摘要
应用扩散连接方法进行了 Al- Cu双金属复合结构的试验研究 ,比较了不同的焊接工艺、材料组合以及母材状态情况下 Al合金与 Cu的连接性 ,观察了接头区域的微观组织结构。研究表明 ,固相扩散连接是一种适用于异种材料连接的有效方法 ,通过在连接区域形成 Al- Cu金属间化合物 ,达到 Al和 Cu的有效连接。材料组合、母材原始状态以及连接工艺参数对 Al合金与 Cu的扩散连接存在着明显的影响。表面镀 Ni工艺不但能够有效阻止 Al和 Cu之间形成脆性相 ,而且 Al和 Ni之间形成了良好的扩散连接 ,改善了接头性能。
The experimental study on diffusion bonding of aluminium-copper bimetal composite structure was conducted, and the influence of different welding process, materials combinations, and base metal status on weldability of aluminium alloy and copper was discussed, the joint microstructure was observed. The results show that the solid-state diffusion bonding is suitable for dissimilar materials bonding. The Al-Cu intermetalic compound is formed in the joint zone, so the effective bond can be obtained. The factors such as material combinations, base metal status, and bonding parameters are all influential on diffusion bonding of aluminium alloy and copper. Ni coating on the copper surface can prevent the Al-Cu joint from formation of brittle phases, and because of interaction and inter-diffusion between Al and Ni elements, the joint property is improved.
出处
《材料工程》
EI
CAS
CSCD
北大核心
2003年第1期34-37,共4页
Journal of Materials Engineering
