TC4钛合金电子束焊接工艺技术研究

摘要

The electron beam welding technol-ogy and distortion of thick titanium alloy joints is inves-tigated. The effect of heat treatment on tensile and impact properties of thick titanium alloy joints by electron beam welding is analyzed. The results show that the transverse distortion of thick titanium alloy joints is higher than the lognitudinal distortion. The transverse distortion is 0.4~0.6mm, while the lognitudinal distortion is 0.1~0.5mm. The tensile and impact property of welded joints is affected by different heat treatment parameter. The tensile strength and yield strength of welded joints by heat treatment pa-rameter 2 are higher than the ones by heat treatment pa-rameter 1, but the percentage reduction of area, percentage extension and impact work of the former are lower than the ones of the later.%研究了厚板钛合金电子束焊接工艺及变形，分析了不同热处理工艺对焊接接头的拉伸性能和冲击性能的影响。试验结果表明，焊缝的横向变形量比纵向变形量大，横向变形为0.4~0.6mm，纵向变形为0.1~0.5mm。不同热处理条件对焊接接头的拉伸性能和冲击性能存在一定的影响。采用热处理工艺2的焊接接头抗拉强度、屈服强度略高于热处理工艺1，而其断面收缩率、延伸率和冲击功均低于热处理工艺1。