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 ten...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.展开更多
The filler metals of AgAlTi and AgAlTiCo were selected for the vacuum brazing of TiAl alloy and 42CrMo under different processing parameters. The results show that for both filler metals, the highest tensile strength ...The filler metals of AgAlTi and AgAlTiCo were selected for the vacuum brazing of TiAl alloy and 42CrMo under different processing parameters. The results show that for both filler metals, the highest tensile strength of joint can be achieved at 950℃, 15min, and with the addition of Co the joint strength becomes higher. By the comparison of the microstructure of joints, the joint interface is the main factor that influences the joint strength.展开更多
文摘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.
文摘The filler metals of AgAlTi and AgAlTiCo were selected for the vacuum brazing of TiAl alloy and 42CrMo under different processing parameters. The results show that for both filler metals, the highest tensile strength of joint can be achieved at 950℃, 15min, and with the addition of Co the joint strength becomes higher. By the comparison of the microstructure of joints, the joint interface is the main factor that influences the joint strength.