The effect of different crystal conditions of filler metal on vacuum brazing of TiAl alloy and 42CrM

• 作 者: 朱颖 张茉 王国建 李文轶 康慧 曲平
• 机 构: Material Processing & Control Engineering Department Beihang University,Material Processing & Contro
• 出 处: China Welding
• 发表日期: 2007年04期
• 关键词: TiAl filler tensile crystallized solidification solidified vacuum maybe joints g

Ti-based filler metals made by transient solidification and normal crystallization were selected for the vacuum brazing of the TiAl alloy and 42CrMo under different processing parameters.The results show that the tensile strength of the joint of transient solidified filler metal is higher than that of normal crystallized filler metal under the same processing parameters.By the analysis of scanning electron microscope(SEM) and X-ray diffracting(XRD),it is found that the higher strength maybe caused by the generating of TiAl,TiNi and TiCu at the interface of joint made by transient solidified filler metal.

Ti-based filler metals made by transient solidification and normal crystallization were selected for the vacuum brazing of the TiAl alloy and 42CrMo under different processing parameters. The results show that the tensile strength of the joint of transient solidified filler metal is higher than that of normal crystallized filler metal under the same processing parameters.By the analysis of scanning electron microscope (SEM) and X-ray diffracting (XRD), it is found that the higher strength may caused by the generating of TiAl, TiNi and TiCu at the interface of joint made by transient solidified filler metal.