By Topic

A comparison of the creep behaviour of joint-scale SAC105 and SAC305 solder samples under shear conditions

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Burke, C. ; Stokes Inst., Univ. of Limerick, Limerick, Ireland ; Punch, J.

This study compares the creep behavior of joint-scale Sn1.0Ag0.5Cu (SAC105) and Sn3.0Ag0.5Cu (SAC305) solder samples under shear loading. The basis of the comparison is experimentally derived Anand viscoplastic constitutive models for the alloys. A series of monotonic constant shear stress and constant shear strain rate tests was conducted at temperatures of 20°C, 50°C, 75°C and 100°C for SAC105 in order to provide data to extract the constitutive model parameters. The predictions of the Anand model are compared graphically with the experimental data for SAC105 in order to illustrate goodness-of-fit. The Anand parameters are shown to capture the creep performance of the SAC105 solder under shear loading very well, with the experimental data being tightly bound to the Anand predictions. For comparison, model parameters for SAC305 are taken from previously published work at the authors' institution. In terms of practical usage, SAC105 is noted to be preferable for applications which may experience high strain rate stimuli (portable electronic devices) as the alloy undergoes plastic flow at lower stress levels than SAC305, minimizing the risk of interfacial failures. Conversely, SAC305 is superior for applications which feature thermo-mechanical fatigue (desktop computers, for example, or servers) as it accumulates less strain than SAC105.

Published in:

Thermal, Mechanical and Multi-Physics Simulation and Experiments in Microelectronics and Microsystems (EuroSimE), 2012 13th International Conference on

Date of Conference:

16-18 April 2012