Abstract
In this paper, a microstructure-dependent creep model is developed that accounts for the hierarchal microstructure at multiple length scales. The model considers three distinguishable phases in the solder alloy at two different length scales: at the larger scale Sn dendrites of micrometer size are embedded in a homogeneous eutectic region; at a much smaller length scale the eutectic region consists of submicron size Ag3Sn particles embedded in a homogeneous Sn matrix. The model predictions agree well with creep test data of lanthanum doped SnAg solders.
Original language | English |
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Pages (from-to) | 310041-310046 |
Number of pages | 6 |
Journal | Journal of Electronic Packaging, Transactions of the ASME |
Volume | 130 |
Issue number | 3 |
DOIs | |
State | Published - Sep 2008 |
Keywords
- Constitutive model
- Creep
- SnAg lead-free solder