火箭推进2018，Vol.44Issue(6)：57-61,5.
电子束焊接能量对焊缝力学性能的影响研究
Effect of electron beam welding energy on mechanical properties of weld
摘要
Abstract
The effect of electron beam welding energy on the mechanical properties of TC4 titanium alloy welds was studied,which provided a theoretical basis for the designer and technologist to determine the repair welding times. The results show that with the increase of the time of electron beam welding, the welding energy input and the residual tensile stress of welding increase gradually,which leads to the decrease of the tensile properties and the fracture elongation for the weld. When the number of welding time is up to 6,the tensile strength is 927 MPa and lower than 90％ of the base metal strength,which cannot meet the GJB1718A - 2005I grade standard requirements. When the number of welding time is up to 4,the fracture elongation of weld is less than 10％. As a result,the welding time shall not exceed 3 times in order to meet the first - level welding standard.关键词
钛合金/电子束/力学性能/应力Key words
titanium alloy/electron beam/mechanical properties/stress分类
航空航天引用本文复制引用
于康,刘泽敏,周杰..电子束焊接能量对焊缝力学性能的影响研究[J].火箭推进,2018,44(6):57-61,5.基金项目
阀座密封性型面数控加工技术研究项目(2016TM·JY5008-M) （2016TM·JY5008-M）
