Fatigue fracture properties of magnetic pulse welded dissimilar Al-Fe lap joints

被引：42

作者：

Geng, Huihui ^{[1
]}

Sun, Liqiang ^{[2
]}

Li, Guangyao ^{[1
]}

Cui, Junjia ^{[1
]}

Huang, Liang ^{[3
]}

Xu, Zhidan ^{[4
]}

机构：

[1] Hunan Univ, State Key Lab Adv Design & Mfg Vehicle Body, Changsha 410082, Hunan, Peoples R China

[2] Capital Aerosp Machinery Co, Beijing 100076, Peoples R China

[3] Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Hubei, Peoples R China

[4] Saic GM Wuling Automobile Co Ltd, Liuzhou 545007, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2019年 / 121卷

基金：

中国国家自然科学基金;

关键词：

Magnetic pulse welding; Dissimilar materials; Fatigue behavior; Weibull distribution; LIFE ASSESSMENT; COOLING RATES; ALUMINUM; ALLOY; MICROSTRUCTURE; STRENGTH; BEHAVIOR;

D O I：

10.1016/j.ijfatigue.2018.12.027

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In this study, AA5052 aluminum alloy was welded to high strength low alloy steel HC420LA by magnetic pulse welding. The joint showed higher strength than the base metal and the shear strength exceeded 100 MPa. The weld area increase 36% when the discharge energy rose from 25 kJ to 40 kJ. The weld usually showed better fatigue resistance than the base metal under low stress amplitude (S-a <= 20 MPa), while interfacial failure would occur under high stress amplitude (S-a >= 26.7 MPa). Meanwhile, brittle fracture and ductile fracture were coexisted in the interfacial fracture surface.

引用

页码：146 / 154

页数：9

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