Effect of brazing parameters on microstructure and mechanical properties of Ti5Si3/Ti3Al composite joints brazed with Ti-Zr-Cu-Ni filler alloy

被引：3
|
作者：
Zhang, Tongtong [1 ]
He, Yongsheng [1 ]
Fan, Guohua [2 ]
Wang, Kaixuan [1 ]
Liu, Xianghong [1 ]
Geng, Lin [2 ]
机构：
[1] Western Superconducting Technol Co Ltd, Xian 710018, Peoples R China
[2] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
WELDING IN THE WORLD | 2021年 / 65卷 / 06期
基金：
中国国家自然科学基金;
关键词：
Ti5Si3; Ti3Al composite; Brazing; Ti– Zr– Cu– Ni; Interfacial microstructure; Mechanical properties;
D O I：
10.1007/s40194-021-01072-9
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
In this study, Ti5Si3/Ti3Al composite was successfully vacuum-brazed with Ti-33Zr-16Cu-13Ni (wt.%) filler alloy. The typical interfacial microstructure of the joints presented a symmetrical characteristic, which mainly consisted of Ti3Al, Ti2Ni, and alpha-Ti phases. The effects of brazing temperature and holding time on the interfacial microstructure and mechanical properties of the joints were investigated in details. The optimized average shear strength of 224 MPa was obtained when brazing at 900 degrees C for 5 min. The high temperature shear strength of the joints reached 377 and 405 MPa at 600 and 650 degrees C, respectively. In addition, the microstructure evolution mechanism of the joints was put forward based on the experimental analysis.
引用
收藏
页码：1171 / 1180
页数：10
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