摘要
利用纳米石墨对Sn-Bi钎料合金进行改性,通过微型拉伸试验机测试各种复合钎料接头力学性能,通过扫描电镜观察了接头的显微组织和断口形貌。结果表明,纳米石墨的添加能够细化钎料的组织,降低接头的抗拉强度,增大接头的延伸长度;当石墨含量为0.07 wt%时,接头的综合力学性能良好。
Sn-Bi solder alloy was modified by nano-graphite. The mechanical properties of the composite solder alloy joints were investigated by micro mechanical tester. The microstructure and fracture were studied by SEM. The results show that the microstructure of the solder alloy is refined gradually with the content ofnano graphite increasing. The ultimate tensile strength of the welded joint decreases with the addition ofnano graphite. The elongation of the welded joint improves with the addition ofnano-graphite. The mechanical property of the solder joint is well when the fraction ofnano graphite is 0.07 wt%.
出处
《热加工工艺》
CSCD
北大核心
2014年第15期205-207,共3页
Hot Working Technology
关键词
纳米石墨
复合钎料
组织
力学性能
nano graphite
composite solder
microstructure
mechanical property
