TY - JOUR
T1 - Crystallography of Martensite in Friction-Stir-Welded 12Cr Heat-Resistant Steel
AU - Hua, Peng
AU - Mironov, Sergey
AU - Sato, Yutaka S.
AU - Kokawa, Hiroyuki
AU - Park, Seung Hwang C.
AU - Hirano, Satoshi
N1 - Funding Information:
This work was supported by the Global COE Program in Materials Integration International Center of Education and Research at Tohoku University and partially by the Anhui Provincial Natural Science Foundation (Grant No. 1808085ME150).
Publisher Copyright:
© 2019, The Minerals, Metals & Materials Society and ASM International.
PY - 2019/7/15
Y1 - 2019/7/15
N2 - In this work, electron backscatter diffraction (EBSD) was applied for examination of the crystallography of the martensitic structure produced during friction-stir welding (FSW) of 12Cr heat-resistant steel. The martensitic transformation was found to be governed by the Kurdjumov–Sachs (K-S) relation, viz. {111}γ || {110}α′ and 〈110〉γ || 〈111〉α′, was characterized by substantial variant selection and led to considerable orientation spread within the martensite variants. Due to the latter effect, the K-S model was found to be ineffective for the reconstruction of prior-austenite grain structure. Instead, the mixed orientation relation, viz. {111}γ || {110}α′, 〈110〉γ || 〈111〉α′, and 〈112〉γ || 〈110〉α′, was shown to be more suitable for this purpose.
AB - In this work, electron backscatter diffraction (EBSD) was applied for examination of the crystallography of the martensitic structure produced during friction-stir welding (FSW) of 12Cr heat-resistant steel. The martensitic transformation was found to be governed by the Kurdjumov–Sachs (K-S) relation, viz. {111}γ || {110}α′ and 〈110〉γ || 〈111〉α′, was characterized by substantial variant selection and led to considerable orientation spread within the martensite variants. Due to the latter effect, the K-S model was found to be ineffective for the reconstruction of prior-austenite grain structure. Instead, the mixed orientation relation, viz. {111}γ || {110}α′, 〈110〉γ || 〈111〉α′, and 〈112〉γ || 〈110〉α′, was shown to be more suitable for this purpose.
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U2 - 10.1007/s11661-019-05220-1
DO - 10.1007/s11661-019-05220-1
M3 - Article
AN - SCOPUS:85064670110
SN - 1073-5623
VL - 50
SP - 3158
EP - 3163
JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
IS - 7
ER -