摘要
研究了P元素对Al-Si-Zn钎料的铺展性能、显微组织以及3003铝合金钎缝力学性能的影响.结果表明,在Al-Si-Zn钎料中添加P元素,能够改善钎料的铺展性能;P元素的加入不仅能有效细化钎料组织中粗大的块状初晶硅,也能使长针状的共晶硅"钝化"成短杆状.经拉伸试验发现,搭接和对接接头的断裂位置分别在母材和焊缝上;对于对接接头来说,钎焊接头的抗拉强度随Al-Si-Zn钎料中P元素含量的增加呈现先增大后减小的趋势,当P元素含量为0.06%(质量分数)时,钎料的综合性能最好.
The effect of P on the spreadability,microstructure of Al-Si-Zn filler metal and the mechanical properties of brazed joints were studied.Results show that the spreadability of the Al-Si-Zn filler metal was improved by the addition of P,and furthermore,both the plate shape primary silicon and needle shape eutectic silicon of the filler metal were refined effectively.Tensile tests indicate that the fracture position of lap joints locates at the base metal and butt joints locates at brazing seam respectively,and the tensile strength of the butt joint brazed with Al-Si-Zn filler metal increased firstly,and then decreased with the increasing of P addition.When the content of P was about 0.06%,the comprehensive properties of the Al-Si-Zn filler metal were the best.
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2013年第5期103-107,118,共5页
Transactions of The China Welding Institution
基金
科技部科技人员服务企业行动项目(2009GJC20040)
关键词
P元素
铝硅锌钎料
铺展性能
显微组织
力学性能
P element
Al-Si-Zn filler metal
spreadability
microstructure
mechanical properties
