摘要
采用高能喷丸对0Cr18Ni9Ti不锈钢和TA17近α钛合金棒材端面进行了表面自纳米化处理,在处理表面以下一定厚度内形成了纳米晶组织。利用脉冲加压扩散连接在825℃下对不锈钢和钛合金进行时间为180 s的扩散连接,得到了抗拉强度为221.6 MPa的扩散连接接头,利用能谱仪(EDS)测试出接头界面两侧一定范围内不同原子的扩散浓度,计算出了Fe原子在TA17近α钛合金扩散层中的扩散系数。结果表明,钛合金与不锈钢经表面自纳米化处理后,在短时间的扩散连接过程中原子扩散系数有所提高。
The surface self-nanocrystallinzation was applied to ends of 0Cr18Ni9Ti stainless steel and TA17 near α titanium alloy bars by means of high energy shot peening(HESP),nanostructured surface layers on the ends of samples were obtained.Pulse-pressuring diffusion bonding(PPDB) of 0Cr18Ni9Ti stainless steel and TA17 titanium alloy with nanostructured layers was carried out at 825 ℃ within 180 s.Tighten diffusion bonding joint of 0Cr18Ni9Ti and TA17 which tensile strength is 221.6 MPa were formed.And the atomic ...
出处
《焊接学报》
EI
CAS
CSCD
北大核心
2008年第5期25-29,114,共6页
Transactions of The China Welding Institution
基金
国家自然科学基金资助项目(50675234)
重庆大学研究生科技创新基金资助项目(200801A1B0100269)
关键词
表面自纳米化
脉冲加压
扩散连接
扩散系数
surface self-nanocrystallinzation
pulse-pressuring
diffusion bonding
diffusion coefficient
