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采用Ｈｏｐｋｉｎｓｏｎ拉杆技术和常规拉伸技术，在室温、５×１０－４～８００ｓ－１应变速率范围内研究了具有复相（ＤＰ）和全片层（ＦＬ）组织的Ｔｉ－４７％Ａｌ－１．５％Ｃｒ－０．５％Ｍｎ－２．８％Ｎｂ合金的拉伸力学性能．发现在高应变速率（动态）和低应变速率（静态）条件下两种组织都呈现出接近零塑性．ＤＰ组织的抗拉强度（σｂ）比ＦＬ组织的高，同种组织动态σｂ比静态的高．扫描电镜断口分析结果表明，两种组织的静态和动态的断裂方式基本相同，都是以穿晶解理为主，局部区域伴有沿晶开裂；ＴｉＡｌ合金的动态脆性和静态脆性一样，主要不是由环境因素造成．
The Ti-47% Al-1 microstructure with complex phase (DP) and whole-layer (FL) microstructure was studied in the strain rate range of 5 × 10-4 ~ 800s-1 at room temperature using Hopkinson rod technology and conventional tensile technology Tensile Mechanical Properties of .5% Cr-0.5% Mn-2.8% Nb Alloy. Both tissues were found to exhibit near zero plasticity at both high strain rates (dynamic) and low strain rates (static). The tensile strength (σb) of the DP tissue is higher than that of the FL tissue, and the dynamic σb of the same tissue is higher than that of the static tissue. The results of SEM analysis show that the static and dynamic fracture modes of the two kinds of microstructures are basically the same, all of which are mainly transcrystallization cleavage accompanied by intergranular cracking. The dynamic brittleness of TiAl alloy is the same as that of static brittleness, Caused by environmental factors.