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Grain Boundary Deformation at High Temperature Tensile Tests in ODS Ferritic Steel

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Title: Grain Boundary Deformation at High Temperature Tensile Tests in ODS Ferritic Steel
Authors: Sugino, Yoshito Browse this author
Ukai, Shigeharu Browse this author →KAKEN DB
Leng, Bin Browse this author
Tang, Qingxin Browse this author
Hayashi, Shigenari Browse this author →KAKEN DB
Kaito, Takeji Browse this author
Ohtsuka, Satoshi Browse this author
Keywords: ODS ferritic steel
tensile test
grain boundary sliding
electron backscattering diffraction
Issue Date: 15-Jun-2011
Publisher: Iron and Steel Institute of Japan
Journal Title: ISIJ International
Volume: 51
Issue: 6
Start Page: 982
End Page: 986
Publisher DOI: 10.2355/isijinternational.51.982
Abstract: The tensile test of the recrystallized ODS ferritic steels was performed in the loading direction for the longitudinal and 45° inclined with respect to the grains alignment. The testing temperature was 800°C and the strain rate was 10–4 s–1. A clear serration structure was observed at near the grain boundaries at the surface of 45° specimen ruptured. This is a clear evidence of the occurrence of the grain boundary sliding in 45° direction. For the total strain of 12% in 45° direction, grain boundary deformation induced by sliding was estimated about 9%, whereas the amounts of the transgranular strains was 2% measured by EBSD analysis. The grain-subdivision was also identified near grain boundaries by FIB analysis, which could be caused by a dynamic recrystallization during the localized grain boundary deformation.
Rights: 著作権は日本鉄鋼協会にある
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 鵜飼 重治

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