Crack propagation analysis of hydrogen embrittlement based on peridynamics

被引：17

作者：

Ran, Xiu ^{[1
,2
]}

Qian, Songrong ^{[1
,2
]}

Zhou, Ji ^{[1
]}

Xu, Zhengyun ^{[1
]}

机构：

[1] Guizhou Univ, Sch Mech Engn, Guiyang 550025, Peoples R China

[2] Guizhou Univ, State Key Lab Publ Big Data, Guiyang 550025, Peoples R China

来源：

INTERNATIONAL JOURNAL OF HYDROGEN ENERGY | 2022年 / 47卷 / 14期

关键词：

Hydrogen embrittlement; Peridynamics; Crack propagation; Hydrogen adsorption-induced; decohesion; STRESS-CORROSION CRACKING; MECHANISM;

D O I：

10.1016/j.ijhydene.2021.11.173

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：

We introduced a coupled peridynamic hydrogen diffusion and fracture model to solve the hydrogen embrittlement fracture of low alloy steel AISI 4340. In this model, the influence of temperature on hydrogen diffusion coefficient is considered, and a new peridynamic constitutive analysis method is used to simulate the crack propagation of hydrogen embrittlement. We verified the model in 3D using the experimental test of the hydrogen embrittlement cracking process of AISI 4340 steel in 0.1 N H2SO4 solution from the literature. Considering different ambient temperatures, it is found that the crack propagation is highly similar to the experimental results. Based on the numerical analysis of peridynamics, the model can numerically simulate the hydrogen embrittlement fracture of AISI 4340 steel, and obtain a visual demonstration of the entire process of hydrogen atom diffusion and crack growth. (c) 2021 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

引用

页码：9045 / 9057

页数：13

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