Deformation characteristics of submicrocrystalline Ti-6Al-4V

Abstract

This study reports the deformation characteristics of submicrocrystalline Ti-6Al-4V at low temperatures (similar to 0.5T(m)). Microstructural observations revealed that further grain refinement was not attained at a high strain of similar to 4 since microstructure evolution was marked by an increase in the fraction of high-angle grain boundaries rather than by a reduction in grain size. Mechanical properties of submicrocrystalline Ti-6Al-4V were evaluated in tension and are discussed based on a dynamic-materials model. (C) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.