TA22合金扩散焊接接头的组织与性能  

Microstructure and Mechanical Properties of Diffusion Welded Joints of TA22 Titanium Alloy

作　　者：李彦默 马照伟 徐哲 李培跃[1] 付文 刘向前 李秋龙[1] 陈斌 余黎明[2] 刘晨曦[2] LI Yanmo;MA Zhaowei;XU Zhe;LI Peiyue;FU Wen;LIU Xiangqian;LI Qiulong;CHEN Bin;YU Liming;LIU Chenxi(Luoyang Ship Material Research Institute,Luoyang 471023,China;School of Materials Science&Engineering,Tianjin University,Tianjin 300354,China)

机构地区：[1]中国船舶重工集团公司第七二五研究所,河南洛阳471023 [2]天津大学材料科学与工程学院,天津300354

出　　处：《材料开发与应用》2021年第5期10-15,共6页Development and Application of Materials

摘　　要：利用真空扩散焊接方法,研究不同焊接温度对TA22合金接头组织和性能的影响,并通过焊后热处理改善接头的综合性能。结果表明:随着扩散焊接温度的升高,TA22合金扩散焊接接头的抗拉强度和屈服强度逐渐降低,而伸长率和断面收缩率则表现出先升高后降低的趋势,其拐点在950℃.经850℃退火处理后,TA22合金扩散焊接接头的塑性得到明显的改善。Vacuum diffusion bounding technique was adopted to weld TA22 titanium alloy, the effects of welding temperature on microstructure and mechanical properties of the joints were investigated, and post-weld heat treatment was adopted to improve the comprehensive performance of the joints. The results showed that with the increasing of welding temperature, the tensile strength and yield strength of the TA22 joint decreased, the elongation and reduction of area increased at first and then decreased, and the maximum elongation and reduction of area of diffusion welded were at 950 ℃. The plasticity of the TA22 joints were improved by annealing treatment.

关 键 词：钛合金 扩散焊接 热处理 界面组织 力学性能 

分 类 号：TG132[一般工业技术—材料科学与工程]