot crack. Since the grains do not have a dendritic structure and impurities or precipitations can be seen on the grain interfaces, it is likely a remelting crack.<\/p>\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-2 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-2 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 33%;\n\t\t\t}\n\t\t\t#gallery-2 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-2 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-2' class='gallery galleryid-3578 gallery-columns-3 gallery-size-400'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a data-rel=\"iLightbox[postimages]\" data-title=\"interkristalliner-bruch-auf-der-rissbruchflaeche\" data-caption=\"Interkristalliner Bruch auf der Rissbruchfl\u00e4che\" href='https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/interkristalliner-bruch-auf-der-rissbruchflaeche.jpg'><img decoding=\"async\" width=\"600\" height=\"449\" src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/interkristalliner-bruch-auf-der-rissbruchflaeche.jpg\" class=\"attachment-400 size-400 lazyload\" alt=\"\" aria-describedby=\"gallery-2-2746\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27600%27%20height%3D%27449%27%20viewBox%3D%270%200%20600%20449%27%3E%3Crect%20width%3D%27600%27%20height%3D%27449%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/interkristalliner-bruch-auf-der-rissbruchflaeche.jpg\" data-srcset=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/interkristalliner-bruch-auf-der-rissbruchflaeche-200x150.jpg 200w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/interkristalliner-bruch-auf-der-rissbruchflaeche-300x225.jpg 300w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/interkristalliner-bruch-auf-der-rissbruchflaeche-400x299.jpg 400w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/interkristalliner-bruch-auf-der-rissbruchflaeche.jpg 600w\" data-sizes=\"auto\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-2-2746'>\n\t\t\t\tInterkristalliner Bruch auf der Rissbruchfl\u00e4che\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a data-rel=\"iLightbox[postimages]\" data-title=\"eingerundete-koerner\" data-caption=\"z. T. \u201eeingerundete\u201c K\u00f6rner\" href='https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/eingerundete-koerner.jpg'><img decoding=\"async\" width=\"601\" height=\"450\" src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/eingerundete-koerner.jpg\" class=\"attachment-400 size-400 lazyload\" alt=\"\" aria-describedby=\"gallery-2-2753\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27601%27%20height%3D%27450%27%20viewBox%3D%270%200%20601%20450%27%3E%3Crect%20width%3D%27601%27%20height%3D%27450%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/eingerundete-koerner.jpg\" data-srcset=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/eingerundete-koerner-200x150.jpg 200w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/eingerundete-koerner-300x225.jpg 300w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/eingerundete-koerner-400x300.jpg 400w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/eingerundete-koerner-600x449.jpg 600w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/eingerundete-koerner.jpg 601w\" data-sizes=\"auto\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-2-2753'>\n\t\t\t\tz. T. \u201eeingerundete\u201c K\u00f6rner\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a data-rel=\"iLightbox[postimages]\" data-title=\"rissbruchflaeche-andere-stelle-mit-schmelzstrukur\" data-caption=\"Rissbruchfl\u00e4che - andere Stelle mit Schmelzstrukur\" href='https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbruchflaeche-andere-stelle-mit-schmelzstrukur.jpg'><img decoding=\"async\" width=\"600\" height=\"449\" src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbruchflaeche-andere-stelle-mit-schmelzstrukur.jpg\" class=\"attachment-400 size-400 lazyload\" alt=\"\" aria-describedby=\"gallery-2-2747\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27600%27%20height%3D%27449%27%20viewBox%3D%270%200%20600%20449%27%3E%3Crect%20width%3D%27600%27%20height%3D%27449%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbruchflaeche-andere-stelle-mit-schmelzstrukur.jpg\" data-srcset=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbruchflaeche-andere-stelle-mit-schmelzstrukur-200x150.jpg 200w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbruchflaeche-andere-stelle-mit-schmelzstrukur-300x225.jpg 300w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbruchflaeche-andere-stelle-mit-schmelzstrukur-400x299.jpg 400w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbruchflaeche-andere-stelle-mit-schmelzstrukur.jpg 600w\" data-sizes=\"auto\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-2-2747'>\n\t\t\t\tRissbruchfl\u00e4che &#8211; andere Stelle mit Schmelzstrukur\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p>Like the crack, the forced laboratory fracture also shows an intergranular cleavage fracture. Individual grains are broken and show microfission surfaces. This smooth intergranular fracture with z. T. expanded grain boundaries and the proportion of transcrystalline fracture with microcleavage surfaces indicates the possibility of hydrogen embrittlement.