Austenite morphology and resistance to hydrogen embrittlement in medium Mn transformation-induced plasticity steel

被引：39
|
作者：
Jeong, Inkyun [1 ]
Ryu, Kang Mook [1 ]
Lee, Dae Geon [1 ]
Jung, Yeonseung [2 ]
Lee, Kyooyoung [2 ]
Lee, Jae Sang [1 ]
Suh, Dong-Woo [1 ]
机构：
[1] POSTECH, Grad Inst Ferrous Technol, Pohang, South Korea
[2] POSCO, Tech Res Labs, Pohang, South Korea
来源：
SCRIPTA MATERIALIA | 2019年 / 169卷
关键词：
Austenite morphology; Hydrogen; Embrittlement; Transformation-induced plasticity; Steels; RETAINED AUSTENITE; TRIP; MECHANISM; STABILITY;
D O I：
10.1016/j.scriptamat.2019.05.011
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Influence of austenite morphology on the hydrogen embrittlement in medium Mn transformation-induced plasticity (TRIP) steel was investigated. With nearly the same volume fraction and mechanical stability, the lath-type austenite is found to have more beneficial effect in relieving the hydrogen susceptibility compared to the equiaxed one. Slower hydrogen uptake and diffusion are confirmed in the steel with the austenite of lath-type morphology, which is possibly led by more connections between austenite grains obstructing the migration of hydrogen. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：52 / 56
页数：5
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