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...
出处
《航空材料学报》
EI
CAS
CSCD
2006年第3期111-115,共5页
Journal of Aeronautical Materials
关键词
TI3AL基合金
氩弧焊
显微结构
力学性能
Ti_3Al based alloy
gas tungsten arc （GTA） welding
microstructure
mechanical properties
