电焊机2017，Vol.47Issue(5)：8-11,15,5.DOI:10.7512/j.issn.1001-2303.2017.05.02
T2纯铜线性摩擦焊接研究
Study on linear friction welding of pure copper T2
摘要
Abstract
Linear friction welding (LFW) of pure copper T2 was carried out under different friction pressures,and the microstructure and properties of the joints were investigated.The weld zone (WZ) consists of fine grains from recrystallization,and local defects such as swirling flow,non-welded hole and particle inclusions.The microstructure of thermo-mechanically affected zone (TMAZ) is similar to the base metal just experiencing recovery.In addition,the WZ and TMAZ cover a much wider range.The tensile strength of the joints under friction pressures of 50 MPa and 70 MPa are approximately comparable to that of the base metal.The analysis shows that the joint is inclined to form a wide softening zone due to the good plasticity and high thermal conductivity of pure copper during LFW,leading to a poor plastic metal flow and following by defects on the friction interface.A suggestion that heat input rate should be increased during LFW of T2 is given.关键词
T2纯铜/线性摩擦焊/热输入速度Key words
pure copper T2/linear friction welding/heat input rate分类
矿业与冶金引用本文复制引用
唐龙飞,马铁军,李文亚,张勇,王刚..T2纯铜线性摩擦焊接研究[J].电焊机,2017,47(5):8-11,15,5.基金项目
国家自然科学基金(51675435) （51675435）
凝固技术国家重占实验室自主课题(122-QZ-2015) （122-QZ-2015）
