扩散焊连接Zr-Ti-Ni-Cu-Be块体非晶合金  

Diffusion bonding of Zr-Ti-Ni-Cu-Be bulk metallic glasses

作　　者：沈博智[1] 陆琪[1] 王剑[1] 张英明[1] 吴超辉[1] 袁子洲[1] 

机构地区：[1]兰州理工大学有色金属合金及加工教育部重点实验室,甘肃兰州730050

出　　处：《金属热处理》2011年第12期86-91,共6页Heat Treatment of Metals

基　　金：国家自然科学基金(51061008)

摘　　要：采用超塑性扩散焊方法,对2 mm厚的锆基大块非晶合金Zr44Ti11Ni10Cu10Be25(vit1b)进行了焊接试验,获得了无界面缺陷的焊接接头,并且试样没有晶化。研究了非晶合金的扩散焊接工艺,根据试验结果提出了该合金优化的焊接工艺参数,探讨了非晶合金的扩散连接机理。研究发现,连接过程中,非晶合金发生了结构驰豫;接头质量与试样变形率的关系较为密切,只有当变形率达到一定值时才可以形成焊接接头。The thick of 2 mm Zr44Ti11Ni10Cu10Be25（vit1b）bulk metallic glass（BMG）were successfully joined by superplastic diffusion bonging（DB）,producing defect-free and no crystallization joints.The weld parameters were investigated,and according to the welding results,the optimized welding parameters were proposed.Besides,the mechanism of superplastic diffusion bonding for amorphous alloys was discussed.The results indicated that the structural relaxation was caused by superplastic diffusion bonding.Furthermore,the joint quality has a closer relationship with the sample deformation ratio,and the welded joints can be formed when the deformation ratio reaches to a certain value.

关 键 词：锆基块体非晶合金 超塑性 扩散焊连接 

分 类 号：TG457.19[金属学及工艺—焊接]