摘要
采用成分微调和熔体温度过热处理手段研究了二者对金锡共晶合金凝固组织和加工性能的影响。研究表明:通过成分微调并结合适当熔体温度处理,可以消除合金凝固组织中的ζ'-Au5Sn初生相。在一定的过热温度范围内,适当提高熔体处理温度有利于共晶层片团的细化,获得了一种细小全层片结构(ζ'-Au5Sn+δ-AuSn)的共晶凝固组织,共晶层片间距约为0.07μm。在成分微调后并结合适宜的熔体温度处理,本工作得到的最佳共晶层片团平均尺寸约为4μm。可以预期这种细小全层片结构的金锡共晶合金凝固组织具有优异的加工性能。
The effects of composition adjustment and melt temperature overheating treatment on the solidification microstructure and workability of Au-Sn eutectic alloy were investigated. The results showed that combining the composition adjustment with an appropriate melt temperature treatment could remove the primary phaseζ′-AusSn in the solidification microstructure of Au-Sn alloy. By increasing the meh treatment temperature in the range of the definite overheating temperature, a kind of fine full lamellar eutectic （ζ′-Au5 Sn ＋ δ- AuSn） solidification microstructure was obtained, in which the eutectic lamellar spacing was about 0.07 μm. The optimal average size of entectic lamellar colony obtained by combining the composition adjustment with an appropriate melt temperature treatment was about 4 μm. It could be expected that the fine full lamellar eutectic solidification mierostructure of Au-Sn alloy possessed excellent workability.
出处
《稀有金属》
EI
CAS
CSCD
北大核心
2013年第1期44-48,共5页
Chinese Journal of Rare Metals
基金
国家自然科学基金资助项目(50964014
51161024)
关键词
金锡共晶合金
成分微调
熔体温度处理
凝固组织
Au-Sn eutectic alloy
composition adjustment
melt temperature treatment
solidification microstructure
