Hierarchal modeling of creep behavior of SnAg solder alloys

Min Pei, Jianmin Qu

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

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 languageEnglish
Pages (from-to)310041-310046
Number of pages6
JournalJournal of Electronic Packaging, Transactions of the ASME
Volume130
Issue number3
DOIs
StatePublished - Sep 2008

Keywords

  • Constitutive model
  • Creep
  • SnAg lead-free solder

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