Abstract
This paper details the deformation mechanism and low-cycle fatigue life of eutectic solder alloys at high temperature (around 0.8 Tm). Grain boundary sliding generally nucleates a wedge-type cavity that reduces the low-cycle fatigue life of metals. In this study, grain boundary sliding has promoted intergranular failure contributing to the reduction in fatigue life of Sn-Ag-Cu alloy. However, grain boundary sliding has exerted no deleterious effects on fatigue resistance of eutectic Pb-Sn and Bi-Sn alloys. The phase boundary sliding with very fine microstructure induces exceptional ductility in these alloys leading to superior low-cycle fatigue endurance for theses eutectic Pb-Sn and Bi-Sn alloys.
Original language | English |
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Pages (from-to) | 413-419 |
Number of pages | 7 |
Journal | Fatigue and Fracture of Engineering Materials and Structures |
Volume | 30 |
Issue number | 5 |
DOIs | |
Publication status | Published - 2007 May |
Keywords
- Creep
- Grain boundary sliding
- Lead-free solder
- Low-cycle fatigue
- Miniature testing
- Sn-3.0Ag-0.5Cu
- Sn-37Pb
- Sn-57Bi
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering