Brazing of Ti2 AlNb Based Alloy with Amorphous Ti-Cu-Zr-Ni Filler
来源期刊：Journal Of Wuhan University Of Technology Materials Science Edition2015年第3期
论文作者：王刚 HUANG Yongjiang WANG Guochao SHEN Jun CHEN Zhihao
文章页码：617 - 621
摘 要：Amorphous Ti-Cu-Zr-Ni fi ller foils with low melting point of 1 133 K were synthesized using a melt-spinning method in argon atmosphere. A Ti2 Al Nb based alloy was brazed at 1 153-1 223 K for 600-3 000 s. The effects of brazing temperature（Tb） and time（tb） on the shear strength of the joints were investigated. The results showed that the joint strength was signifi cantly affected by the reaction layer thickness. The optimum brazing parameters can be determined as follows: Tb=1 173 K, and tb=600 s. The maximum tensile strength of the joint obtained can reach 260 MPa. Furthermore, the activation energy Q and the growth velocity A0 of the reaction layer in the brazed joints were calculated to be 161.742 k J/mol and 0.213 m2/s, respectively. The growth of the reaction layer（y） could be expressed by the expression: y2 =0.213exp（-19 454/Tb）tb.
王刚1，HUANG Yongjiang2，WANG Guochao2，SHEN Jun2，CHEN Zhihao1
1. Anhui Key Laboratory of High-performance Non-ferrous Metal Materials, Anhui Polytechnic University2. School of Materials Science and Engineering,Harbin Institute of Technology
摘 要：Amorphous Ti-Cu-Zr-Ni fi ller foils with low melting point of 1 133 K were synthesized using a melt-spinning method in argon atmosphere. A Ti2 Al Nb based alloy was brazed at 1 153-1 223 K for 600-3 000 s. The effects of brazing temperature（Tb） and time（tb） on the shear strength of the joints were investigated. The results showed that the joint strength was signifi cantly affected by the reaction layer thickness. The optimum brazing parameters can be determined as follows: Tb=1 173 K, and tb=600 s. The maximum tensile strength of the joint obtained can reach 260 MPa. Furthermore, the activation energy Q and the growth velocity A0 of the reaction layer in the brazed joints were calculated to be 161.742 k J/mol and 0.213 m2/s, respectively. The growth of the reaction layer（y） could be expressed by the expression: y2 =0.213exp（-19 454/Tb）tb.
关键词：
