期刊
MATERIALS TODAY COMMUNICATIONS
卷 33, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.mtcomm.2022.104430
关键词
Multicomponent solder; Tensile strength; SAC305; Thermal aging; Microstructure
资金
- Malaysia Collaborative Research in Engineering, Science Technology [P09C3-14]
- University of Malaya [RK007-2018]
This study investigates the effects of simultaneous additions of Bi, Sb and Ni to SAC 305 solder on the evolution of microstructure and mechanical properties of the solder under thermal aging. The results show that the multicomponent alloy has superior microstructural stability and improved mechanical strength at long aging time.
Reliability of lead-free solders, used in harsh conditions such as in automotive, is still a serious concern. Simultaneous additions of multiple alloying elements like Bismuth (Bi), Antimony (Sb), Nickel (Ni) etc. to conventional Sn-Ag-Cu (SAC) based solders have recently been investigated to improve their reliability. The additional elements can bring about the improvements through solid solution and precipitation strengthening. In this study, the effects of simultaneous additions of Bi, Sb and Ni to SAC 305 solder on the evolution of microstructure and mechanical properties of the solder under thermal aging at 125 degrees C for up to 1008 h are investigated. Superior microstructural stability and improved mechanical strength of the multicomponent alloy at long aging time and its fracture behavior are discussed.
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