Abnormal relationship between Ms temperature and prior austenite grain size in Al-alloyed steels

被引：16
作者：
Zhu, Kangying [1 ]
Magar, Coralie [1 ]
Huang, M. X. [2 ]
机构：
[1] R&D ArcelorMittal Maizieres, BP 30320, F-57283 Maizieres Les Metz, France
[2] Univ Hong Kong, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China
来源：
SCRIPTA MATERIALIA | 2017年 / 134卷
关键词：
Ms temperature; Prior austenite grain size; Austenitization temperature; Al-alloyed steel; grain boundary segregation; MARTENSITE-START TEMPERATURE; MECHANICAL-PROPERTIES; MN ALLOYS; TRANSFORMATION; KINETICS; STRENGTH; BAINITE;
D O I：
10.1016/j.scriptamat.2017.03.004
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
It has been generally accepted in the literature that the decrease in prior austenite grain size leads to a decrease in Ms temperature in steels. However, in the present study, it is found that Ms temperature increases with the decrease of prior austenite grain size in steels with an addition of Al content higher than 1 wt%. It is revealed that the Al segregation at prior austenite grain boundaries may be the origin of this abnormal phenomenon. (C) 2017 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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收藏
页码：11 / 14
页数：4
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