<\/p>\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-3 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-3 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 33%;\n\t\t\t}\n\t\t\t#gallery-3 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-3 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-3' class='gallery galleryid-3578 gallery-columns-3 gallery-size-400'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a data-rel=\"iLightbox[postimages]\" data-title=\"transkristalline-bruchanteile-und-aufgeweitete-korngrenzen\" data-caption=\"andere Stelle \u2013 transkristalline Bruchanteile und aufgeweitete Korngrenzen\" href='https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/transkristalline-bruchanteile-und-aufgeweitete-korngrenzen.jpg'><img decoding=\"async\" width=\"600\" height=\"449\" src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/transkristalline-bruchanteile-und-aufgeweitete-korngrenzen.jpg\" class=\"attachment-400 size-400 lazyload\" alt=\"\" aria-describedby=\"gallery-3-2748\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27600%27%20height%3D%27449%27%20viewBox%3D%270%200%20600%20449%27%3E%3Crect%20width%3D%27600%27%20height%3D%27449%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/transkristalline-bruchanteile-und-aufgeweitete-korngrenzen.jpg\" data-srcset=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/transkristalline-bruchanteile-und-aufgeweitete-korngrenzen-200x150.jpg 200w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/transkristalline-bruchanteile-und-aufgeweitete-korngrenzen-300x225.jpg 300w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/transkristalline-bruchanteile-und-aufgeweitete-korngrenzen-400x299.jpg 400w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/transkristalline-bruchanteile-und-aufgeweitete-korngrenzen.jpg 600w\" data-sizes=\"auto\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-3-2748'>\n\t\t\t\tandere Stelle \u2013 transkristalline Bruchanteile und aufgeweitete Korngrenzen\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a data-rel=\"iLightbox[postimages]\" data-title=\"korn-mit-transkristallinem-bruch-mit-mikrospaltlfaechen\" data-caption=\"Korn mit transkristallinem Bruch mit Mikrospaltfl\u00e4chen\" href='https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/korn-mit-transkristallinem-bruch-mit-mikrospaltlfaechen.jpg'><img decoding=\"async\" width=\"600\" height=\"450\" src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/korn-mit-transkristallinem-bruch-mit-mikrospaltlfaechen.jpg\" class=\"attachment-400 size-400 lazyload\" alt=\"\" aria-describedby=\"gallery-3-2749\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27600%27%20height%3D%27450%27%20viewBox%3D%270%200%20600%20450%27%3E%3Crect%20width%3D%27600%27%20height%3D%27450%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/korn-mit-transkristallinem-bruch-mit-mikrospaltlfaechen.jpg\" data-srcset=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/korn-mit-transkristallinem-bruch-mit-mikrospaltlfaechen-200x150.jpg 200w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/korn-mit-transkristallinem-bruch-mit-mikrospaltlfaechen-300x225.jpg 300w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/korn-mit-transkristallinem-bruch-mit-mikrospaltlfaechen-400x300.jpg 400w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/korn-mit-transkristallinem-bruch-mit-mikrospaltlfaechen.jpg 600w\" data-sizes=\"auto\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-3-2749'>\n\t\t\t\tKorn mit transkristallinem Bruch mit Mikrospaltfl\u00e4chen\n\t\t\t\t<\/dd><\/dl>\n\t\t\t<br style='clear: both' \/>\n\t\t<\/div>\n\n<p><strong>2.2. metallography<\/strong><\/p>\n<p>The cross-section of sample 3 n.i. O. confirms the course of the intergranular cracks determined during the REM examination. The partially rounded grain boundaries are also clearly visible.