Interfacial Microstructure Evolution and Mechanical Properties of TC4/MgAl_(2)O_(4)Joints Brazed with Ti-Zr-Cu-Ni Filler Metal

作     者：Jiafen Song Wei Guo Shiming Xu Ding Hao Yajie Du Jiangtao Xiong Jinglong Li Jiafen Song;Wei Guo;Shiming Xu;Ding Hao;Yajie Du;Jiangtao Xiong;Jinglong Li

作者机构：State Key Laboratory of Solidification ProcessingNorthwestern Polytechnical UniversityXi’an710072China Shaanxi Key Laboratory of Friction Welding TechnologiesNorthwestern Polytechnical UniversityXi’an710072China 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2024年第37卷第12期

页      面：2057-2067页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China(Grant No.51975480 and 52045449) the Research Fund of the State Key Laboratory of Solidification Processing(NPU),China(Grant No.2023-TS-11) 

主　　题：Brazing TC4 titanium alloy MgAl_(2)O_(4) Microstructure High-entropy metallic glasses 

摘      要：In the present study,Ti-Zr-Cu-Ni amorphous filler metal was used to braze MgAl_(2)O_(4)ceramic and Ti-6Al-4V(TC4)at 875,900,925,950,975 and 1000℃for 10 *** effects of brazing temperature on interfacial microstructure and mechanical properties of the joints were *** results showed that typical microstructure of the TC4/MgAl_(2)O_(4)joint was solid solution(SS)α-Ti,acicularα-Ti+(Ti,Zr)_(2)(Ni,Cu)layer,metallic glasses and *** the increase in brazing temperature,(Ti,Zr)_(2)(Ni,Cu)layer gradually dispersed at bonding interface,a continuous layer of TiO appears near MgAl_(2)O_(4)*** the increase in brazing temperature,the hard and brittle(Ti,Zr)_(2)(Ni,Cu)layer gradually dispersed,resulting in the maximum shear strength of 39.5 *** high-resolution TEM revealed the presence of amorphous structure,which is composed of Ti,Zr,Cu,Ni and *** values ofδandΔH_(mix)are calculated to be about 8%and−39.82 kJ/mol for the amorphous phase.