Hydrogen effects on cathodically charged twinning-induced plasticity steel

被引：42
|
作者：
Ronevich, J. A. [1 ]
Kim, S. K. [2 ]
Speer, J. G. [1 ]
Matlock, D. K. [1 ]
机构：
[1] Colorado Sch Mines, Adv Steel Proc & Prod Res Ctr, Dept Met & Mat Engn, Golden, CO 80401 USA
[2] POSCO Tech Res Labs, Pohang 545711, South Korea
来源：
SCRIPTA MATERIALIA | 2012年 / 66卷 / 12期
关键词：
Tension test; Austenitic steels; Hydrogen embrittlement; Fracture; Twinning induced plasticity steels (TWIP);
D O I：
10.1016/j.scriptamat.2011.12.012
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Cathodically charged twinning-induced plasticity (TWIP) steel was evaluated to determine the effects of brief hydrogen charging on the tensile properties. Ductile fracture mechanisms and bulk tensile properties were unaffected by hydrogen contents of up to 9.5 ppm. However, surface microcracks were observed to depths comparable to calculated hydrogen penetration depths, up to 6 mu m for samples charged for 6 h. These results highlighted the limited applicability of using pre-charged tensile samples to assess the potential for delayed cracking of austenitic TWIP steels. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：956 / 959
页数：4
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