<\/p>\n\n\t\t<style type=\"text\/css\">\n\t\t\t#gallery-4 {\n\t\t\t\tmargin: auto;\n\t\t\t}\n\t\t\t#gallery-4 .gallery-item {\n\t\t\t\tfloat: left;\n\t\t\t\tmargin-top: 10px;\n\t\t\t\ttext-align: center;\n\t\t\t\twidth: 33%;\n\t\t\t}\n\t\t\t#gallery-4 img {\n\t\t\t\tborder: 2px solid #cfcfcf;\n\t\t\t}\n\t\t\t#gallery-4 .gallery-caption {\n\t\t\t\tmargin-left: 0;\n\t\t\t}\n\t\t\t\/* see gallery_shortcode() in wp-includes\/media.php *\/\n\t\t<\/style>\n\t\t<div id='gallery-4' class='gallery galleryid-3578 gallery-columns-3 gallery-size-400'><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a data-rel=\"iLightbox[postimages]\" data-title=\"rissbeginn\" data-caption=\"Rissbeginn\" href='https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbeginn.jpg'><img decoding=\"async\" width=\"600\" height=\"449\" src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbeginn.jpg\" class=\"attachment-400 size-400 lazyload\" alt=\"\" aria-describedby=\"gallery-4-2750\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27600%27%20height%3D%27449%27%20viewBox%3D%270%200%20600%20449%27%3E%3Crect%20width%3D%27600%27%20height%3D%27449%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbeginn.jpg\" data-srcset=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbeginn-200x150.jpg 200w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbeginn-300x225.jpg 300w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbeginn-400x299.jpg 400w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissbeginn.jpg 600w\" data-sizes=\"auto\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-4-2750'>\n\t\t\t\tRissbeginn\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a data-rel=\"iLightbox[postimages]\" data-title=\"mitte-riss\u2013rissflanken-korngrenzen-eingerundet\" data-caption=\"Mitte Riss \u2013 Rissflanken bzw. Korngrenzen z. T. eingerundet\" href='https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/mitte-riss\u2013rissflanken-korngrenzen-eingerundet.jpg'><img decoding=\"async\" width=\"600\" height=\"448\" src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/mitte-riss\u2013rissflanken-korngrenzen-eingerundet.jpg\" class=\"attachment-400 size-400 lazyload\" alt=\"\" aria-describedby=\"gallery-4-2751\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27600%27%20height%3D%27448%27%20viewBox%3D%270%200%20600%20448%27%3E%3Crect%20width%3D%27600%27%20height%3D%27448%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/mitte-riss\u2013rissflanken-korngrenzen-eingerundet.jpg\" data-srcset=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/mitte-riss\u2013rissflanken-korngrenzen-eingerundet-200x149.jpg 200w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/mitte-riss\u2013rissflanken-korngrenzen-eingerundet-300x224.jpg 300w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/mitte-riss\u2013rissflanken-korngrenzen-eingerundet-400x299.jpg 400w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/mitte-riss\u2013rissflanken-korngrenzen-eingerundet.jpg 600w\" data-sizes=\"auto\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-4-2751'>\n\t\t\t\tMitte Riss \u2013 Rissflanken bzw. Korngrenzen z. T. eingerundet\n\t\t\t\t<\/dd><\/dl><dl class='gallery-item'>\n\t\t\t<dt class='gallery-icon landscape'>\n\t\t\t\t<a data-rel=\"iLightbox[postimages]\" data-title=\"rissverlauf-rand\" data-caption=\"Rissverlauf Rand, Verg\u00fctungsgef\u00fcge, ge\u00e4tzt mit Nital\" href='https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissverlauf-rand.jpg'><img decoding=\"async\" width=\"600\" height=\"449\" src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissverlauf-rand.jpg\" class=\"attachment-400 size-400 lazyload\" alt=\"\" aria-describedby=\"gallery-4-2752\" srcset=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27600%27%20height%3D%27449%27%20viewBox%3D%270%200%20600%20449%27%3E%3Crect%20width%3D%27600%27%20height%3D%27449%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissverlauf-rand.jpg\" data-srcset=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissverlauf-rand-200x150.jpg 200w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissverlauf-rand-300x225.jpg 300w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissverlauf-rand-400x299.jpg 400w, https:\/\/tazgmbh.de\/wp-content\/uploads\/2019\/10\/rissverlauf-rand.jpg 600w\" data-sizes=\"auto\" \/><\/a>\n\t\t\t<\/dt>\n\t\t\t\t<dd class='wp-caption-text gallery-caption' id='gallery-4-2752'>\n\t\t\t\tRissverlauf Rand, Verg\u00fctungsgef\u00fcge, ge\u00e4tzt mit Nital\n\t\t\t\t<\/dd><\/dl><br style=\"clear: both\" \/>\n\t\t<\/div>\n\n<p>The structure in the crack area, tempered structure, does not differ from the surrounding structure.<\/p>\n<p><strong>Summary and assessment<\/strong><\/p>\n<p>Cracks in forged and hardened shafts were examined using SEM\/EDX and metallography.<\/p>\n<p>The crack surface shows an intergranular fracture whose grains z. T. have a &#8220;rounded&#8221; appearance. This structure does not indicate a typical hardening crack, but rather a hot crack, more precisely a so-called remelting crack, which can occur if the temperature is imprecisely controlled during hot forming.<\/p>\n<p>It is striking that the forced laboratory fracture that occurred when the crack opened also shows an intergranular fracture. This fracture with smooth grain boundaries with partially expanded grain boundaries and proportions of transcrystalline cleavage fracture with so-called micro-cleavage surfaces gives an indication of any hydrogen embrittlement that may be present.<\/p>\n<p>The metallographic examination shows no difference between the n.i. O. sample and the i. O.\u2014Sample. Both samples show a tempering structure. Both samples are fully hardened.<\/p>\n<p>Thomas Asam<br \/>\n(Managing Director)<\/p>\n<p>Eurasburg, 01.09.2014<\/p>\n<\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-builder-column-0{width:100% !important;margin-top : 0px;margin-bottom : 20px;}.fusion-builder-column-0 > .fusion-column-wrapper {padding-top : 0px !important;padding-right : 0px !important;margin-right : 1.92%;padding-bottom : 0px !important;padding-left : 0px !important;margin-left : 1.92%;}@media only screen and (max-width:1024px) {.fusion-body .fusion-builder-column-0{width:100% !important;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}@media only screen and (max-width:640px) {.fusion-body .fusion-builder-column-0{width:100% !important;}.fusion-builder-column-0 > .fusion-column-wrapper {margin-right : 1.92%;margin-left : 1.92%;}}<\/style><\/div><\/div><style type=\"text\/css\">.fusion-body .fusion-flex-container.fusion-builder-row-1{ padding-top : 0px;margin-top : 0px;padding-right : 0px;padding-bottom : 0px;margin-bottom : 0px;padding-left : 0px;}<\/style><\/div>\n","protected":false},"excerpt":{"rendered":"","protected":false},"author":1,"featured_media":2821,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[30],"tags":[],"class_list":["post-3578","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-complex-damage-investigation"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.3 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Waves with cracks - TAZ GmbH<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Waves with cracks - TAZ GmbH\" \/>\n<meta property=\"og:url\" content=\"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/\" \/>\n<meta property=\"og:site_name\" content=\"TAZ GmbH\" \/>\n<meta property=\"article:published_time\" content=\"2022-09-09T22:15:49+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/tazgmbh.de\/wp-content\/uploads\/2020\/01\/welle-mit-rissen.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"400\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"3 minutes\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\\\/\\\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/#article\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/#\\\/schema\\\/person\\\/f09645b5cfa073842ec06e8c2f211edc\"},\"headline\":\"Waves with cracks\",\"datePublished\":\"2022-09-09T22:15:49+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/\"},\"wordCount\":879,\"publisher\":{\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/#organization\"},\"image\":{\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/tazgmbh.de\\\/wp-content\\\/uploads\\\/2020\\\/01\\\/welle-mit-rissen.jpg\",\"articleSection\":[\"Complex damage investigation\"],\"inLanguage\":\"en-US\"},{\"@type\":\"WebPage\",\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/\",\"url\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/\",\"name\":\"Waves with cracks - TAZ GmbH\",\"isPartOf\":{\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/#primaryimage\"},\"image\":{\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/#primaryimage\"},\"thumbnailUrl\":\"https:\\\/\\\/tazgmbh.de\\\/wp-content\\\/uploads\\\/2020\\\/01\\\/welle-mit-rissen.jpg\",\"datePublished\":\"2022-09-09T22:15:49+00:00\",\"breadcrumb\":{\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/#primaryimage\",\"url\":\"https:\\\/\\\/tazgmbh.de\\\/wp-content\\\/uploads\\\/2020\\\/01\\\/welle-mit-rissen.jpg\",\"contentUrl\":\"https:\\\/\\\/tazgmbh.de\\\/wp-content\\\/uploads\\\/2020\\\/01\\\/welle-mit-rissen.jpg\",\"width\":600,\"height\":400},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/waves-with-cracks\\\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Startseite\",\"item\":\"https:\\\/\\\/tazgmbh.de\\\/en\\\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Waves with cracks\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/#website\",\"url\":\"https:\\\/\\\/tazgmbh.de\\\/\",\"name\":\"TAZ GmbH\",\"description\":\"\",\"publisher\":{\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/#organization\"},\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\\\/\\\/tazgmbh.de\\\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"},{\"@type\":\"Organization\",\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/#organization\",\"name\":\"TAZ GmbH\",\"url\":\"https:\\\/\\\/tazgmbh.de\\\/\",\"logo\":{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/#\\\/schema\\\/logo\\\/image\\\/\",\"url\":\"https:\\\/\\\/tazgmbh.de\\\/wp-content\\\/uploads\\\/2020\\\/01\\\/logo-leer.jpg\",\"contentUrl\":\"https:\\\/\\\/tazgmbh.de\\\/wp-content\\\/uploads\\\/2020\\\/01\\\/logo-leer.jpg\",\"width\":600,\"height\":400,\"caption\":\"TAZ GmbH\"},\"image\":{\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/#\\\/schema\\\/logo\\\/image\\\/\"}},{\"@type\":\"Person\",\"@id\":\"https:\\\/\\\/tazgmbh.de\\\/#\\\/schema\\\/person\\\/f09645b5cfa073842ec06e8c2f211edc\",\"name\":\"admin\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Waves with cracks - TAZ GmbH","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/","og_locale":"en_US","og_type":"article","og_title":"Waves with cracks - TAZ GmbH","og_url":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/","og_site_name":"TAZ GmbH","article_published_time":"2022-09-09T22:15:49+00:00","og_image":[{"width":600,"height":400,"url":"https:\/\/tazgmbh.de\/wp-content\/uploads\/2020\/01\/welle-mit-rissen.jpg","type":"image\/jpeg"}],"author":"admin","twitter_card":"summary_large_image","twitter_misc":{"Written by":"admin","Est. reading time":"3 minutes"},"schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"Article","@id":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/#article","isPartOf":{"@id":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/"},"author":{"name":"admin","@id":"https:\/\/tazgmbh.de\/#\/schema\/person\/f09645b5cfa073842ec06e8c2f211edc"},"headline":"Waves with cracks","datePublished":"2022-09-09T22:15:49+00:00","mainEntityOfPage":{"@id":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/"},"wordCount":879,"publisher":{"@id":"https:\/\/tazgmbh.de\/#organization"},"image":{"@id":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/#primaryimage"},"thumbnailUrl":"https:\/\/tazgmbh.de\/wp-content\/uploads\/2020\/01\/welle-mit-rissen.jpg","articleSection":["Complex damage investigation"],"inLanguage":"en-US"},{"@type":"WebPage","@id":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/","url":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/","name":"Waves with cracks - TAZ GmbH","isPartOf":{"@id":"https:\/\/tazgmbh.de\/#website"},"primaryImageOfPage":{"@id":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/#primaryimage"},"image":{"@id":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/#primaryimage"},"thumbnailUrl":"https:\/\/tazgmbh.de\/wp-content\/uploads\/2020\/01\/welle-mit-rissen.jpg","datePublished":"2022-09-09T22:15:49+00:00","breadcrumb":{"@id":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/tazgmbh.de\/en\/waves-with-cracks\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/#primaryimage","url":"https:\/\/tazgmbh.de\/wp-content\/uploads\/2020\/01\/welle-mit-rissen.jpg","contentUrl":"https:\/\/tazgmbh.de\/wp-content\/uploads\/2020\/01\/welle-mit-rissen.jpg","width":600,"height":400},{"@type":"BreadcrumbList","@id":"https:\/\/tazgmbh.de\/en\/waves-with-cracks\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Startseite","item":"https:\/\/tazgmbh.de\/en\/"},{"@type":"ListItem","position":2,"name":"Waves with cracks"}]},{"@type":"WebSite","@id":"https:\/\/tazgmbh.de\/#website","url":"https:\/\/tazgmbh.de\/","name":"TAZ GmbH","description":"","publisher":{"@id":"https:\/\/tazgmbh.de\/#organization"},"potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/tazgmbh.de\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"},{"@type":"Organization","@id":"https:\/\/tazgmbh.de\/#organization","name":"TAZ GmbH","url":"https:\/\/tazgmbh.de\/","logo":{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/tazgmbh.de\/#\/schema\/logo\/image\/","url":"https:\/\/tazgmbh.de\/wp-content\/uploads\/2020\/01\/logo-leer.jpg","contentUrl":"https:\/\/tazgmbh.de\/wp-content\/uploads\/2020\/01\/logo-leer.jpg","width":600,"height":400,"caption":"TAZ GmbH"},"image":{"@id":"https:\/\/tazgmbh.de\/#\/schema\/logo\/image\/"}},{"@type":"Person","@id":"https:\/\/tazgmbh.de\/#\/schema\/person\/f09645b5cfa073842ec06e8c2f211edc","name":"admin"}]}},"_links":{"self":[{"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/posts\/3578","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/comments?post=3578"}],"version-history":[{"count":2,"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/posts\/3578\/revisions"}],"predecessor-version":[{"id":3584,"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/posts\/3578\/revisions\/3584"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/media\/2821"}],"wp:attachment":[{"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/media?parent=3578"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/categories?post=3578"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tazgmbh.de\/en\/wp-json\/wp\/v2\/tags?post=3578"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}