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研究了Ti-33Al－3Cr－0.5Mo（％）合金的高温拉伸力学性能。研究发现，在950℃下．合金试样就表现出了超塑性变形特征；在1000℃下，初始应变速率范围为2．0×10(－4)～6.0×10(-4)s(-1)时,试样的延伸率均大于200％．且最大延伸率为305％，相应的应变速率敏感性指数在0.33～0．57之间。对显微组织的分析结果表明,合金试样在超塑性变形过程中形成了大量孔洞，孔洞的连接是造成试样断裂的重要原因。
The tensile mechanical properties of Ti-33Al-3Cr-0.5Mo (%) alloy were studied. The study found that at 950 ℃. The alloy samples show the characteristics of superplastic deformation. When the initial strain rate is in the range of 2.0 × 10 -4 to 6.0 × 10 -4 s -1 at 1000 ℃, Rate of more than 200%. And the maximum elongation of 305%, the corresponding strain rate sensitivity index between 0.33 ~ 0.57. The analysis of the microstructure shows that a large number of holes are formed during the superplastic deformation of the alloy specimen. The connection of the holes is an important reason for the fracture of the specimen.