Torsional fatigue with axial constant stress for Sn-3Ag-0.5Cu lead-free solder

被引：11
|
作者：
Liang, Ting [1 ]
Liang, Yongfeng [1 ]
Fang, Jiaye [1 ]
Chen, Gang [1 ]
Chen, Xu [1 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin 300072, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2014年 / 67卷
基金：
中国国家自然科学基金;
关键词：
Multiaxial; Ratcheting-fatigue; Constitutive model; Fatigue life prediction; Sn-3Ag-0.5Cu; KINEMATIC HARDENING RULES; CONSTITUTIVE MODEL; RATCHETING DEFORMATION; DYNAMIC RECOVERY; STAINLESS-STEEL; CRITICAL STATE; BEHAVIOR; ALLOY; JOINTS; LIFE;
D O I：
10.1016/j.ijfatigue.2014.02.008
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A series of multiaxial ratcheting-fatigue interaction tests have been carried out on Sn-3Ag-0.5Cu lead-free solder specimens. All tests were conducted under cyclic shear strain with the constant axial stress at the room temperature with the shear strain rate of 5 x 10(-3) s(-1). It was found that the ratcheting strain increased with increasing axial stress and shear strain amplitude while the fatigue life decreased at the same time. The ratcheting strain rate was linear with axial stress in double logarithmic coordinate. The Ohno-Wang II constitutive model was employed to simulate the stress-strain responses. Several fatigue life prediction models were applied to predict the multiaxial ratcheting-fatigue life of the Sn-3Ag-0.5Cu lead-free solder. The Gao-Chen model which adopted the maximum shear strain and the ratcheting strain rate as the damage parameter predicted the multiaxial ratcheting fatigue life well. (C) 2014 Elsevier Ltd. All rights reserved.
引用
收藏
页码：203 / 211
页数：9
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