MODELING OF HYDROGEN EMBRITTLEMENT BY A DUCTILE-BRITTLE DAMAGE MODEL

被引：0
|
作者：
Chen, Qianqiang [1 ]
Moumni, Ziad [1 ]
Angles, Jean [2 ,3 ]
Rouby, Corinne [1 ]
机构：
[1] ENSTA ParisTech UME, Unite Mecan, Chemin Huniere, F-91761 Palaiseau, France
[2] EDF R&D MRI, F-78401 Chatou, France
[3] IMSIA EDF CNRS CEA ENSTA UMR 9219, F-92141 Clamart, France
来源：
ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B | 2015年
关键词：
ENHANCED LOCALIZED PLASTICITY; FRACTURE; MECHANISMS; CRACK;
D O I：
暂无
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Hydrogen embrittlement (HE) in a martensitic steel has been investigated by tensile tests. It is shown that increasing hydrogen amount results in a transition of void coalescence cracking to a mixture of intergranular and quasi-cleavage cracking. In order to reveal the mechanisms of HE, a non-local ductile-brittle damage-model has been proposed to model these tests. Modeling results show that HE is caused by a combined effect of HEDE, HELP and AIDS mechanisms.
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页数：8
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