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一、引言广泛使用扩散焊的Ti—6Al—4V合金在850°—950℃时发生超塑变形。据报道这种合金的超塑行为受显微组织影响极大。另外,在扩散焊的接合过程中,
I. INTRODUCTION The widespread use of diffusion welding of Ti-6Al-4V alloy occurred at 850 ° -950 ℃ superplastic deformation occurs. It is reported that the superplastic behavior of this alloy is greatly affected by the microstructure. In addition, in the diffusion bonding process,