Very strong pure titanium by field assisted hot pressing of dual phase powders

Abstract

Very strong pure Ti, with room temperature compressive yield stresses up to 1.80GPa, was developed by field assisted hot pressing of a mixture of hcp (α) and fcc powders produced by mechanical milling. During consolidation the fcc phase decomposes into α-Ti and a dispersion of TiC particles. Tuning the pressing temperature and time allows controlling the grain and particle size and, thus, the yield strength and plasticity.