Microstructure and microhardness of the Til5Mo alloy subjected to severe plastic deformation in a+p condition

摘要

Metastable p-titanium alloys are perspective candidates for use in biomedicine. For that purpose a high strength of these materials is required. The enhanced strength of these alloys can be achieved by subjecting the material to severe plastic deformation. However, due to the limited ductility of the metastable p-titanium alloys, deformation of the alloy in p solution treated condition at room temperature is sometimes inaccessible. In this study a Til5Mo alloy in a two phase a+p condition was subjected to equal channel angular pressing at elevated temperature *of 400°C. The resulting microstructure after N=4 and 8 ECAP passes consists of deformed P-phase with elongated a-phase particles. Despite the microstructure is not ultra-fine grained the microhardness of the deformed alloy exhibits higher values compared to the non-deformed counterpart.