Microstructure and Mechanical Properties of C/C Composite/TC17 Joints with Ag-Cu-Ti Brazing Alloy

5th Annual International Conference on Material Science and Engineering

Cao, Xiujie^1 ; Zhu, Ying^1 ; Guo, Wei^1 ; Peng, Peng^1 ; Ma, Kaituo^1

School of Mechanical Engineering and Automation, Beihang University, No.37 Xueyuan Road, Haidian District, Beijing

100191, China^1

关键词: Brazing alloys;    Brazing temperature;    C/C composites;    Energy dispersive spectrometers;    Interfacial microstructure;    Joint property;    Microstructure and mechanical properties;    Testing machine;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/275/1/012040/pdf
DOI  :  10.1088/1757-899X/275/1/012040

来源: IOP

【 摘 要 】

Carbon/Carbon composite(C/C) was vacuum brazed to titanium alloy (TC17) using Ag-Cu-Ti brazing alloy. The effects of brazing temperature on the interfacial microstructure and joint properties were investigated by energy dispersive spectrometer (EDS), a scanning electron microscope (SEM), X-ray diffraction (XRD) and Gleeble1500D testing machine. Results show that C/C composite and TC17 were successfully brazed using AgCuTi brazing alloy. Various phases including TiC, Ag(s, s), Cu(s, s), Ti3Cu4, TiCu, and Ti2Cu were formed in the brazed joint. The maximum shear strength of the brazed joints with AgCuTi brazing alloy was 241 MPa when brazed at 860°C for 15 min.