Deformation-induced nontetragonality of martensite in carbon steels

被引：8
|
作者：
Chen, Yulin [1 ]
Liu, Qian [1 ]
Xiao, Wenlong [1 ]
Ping, Dehai [2 ]
Wang, Yunzhi [3 ]
Zhao, Xinqing [1 ]
机构：
[1] Beihang Univ, Sch Mat Sci & Engn, Beijing 100191, Peoples R China
[2] Dalian Jiaotong Univ, Sch Mat Sci & Engn, Dalian 116028, Peoples R China
[3] Ohio State Univ, Dept Mat Sci & Engn, Columbus, OH 43210 USA
来源：
MATERIALS LETTERS | 2018年 / 227卷
基金：
中国国家自然科学基金;
关键词：
Crystal structure; Phase transformation; Martensite; Tetragonality; Order-disorder transition; Metals and alloys; LATTICE; TRANSFORMATION; AUSTENITE; MECHANISM; ATOMS;
D O I：
10.1016/j.matlet.2018.05.084
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
With supersaturated carbon atoms ordering in the preferential octahedral sites of alpha-Fe lattice, the martensite formed in medium and high carbon steels exhibit a unique structural feature, tetragonality. In this letter, we reported anomalous nontetragonality of martensite in carbon steels by deforming quenched martensite, indicating that the disordering of interstitial carbon atoms in alpha-Fe lattice occurs under mechanical deformation. This order-disorder transition of interstitial carbon atoms in carbon steels provides solid experimental evidences of the prediction based on microscopic elasticity theory. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：213 / 216
页数：4
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