Round robin crystal orientation measurement using EBSD for damage assessment

Crystal orientations of creep damaged Type 316 stainless steel were measured by 10 organizations using the same specimens, passed in a round robin, in order to investigate the scatter in material damage assessment using the electron backscatter diffraction (EBSD) technique. The measurements were per...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Masayuki KAMAYA, Keiji KUBUSHIRO, Yohei SAKAKIBARA, Seiichi SUZUKI, Hirobumi MORITA, Rika YODA, Daisuke KOBAYASHI, Kenta YAMAGIWA, Tomoya NISHIOKA, Yasuhiro YAMAZAKI, Yasuhiro KAMADA, Takeshi HANADA, Toshihiro OHTANI
Formato:	article
Lenguaje:	EN
Publicado:	The Japan Society of Mechanical Engineers 2016
Materias:	ebsd local misorientation intra-grain misorientation creep damage stainless steel crystal orientation Mechanical engineering and machinery TJ1-1570
Acceso en línea:	https://doaj.org/article/763a12eb96b64b4583ee9b6e85acfd6d
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:doaj.org-article:763a12eb96b64b4583ee9b6e85acfd6d
record_format	dspace
spelling	oai:doaj.org-article:763a12eb96b64b4583ee9b6e85acfd6d2021-11-26T06:51:31ZRound robin crystal orientation measurement using EBSD for damage assessment2187-974510.1299/mej.16-00077https://doaj.org/article/763a12eb96b64b4583ee9b6e85acfd6d2016-05-01T00:00:00Zhttps://www.jstage.jst.go.jp/article/mej/3/3/3_16-00077/_pdf/-char/enhttps://doaj.org/toc/2187-9745Crystal orientations of creep damaged Type 316 stainless steel were measured by 10 organizations using the same specimens, passed in a round robin, in order to investigate the scatter in material damage assessment using the electron backscatter diffraction (EBSD) technique. The measurements were performed according to the EBSD measurement guideline issued by the Society of Material Science, Japan. Two misorientation parameters, the local and intra-grain misorientations, were calculated using mapping data of measured crystal orientations. It was shown that the area averaged local and intra-grain misorientations correlated well with the degree of the inelastic strain caused by the creep damage. Although the area averaged local misorientation showed eminent scatter, the scatter in the area averaged intra-grain misorientation was relatively small. The scatter in the area averaged local misorientation was deduced to be brought about by the error in the crystal orientation measurements. Since the accuracy of the crystal orientation measurement depends on various factors and is difficult to control, the correlation between the degree of the creep damage and the local misorientations obtained by one SEM/EBSD system is difficult to apply to other SEM/EBSD systems. On the other hand, the area averaged intra-grain misorientation is not affected much by the error in the crystal orientation measurements and the values obtained by various organizations using different SEM/EBSD systems were almost the same. It was concluded that the area averaged intra-grain misorientation can be used for measurement of the creep damage (inelastic strain). The empirical relationship between the area averaged intra-grain misorientation and the degree of the creep damage can be shared regardless of the SEM/EBSD system used.Masayuki KAMAYAKeiji KUBUSHIROYohei SAKAKIBARASeiichi SUZUKIHirobumi MORITARika YODADaisuke KOBAYASHIKenta YAMAGIWATomoya NISHIOKAYasuhiro YAMAZAKIYasuhiro KAMADATakeshi HANADAToshihiro OHTANIThe Japan Society of Mechanical Engineersarticleebsdlocal misorientationintra-grain misorientationcreep damagestainless steelcrystal orientationMechanical engineering and machineryTJ1-1570ENMechanical Engineering Journal, Vol 3, Iss 3, Pp 16-00077-16-00077 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	ebsd local misorientation intra-grain misorientation creep damage stainless steel crystal orientation Mechanical engineering and machinery TJ1-1570
spellingShingle	ebsd local misorientation intra-grain misorientation creep damage stainless steel crystal orientation Mechanical engineering and machinery TJ1-1570 Masayuki KAMAYA Keiji KUBUSHIRO Yohei SAKAKIBARA Seiichi SUZUKI Hirobumi MORITA Rika YODA Daisuke KOBAYASHI Kenta YAMAGIWA Tomoya NISHIOKA Yasuhiro YAMAZAKI Yasuhiro KAMADA Takeshi HANADA Toshihiro OHTANI Round robin crystal orientation measurement using EBSD for damage assessment
