不同热处理对TC4/Ti60电子束焊接头微观组织及力学性能的影响

不同热处理对TC4/Ti60电子束焊接头微观组织及力学性能的影响 Effect of heat treatment on microstructure and tensile properties of electron beam welded TC4/Ti60 joint 王世清 WANG Shiqing 1 first-author 邢博 XING Bo 1 赵启喆 ZHAO Qizhe 1 焦迎香 JIAO Yingxiang 1 强伟 QIANG Wei 1 西安石油大学材料科学与工程学院 西安石油大学材料科学与工程学院 College of Material Science and Engineering,Xi’an Shiyou University College of Material Science and Engineering,Xi’an Shiyou University 采用不同热处理工艺对10 mm厚的钛合金TC4/Ti60电子束焊接接头进行了研究,对比分析了TC4/Ti60接头在分别经历退火700℃×2 h(AC)及固溶时效980℃×1 h(FC)+700℃×2 h(AC)后,在显微组织、显微硬度及拉伸性能等方面的特征。结果表明:TC4/Ti60接头经过退火后,组织和性能与焊态相当,但当TC4/Ti60接头经过固溶时效后,TC4/Ti60接头的组织更均匀,硬度及强度比退火时略低,并且塑性增加,综合性能良好。 The electron beam welding（EBW） joint of 10 mm thick titanium alloy TC4/Ti60 was studied by different heat treatment processes. The microstructure,microhardness and tensile properties of TC4/Ti60 joint after annealing and solution aging were compared and analyzed. The results show that after annealing,the microstructure and properties of TC4/Ti60 joint are similar to those of as welded joint;after solution aging,the microstructure of TC4/Ti60 joint is more uniform,the hardness and strength are slightly lower than that of annealed joint,but the plasticity is increased and the comprehensive properties are good. 热处理 TC4/Ti60接头 电子束焊接 退火 固溶时效 TG156;TG407 国家自然科学基金资助项目（51975469）;陕西省自然科学基础研究计划项目（2018JQ6065） 2022-03-08 5 50