Abstract
A study has been made of the structure of adiabatic shear zones in Ti-6% Al-4% V with different parent microstructures, resulting from ballistic impact of steel spheres. Metallographic examination of well-developed shear bands showed that they consisted of zones of intense shearing distortion of the original microstructure, modified by the effects of elevated temperature. An analogy is made between their structure and that of the white-etching shear zones observed in steels. Unlike steels, however, there was no clear evidence in this alloy to suggest that the shear bands in the α + β microstructures had undergone a martensitic phase transformation. The structure of the shear zones in an α' martensite parent alloy appeared to be a tempered form of the original microstructure.
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