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Acta Metall Sin  2009, Vol. 45 Issue (8): 912-918    DOI:
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MODELING OF Ag3Sn COARSENING AND ITS EFFECT ON CREEP IN Sn-Ag-Cu SOLDER
WANG Xiaojing1; ZHU Qingsheng 1; WANG Zhongguang1; SHANG Jianku1;2
1. Institute of Metal Research; Chinese Academy of Sciences; Shenyang 110016
2. Department of Materials Science and Engineering; University of Illinois at Urbana--Champaign; Urbana; IL61801; USA
Cite this article: 

WANG Xiaojing ZHU Qingsheng WANG Zhongguang SHANG Jianku. MODELING OF Ag3Sn COARSENING AND ITS EFFECT ON CREEP IN Sn-Ag-Cu SOLDER. Acta Metall Sin, 2009, 45(8): 912-918.

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Abstract  

Coarsening of the microstructure in Sn–Ag–Cu (SAC) solder joints under current stressing was bserved experimentally and modeled by a disocation–creep model which incorporates te carsening f second pase particles in lead–free solder aoys. Both the effects of electric current and strain–enhanced coarsening were conidered in thimodel. The straining effect took into account of both the inelastic–strain hstory and hydrostatic constraint. The model describes well the evolution of thutectic microstructure and the predictions of the model agree reasonably well with experimentally observed trends.

Key words:  Pb–free solder      article coarsening      electric current     
Received:  27 February 2009     
ZTFLH: 

TB302.3

 
  TB303

 
Fund: 

Supported by National Basic Research Program of China (No.2004CB619306)

URL: 

https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2009/V45/I8/912

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