The heritage of the twin microstructure in the sigma phase formed from deformed austenite
作者:Zhou, QW (Zhou, Qingwen)[ 1 ] ; Liu, JW (Liu, Jiangwen)[ 1,2 ] ; Gao, Y (Gao, Yan)[ 1,2 ]
JOURNAL OF ALLOYS AND COMPOUNDS
卷: 849
文献号: 156424
DOI: 10.1016/j.jallcom.2020.156424
出版年: DEC 30 2020
文献类型:Article
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摘要
Deformation twinning is the main mechanism for the nanocrystallization of austenite and the sigma phase, which has been found to nucleate at deformation twin boundaries, especially at their intersections in over-deformed austenite stainless steel. In the present paper, deformation twin heritage is found in sigma nuclei in the early stage of sigma phase transformation, due to the continuous feature of twin boundaries. The sigma nuclei change their crystal orientation by following the symmetrical feature of deformation twin boundaries during growth. This unique nucleation and growth pattern of the sigma phase is in favour of decreasing the energy required for sigma transformation from deformed austenite. (C) 2020 Elsevier B.V. All rights reserved.
关键词
作者关键词:Austenitic stainless steel; Over-deformation; Twin heritage; Transmission electron microscopy (TEM)
KeyWords Plus:INTERGRANULAR CORROSION-RESISTANCE; STAINLESS-STEEL; BEHAVIOR; PRECIPITATION
作者信息
通讯作者地址:
South China University of Technology South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China.
通讯作者地址: Gao, Y (通讯作者)
显示更多South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China.
地址:
显示更多[ 1 ] South China Univ Technol, Sch Mat Sci & Engn, Guangzhou 510641, Guangdong, Peoples R China
[ 2 ] Guangdong Prov Key Lab Adv Energy Storage Mat, Guangzhou, Guangdong, Peoples R China
电子邮件地址:meygao@scut.edu.cn
基金资助致谢
基金资助机构显示详情授权号
National Natural Science Foundation of China (NSFC)
51471072
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出版商
ELSEVIER SCIENCE SA, PO BOX 564, 1001 LAUSANNE, SWITZERLAND
期刊信息
Impact Factor (影响因子): Journal Citation Reports
类别 / 分类
研究方向:Chemistry; Materials Science; Metallurgy & Metallurgical Engineering
Web of Science 类别:Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering