微量碳对阻燃钛合金焊接接头性能的影响  

Effect of Trace Carbon on Properties of Welded Joint of Burn Resistant Titanium Alloy

作　　者：李艳[1] 李小飞[1] 邓继雄[1] 张文扬[1] 张学军[1] 

机构地区：[1]北京航空材料研究院,北京100095

出　　处：《航空材料学报》2006年第3期126-129,共4页Journal of Aeronautical Materials

摘　　要：研究阻燃钛合金Ti-25V-15Cr,Ti-25V-15Cr-XC的电子束焊接头性能,对比分析母材中微量碳(C)对焊接接头性能的影响。试验结果表明,母材中的微量碳促使焊缝中形成较多的碳化物,提高接头的抗拉强度,降低接头的塑性,特别是大幅度降低焊缝的冲击韧性,仅为同状态不含碳母材焊缝的10%。The mechanical properties of EBW joint of Ti-25V-15Cr and Ti-25V-15Cr-XC burn resistant titanium alloys were tested,and the effect of trace carbon(C) in base metal on the properties of welded joint was investigated.The experimental results show that,there are many carbides formed in weld because of trace carbon(C) in base metal.As a result,the tensile stress of joint is improved,while the corresponding ductility is decreased.Particularly,the weld toughness of the base metal containing trace carbon(C) is dec...

关 键 词：微量碳 电子束焊 焊接接头 性能 

分 类 号：TG407[金属学及工艺—焊接]