摘要
采用高能喷丸(HESP)对TA17钛合金和0Cr18Ni9Ti不锈钢棒材的连接面进行了表面自纳米化(SSNC)处理,在连接面获得了一定厚度的纳米晶组织层。将钛合金和不锈钢的纳米化处理连接面对接,在热模拟试验机上进行恒温恒压和脉冲加压扩散连接。测试接头拉伸强度,并对断口和接头显微组织进行分析。结果表明,采用脉冲加压扩散连接,接头界面处生成的金属间化合物层较薄,接头抗拉强度高达384.0MPa;断口呈脆性断裂特征。
Surface self-nanocrystallization （SSNC） by means of high energy shot peening（HESP） was applied to produce nanostructures on the bonding surface of TA17 titanium alloy and 0Cr18Ni9Ti stainless steel bars and nanocrystalline structure layers with certain thickness were formed on the bonding surface of samples. TA17 and 0Cr18Ni9Ti bars were bonded by constant temperature and pressure diffusion bonding （CTPDB） and impact pressure diffusion bonding （IPDB） respectively on Gleeble-1500D tester. Tensile strength was tested, and the joint fractures and microstructures were analyzed. The results show that thinner interrnetallic compound layer is formed on the interface of joints by IPDB which has a tensile strength of 384.0 MPa. Fracture of IPDB joints present brittle characteristic.
出处
《稀有金属材料与工程》
SCIE
EI
CAS
CSCD
北大核心
2010年第1期42-45,共4页
Rare Metal Materials and Engineering
基金
国家自然科学基金(50675234)
重庆大学研究生科技创新基金(200801A1B0100269)
关键词
表面自纳米化
恒温恒压
脉冲加压
扩散连接
surface self-nanocrystallization
constant temperature and pressure
impact pressure
diffusion bonding
