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研究了三种不同处理的Ｔｉ—５５合金在Ｈｏｐｋｉｎｓｏｎ压杆上高速冲击变形时产生的热塑剪切带结果表明，三种不同处理的合金试样在不同应变率下出现两种类型的剪切带：形变剪切带和“白色”剪切带．它们是在不同应变阶段下形成的对应“白色”剪切带有一应变突变ＴＥＭ观察未发现“白色”剪切带内发生相变、孪生是该合金动态冲击时变形的重要方式．
The results of the thermomechanical shear bands generated by the high-speed impact deformation of the Ti-55 alloy on the Hopkinson pressure bar were studied. The results show that there are two types of shear at three different strain rates Belt: Deformation shear band and “white” shear band. They are formed at different stages of strain corresponding to the “white” shear zone with a strain mutation TEM observation found no “white” shear band within the phase transition, the twin is the dynamic deformation of the alloy an important way of deformation.