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对全片层收组织的TiAl金属门化合物进行了三个应变率（1001／s，3001／s，8001／s）的冲击拉伸试验研究，得到了材料在不同应变率下的完整的应力应变曲线。结果表明在不同应变率下，TiAl金属间化合物均为脆性破坏，但随着应变率的增加，材料的破坏应力和失稳应变也随之增大，具有应变率强化和动态韧性的变形特征.SEN分析表明材料的破坏主要以穿晶破坏为主，并且随着层片位向的不同，断口的形貌也有很大差异，由于层片状晶粒之间存在着极强的各向异性以及颗粒尺寸的影响，早在弹性变形阶段，晶粒之间的不协调性已经出现。最后根据材料在不同应变率下的试验结果和材料强度的Weibull统计分布理论，本文给出了TiAl金属间化合物强度的应变率相关的本构方程，拟合结果表明，TiAl金属间化合物强度Weibull分布的尺度参数σo和形状参数β均是应变率的相关函数，且数据拟合结果与试验结果十分吻合。
Tensile tensile tests were conducted on the whole sheet of TiAl metal-gate compound with three strain rates (1001 / s, 3001 / s, 8001 / s). The complete stress- curve. The results show that the TiAl intermetallics are all brittle failure at different strain rates. However, with the increase of the strain rate, the failure stress and instability strain of the TiAl intermetallic compound increase with the increase of the strain rate and the deformation characteristics of dynamic toughness. SEN analysis shows that the material damage is mainly caused by transgranular destruction, and the morphology of the fracture varies greatly with the orientation of the lamella. Due to the strong anisotropy between lamellar grains and The influence of particle size, early in the elastic deformation phase, the incompatibility between the grains has emerged. Finally, according to the test results of the material at different strain rates and the Weibull statistical distribution theory of the material strength, the constitutive equations related to the strain rate of TiAl intermetallics strength are given. The fitting results show that the Weibull distribution of TiAl intermetallics The scale parameter σo and the shape parameter β are the correlation functions of the strain rate, and the data fitting results are in good agreement with the test results.