Abstract
4Using the methods of transmission and scanning electron microscopy, the defect substructure of a V–4Ti–4Cr– (C, N, O) alloy dispersion strengthened with nanosized oxicarbonitride particles and the features of its fracture after deformation via active tensile loading at the temperatures 20 and 800°C are investigated. It is shown that the most representative features of deformation at the elevated temperature is primarily activation of grainboundary mechanisms of deformation and fracture and secondly strain localization accompanied by crystallattice re-orientation. The reasons for these phenomena are discussed.
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