TY - JOUR
T1 - Annealing behavior in a high-pressure torsion-processed Fe–9Cr steel
AU - Duan, Jiaqi
AU - Wen, Haiming
AU - Zhou, Caizhi
AU - He, Xiaoqing
AU - Islamgaliev, Rinat
AU - Valiev, Ruslan
N1 - Funding Information:
This research is financially supported by US Department of Energy, Office of Nuclear Energy, through the NEET-NSUF (Nuclear Energy Enabling Technology-Nuclear Science User Facility) program (Award Number DE-NE0008524). R. Islamgaliev is grateful to the RSF Project No 19-19-00496. R. Valiev gratefully acknowledges the financial support from Saint Petersburg State University in the framework of Call 3 Project (ID 26130576). The electron microscopy was supported partially by the University of Missouri Electron Microscopy Core “Excellence in Electron Microscopy” award and partially by the Materials Research Center at Missouri University of Science and Technology.
Publisher Copyright:
© 2020, Springer Science+Business Media, LLC, part of Springer Nature.
Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2020/6/1
Y1 - 2020/6/1
N2 - A Fe–9Cr steel containing second-phase particles was processed by ten rotations of high-pressure torsion (HPT) to produce a microstructure consisting of pancake-shaped nanoscaled grains with dominantly high-angle boundaries. Annealing was carried out on the HPT-processed Fe–9Cr steel from 500 to 700 °C up to 48 h. During the annealing, grains grew in a continuous manner. During high-temperature annealing (above 600 °C), a higher fraction of low-angle boundaries was observed when texture J became the dominant texture component. The annealing behavior of the HPT-processed Fe–9Cr steel was compared to that of the equal-channel angular pressing (ECAP)-processed Fe–9Cr steel. It was found ECAP Fe–9Cr showed a different grain growth mode, i.e., discontinuous growth, and a higher degree of thermal stability. Our studies provide insights into how the annealing behavior is affected by the microstructure and texture evolution.
AB - A Fe–9Cr steel containing second-phase particles was processed by ten rotations of high-pressure torsion (HPT) to produce a microstructure consisting of pancake-shaped nanoscaled grains with dominantly high-angle boundaries. Annealing was carried out on the HPT-processed Fe–9Cr steel from 500 to 700 °C up to 48 h. During the annealing, grains grew in a continuous manner. During high-temperature annealing (above 600 °C), a higher fraction of low-angle boundaries was observed when texture J became the dominant texture component. The annealing behavior of the HPT-processed Fe–9Cr steel was compared to that of the equal-channel angular pressing (ECAP)-processed Fe–9Cr steel. It was found ECAP Fe–9Cr showed a different grain growth mode, i.e., discontinuous growth, and a higher degree of thermal stability. Our studies provide insights into how the annealing behavior is affected by the microstructure and texture evolution.
UR - http://www.scopus.com/inward/record.url?scp=85082932982&partnerID=8YFLogxK
U2 - 10.1007/s10853-020-04560-3
DO - 10.1007/s10853-020-04560-3
M3 - Article
AN - SCOPUS:85082932982
VL - 55
SP - 7958
EP - 7968
JO - Journal of Materials Science
JF - Journal of Materials Science
SN - 0022-2461
IS - 18
ER -