表面纳米化处理对钛与锆扩散连接工艺影响  

Influence of the surface nano-treatment on diffusion bonding of titanium and zirconium

作　　者：卞世伟 李淳[2] Bian Shiwei;Li Chun(Harbin Boiler Company Limited,Harbin 150046,Heilongjiang,China;Harbin Institute of Technology,Harbin 150001,Heilongjiang,China)

机构地区：[1]哈尔滨锅炉厂有限责任公司,黑龙江哈尔滨150046 [2]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《机械制造文摘（焊接分册）》2021年第3期25-28,共4页Welding Digest of Machinery Manufacturing

摘　　要：对钛与锆进行表面纳米化处理,将表面纳米化后的钛与锆及未处理的钛与锆在不同的连接工艺下进行扩散连接,并对接头进行组织分析及性能测试。结果表明,在温度从650~700℃的过程中温度对焊合率影响显著,此后随着温度的升高,扩散层厚度在不断变厚,抗剪强度不断提高由291 MPa不断上升至692 MPa。温度越高,原子获得能量高,相互扩散越充分。在相同的连接条件下,表面纳米化处理后的试样界面焊合率更高,扩散层更厚。The surface of titanium and zirconium was nano treated.Titanium and zirconium after surface nanocrystallization and untreated titanium and zirconium were diffusion-bonded under different bonding processes,and the joints were subjected to tissue analysis and performance testing.The results showed that the effect of temperature on the weldability during the temperature ranging from 650℃to 700℃was more significant.After that,with the increase of temperature,the thickness of the diffusion layer was continuously thickened,and the shear strength continuously increased from 291 MPa to 692 MPa.The higher the temperature was,the higher the energy of the atoms was and the more the mutual diffusion was.Under the same connection conditions,the surface soldering rate of the sample after surface nanocrystallization treatment was higher,and the diffusion layer was thicker.

关 键 词：扩散连接 钛 锆 抗剪强度 

分 类 号：TG453[金属学及工艺—焊接]