文献类型：期刊文献

英文题名：Formation mechanism of faulted bands and its effect on ?'-martensitic transformation

作者：Xi, Xiaohui[1];Dong, Guangqi[2];Wang, Lingyu[2];Hu, Jun[2];Shen, Chunguang[3];Wang, Jinliang[1];Xu, Wei[2]

机构：[1]Guangdong Ocean Univ, Sch Mech Engn, Zhanjiang 524000, Peoples R China;[2]Northeastern Univ, State Key Lab Rolling & Automation, Shenyang 110819, Peoples R China;[3]Hebei Univ Technol, Sch Mat Sci & Engn, Tianjin 300130, Peoples R China

年份：2022

卷号：224

外文期刊名：MATERIALS & DESIGN

收录：SCI-EXPANDED(收录号：WOS:000882331300003)、、EI(收录号：20224413052676)、Scopus(收录号：2-s2.0-85140985498)、WOS

基金：JLW and JH would like to acknowledge the support of National Natural Science Foundation of China (Grant No. 52101133 and No. 52071066) . XH X (Xiaohui Xi) would like to acknowledge the sup-port of Guangdong Basic and Applied Basic Research Foundation (Grant No: 2021A1515110581) .

语种：英文

外文关键词：Faulted band; Martensitic transformation; Crystallography; Formation mechanism

外文摘要：Understanding the martensitic transformation mechanism is of critical importance to control martensitic transformations and hence retained austenite. Linear defects reported in a previous study can provide nucleation sites for martensitic transformation, but their nature, formation mechanism and effect on martensitic transformation were not revealed. In this study, detailed evidence was provided that linear defects were formed by the motion of Shockley partial dislocation on a close-packed plane and usually could be in the form of faulted austenite, twins and e-martensite, defined as faulted bands. Faulted bands were formed prior to martensitic transformation at a starting transition temperature higher than Ms. They can provide nucleation sites for a'-martensitic transformation but can act as an effective barrier to limit the growth of a'-martensite laths. In addition, the same plane was found between the formation plane of the faulted band and the habit plane of a'-martensite, which indicates that the variant types of a'-martensite were decided by the variant types of faulted bands.(c) 2022 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).