Zr对Ti_3Al基金属间化合物TLP扩散焊接头组织性能的影响  

Effect of Zr on Microstructure and Properties of Ti_3Al-Based Alloy TLP/DB Joints

作　　者：宁立芹[1] 梁德彬[1] 李海刚[1] 毛建英[1] 

机构地区：[1]航天材料及工艺研究所,北京100076

出　　处：《宇航材料工艺》2008年第2期72-75,共4页Aerospace Materials & Technology

摘　　要：采用TiZrNiCu非晶态箔状钎料过渡液相(TLP)扩散连接Ti3Al基金属间化合物,通过对接头的力学性能及微观结构的分析,研究了中间层合金TiZrNiCu中Zr元素对Ti3Al基金属间化合物TLP扩散连接接头组织和性能的影响规律和机理。结果表明,在连接工艺相同条件下,随着中间层合金中添加元素Zr含量减小,Ti3Al基TLP扩散焊接头强度增大;通过延长后续扩散处理时间,可以减小Zr元素对接头组织性能的不利影响。In this paper microstructure and mechanical properties of TLP diffusion bonding joints of Ti3Al-based alloy with bonding materials of TiZrNiCu foils are analyzed, and effect of Zr bonding materials on microstructure and mechanical properties of the joints is investigated. The results show that, at the same bonding process, along with the content of Zr bonding materials decreasing, the strength of Ti3 Al-based alloy TLP diffusion bonding joints increases; via prolonging subsequent diffusion-treating time, disadvantageous effects of Zr in bonding materials on mierostruetures and properties of joints may decrease and even disappear.

关 键 词：ZR TI3AL TLP扩散焊 组织 性能 

分 类 号：V263[航空宇航科学与技术—航空宇航制造工程] TG146.23[一般工业技术—材料科学与工程]