Stress-controlled hydrogen embrittlement failure in U-bend high-strength steel

被引：5

作者：

Shibayama, Yuki ^{[1
,2
,3
]}

Hojo, Tomohiko ^{[2
,4
]}

Koyama, Motomichi ^{[2
]}

Akiyama, Eiji ^{[2
]}

机构：

[1] Japan Atom Energy Agcy, Mat Sci Res Ctr, 2-4 Shirakata,Tokai Mura, Naka, Ibaraki 3191195, Japan

[2] Tohoku Univ, Inst Mat Res, 2-1-1 Katahira,Aoba Ku, Sendai, Miyagi 9808577, Japan

[3] Tohoku Univ, Grad Sch Engn, 6-6-01-2 Aramaki Aza Aoba Ku, Sendai, Miyagi 9808570, Japan

[4] Tohoku Gakuin Univ, Dept Mech Engn & Intelligent Syst, 3-1 Shimizukoji,Wakabayashi Ku, Sendai, Miyagi 9848588, Japan

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2024年 / 88卷

关键词：

Hydrogen embrittlement; Steel; Plastic deformation; Fractography; Finite element analysis; DELAYED FRACTURE; STRAIN; BEHAVIOR; PLASTICITY;

D O I：

10.1016/j.ijhydene.2024.09.123

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of plastic deformation on the hydrogen embrittlement behavior of high-strength martensitic steels was investigated using a U-bend test. The hydrogen embrittlement susceptibility appeared to be enhanced with increasing plastic strain. Based on fractographic and stress-strain analyses, the maximum principal stress dominated the hydrogen embrittlement fracture. Although an apparent enhancement with increasing plastic deformation was observed, the origin of this enhancement was increased residual stress arising from the evolution of graded plastic strain during U-bending. We conclude that residual stress, rather than plastic strain induced by plastic deformation strongly affects hydrogen embrittlement susceptibility in deformed high-strength steel components.

引用

页码：1010 / 1016

页数：7

共 36 条

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