Crack propagation behavior of different zones in weldment under creep-fatigue loadings

被引：0

作者：

Zhou, Dewen ^{[1
,2
]}

Wang, Xiaowei ^{[1
,2
]}

Gao, Letian ^{[1
,2
]}

Li, Heng ^{[1
,2
]}

Liu, Jianxin ^{[3
]}

Kang, Zitong ^{[1
,2
]}

Zhang, Tianyu ^{[1
,2
]}

Zhang, Xiancheng ^{[2
,4
]}

Gong, Jianming ^{[1
,2
]}

Tu, Shantung ^{[2
,4
]}

机构：

[1] Nanjing Tech Univ, Sch Mech & Power Engn, Nanjing 211816, Peoples R China

[2] Nanjing Tech Univ, Reliabil Ctr Mfg Res Inst, Nanjing 211816, Peoples R China

[3] Univ Ghent, Fac Engn & Architecture, Dept Elect Energy Met Mech Construct & Syst, Soete Lab, B-9000 Ghent, Belgium

[4] East China Univ Sci & Technol, Key Lab Pressure Syst & Safety, Minist Educ, Shanghai 200237, Peoples R China

来源：

ENGINEERING FRACTURE MECHANICS | 2024年 / 310卷

基金：

中国国家自然科学基金;

关键词：

Crystal plasticity finite element; Crack propagation; eXtended Finite Element Method; P92 steel welded joint; LOW-CYCLE FATIGUE; IN-SITU SEM; CRYSTAL PLASTICITY; GROWTH BEHAVIOR; CONSTITUTIVE RELATIONS; LIFE PREDICTION; SINGLE-CRYSTAL; WELDED-JOINTS; PART; STEEL;

D O I：

10.1016/j.engfracmech.2024.110416

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

In this paper, crack propagation behaviors in a weldment are simulated under cyclic loadings using crystal plasticity finite element coupled with the XFEM. The result shows that the cracks in heat affected zone grow faster than that in the welded zone. Short crack propagation dominated by dislocation activity takes approximately 4 to 5 grains, followed by long crack propagation which is unrelated to dislocation activity and the growth direction kept an angle to the loading direction (45 degrees-51 degrees). Experimentally observed deflections within grains and at grain boundaries, retardation at grain boundaries are captured by the simulation.

引用

页数：21

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