description	Crystal orientations of creep damaged Type 316 stainless steel were measured by 10 organizations using the same specimens, passed in a round robin, in order to investigate the scatter in material damage assessment using the electron backscatter diffraction (EBSD) technique. The measurements were performed according to the EBSD measurement guideline issued by the Society of Material Science, Japan. Two misorientation parameters, the local and intra-grain misorientations, were calculated using mapping data of measured crystal orientations. It was shown that the area averaged local and intra-grain misorientations correlated well with the degree of the inelastic strain caused by the creep damage. Although the area averaged local misorientation showed eminent scatter, the scatter in the area averaged intra-grain misorientation was relatively small. The scatter in the area averaged local misorientation was deduced to be brought about by the error in the crystal orientation measurements. Since the accuracy of the crystal orientation measurement depends on various factors and is difficult to control, the correlation between the degree of the creep damage and the local misorientations obtained by one SEM/EBSD system is difficult to apply to other SEM/EBSD systems. On the other hand, the area averaged intra-grain misorientation is not affected much by the error in the crystal orientation measurements and the values obtained by various organizations using different SEM/EBSD systems were almost the same. It was concluded that the area averaged intra-grain misorientation can be used for measurement of the creep damage (inelastic strain). The empirical relationship between the area averaged intra-grain misorientation and the degree of the creep damage can be shared regardless of the SEM/EBSD system used.
format	article
author	Masayuki KAMAYA Keiji KUBUSHIRO Yohei SAKAKIBARA Seiichi SUZUKI Hirobumi MORITA Rika YODA Daisuke KOBAYASHI Kenta YAMAGIWA Tomoya NISHIOKA Yasuhiro YAMAZAKI Yasuhiro KAMADA Takeshi HANADA Toshihiro OHTANI
author_facet	Masayuki KAMAYA Keiji KUBUSHIRO Yohei SAKAKIBARA Seiichi SUZUKI Hirobumi MORITA Rika YODA Daisuke KOBAYASHI Kenta YAMAGIWA Tomoya NISHIOKA Yasuhiro YAMAZAKI Yasuhiro KAMADA Takeshi HANADA Toshihiro OHTANI
author_sort	Masayuki KAMAYA
title	Round robin crystal orientation measurement using EBSD for damage assessment
title_short	Round robin crystal orientation measurement using EBSD for damage assessment
title_full	Round robin crystal orientation measurement using EBSD for damage assessment
title_fullStr	Round robin crystal orientation measurement using EBSD for damage assessment
title_full_unstemmed	Round robin crystal orientation measurement using EBSD for damage assessment
title_sort	round robin crystal orientation measurement using ebsd for damage assessment
publisher	The Japan Society of Mechanical Engineers
publishDate	2016
url	https://doaj.org/article/763a12eb96b64b4583ee9b6e85acfd6d
work_keys_str_mv	AT masayukikamaya roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT keijikubushiro roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT yoheisakakibara roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT seiichisuzuki roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT hirobumimorita roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT rikayoda roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT daisukekobayashi roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT kentayamagiwa roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT tomoyanishioka roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT yasuhiroyamazaki roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT yasuhirokamada roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT takeshihanada roundrobincrystalorientationmeasurementusingebsdfordamageassessment AT toshihiroohtani roundrobincrystalorientationmeasurementusingebsdfordamageassessment
_version_	1718409726257004544

Round robin crystal orientation measurement using EBSD for damage assessment

Ejemplares similares