Multiaxial Cycle Deformation and Low-Cycle Fatigue Behavior of Mild Carbon Steel and Related Welded-Metal Specimen

被引：5

作者：

Qu, Weilian ^{[1
]}

Zhao, Ernian ^{[1
]}

Zhou, Qiang ^{[1
]}

机构：

[1] Wuhan Univ Technol, Hubei Key Lab Roadway Bridge & Struct Engn, Wuhan 430070, Hubei, Peoples R China

来源：

ADVANCES IN MATERIALS SCIENCE AND ENGINEERING | 2017年 / 2017卷

基金：

中国国家自然科学基金;

关键词：

LIFE PREDICTION;

D O I：

10.1155/2017/8987376

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thelow-cycle fatigue experiments of mild carbon Q235B steel and its related welded-metal specimens are performed under uniaxial, in-phase, and 90 degrees out-of-phase loading conditions. Significant additional cyclic hardening for 90 degrees out-of-phase loading conditions is observed for both base metal and its related weldment. Besides, welding process produces extra additional hardening under the same loading conditions compared with the base metal. Multiaxial low-cycle fatigue strength under 90 degrees out-of-phase loading conditions is significantly reduced for both base-metal and welded-metal specimens. The weldment has lower fatigue life than the base metal under the given loading conditions, and the fatigue life reduction of weldment increases with the increasing strain amplitude. The KBM, FS, and MKBM critical plane parameters are evaluated for the fatigue data obtained. The FS and MKBM parameters are found to show better correlation with fatigue lives for both base-metal and welded-metal specimens.

引用

页数：12

共 26 条

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