Paper Title:
Torsional Fatigue of 63Sn-37Pb and Sn-0.7Cu Solders
  Abstract

A series of torsional fatigue tests were conducted on 63Sn-37Pb and Sn-0.7Cu solders. A continuous load drop was observed during the test. It was found that the load drop percentage had little effect on the elastic strain-life curve but strong effect on the plastic strain-life curve. The fatigue strength coefficient, fatigue strength exponent and fatigue ductility exponent had no great changes with the load drop. However, fatigue ductility coefficient showed a great difference and was linearly varying with load drop. A fatigue criterion of Coffin-Manson type was proposed in relation to load drop. The descending curve of the stress range with cycle was observed to consist of transient, steady state and tertiary regions. The percentage of load drop corresponding to the turning point from the steady state to the tertiary region was about 25% for all strain ranges of 63Sn-37Pb, and 30% for all strain ranges of Sn-0.7Cu. The torsional fatigue lives were correlated with von Mises equivalent strain amplitudes well. The fatigue behavior of Sn-0.7Cu is better than that of 63Sn-37Pb.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
2908-2911
DOI
10.4028/www.scientific.net/KEM.353-358.2908
Citation
N. Bai, X. Chen, X. Li, "Torsional Fatigue of 63Sn-37Pb and Sn-0.7Cu Solders", Key Engineering Materials, Vols. 353-358, pp. 2908-2911, 2007
Online since
September 2007
Authors
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Rimma Lapovok
Abstract:Equal Channel Angular Extrusion (ECAE) has become a very popular tool for studying the evolution of microstructure and properties under...
37
Authors: Lin Zhu Sun, Tie Cheng Wang, Fang Yang
Abstract:In order to determine the strength and deformation characteristics of confined concrete under axial compression of cruciform columns, the...
1366
Authors: Xi Guang Cui, Hai Dong Xu
Chapter 1: Structural Engineering
Abstract:Considering the strain rate then puts forward the modified uniaxial dynamic constitutive model related to strain rate in concrete-filled...
220
Authors: Dong Wang, Yong Jun Liu, Zhu Yan Li
Chapter 1: High Strength High Performance Materials and New Structural System
Abstract:In order to investigate the seismic behavior of the new circular hybrid Steel–Concrete– CFRP–Concrete column (simply called SCCC column), low...
353
Authors: Ming Xu, Yong Qin Yao, Liang Chen, Zhong Fan Chen
Chapter 1: Civil Engineering
Abstract:CTSRC (cold-formed thin-walled steel reinforced concrete) shear walls system studied herein is made up of cold-formed steel and concrete....
708