Ti-24Al-15Nb-1Mo合金氩弧焊  

Gas Tungsten Arc Welding of Ti-24Al-15Nb-1Mo Alloy

作　　者：刘卫红 李艳 毛唯[1] 李晓红[1] 曹春晓[1] 

机构地区：[1]北京航空材料研究院

出　　处：《航空材料学报》2006年第3期111-115,共5页Journal of Aeronautical Materials

摘　　要：研究用Ti-A l-Nb基(高Nb)合金作填充材料氩弧焊(充氩箱中)Ti-24A l-15Nb-1Mo合金时的焊缝成形及其接头显微结构和力学性能特点。结果表明,固溶处理状态下母材氩弧焊时具有较低的冷裂纹敏感性。焊态下,接头抗拉强度912~927MPa,延伸率2.5%~3.7%,焊缝冲击韧性4.7 J/cm2~10.4 J/cm2,近热影响区是接头力学性能的薄弱区域。Ti-24Al-15Nb-1Mo alloy was welded by gas tungsten arc(GTA) welding(in argon chamber) with Ti-Al-Nb based alloy,the weld formation,the microstructure and mechanical properties of the joint were investigated.The experimental results show that,under solution treatment condition,this alloy has lower cold-crack susceptibility.As-welded,tensile strength of the joint is 912～927MPa,plastic elongation is 2.5%～3.7% and impact toughness is 4.7J/cm^2～10.4J/cm^2 at room temperature.Most of the tensile samples failed wit...

关 键 词：TI3AL基合金 氩弧焊 显微结构 力学性能 

分 类 号：TG444[金属学及工艺—焊接]