Recovery of Ti-6Al-4V Alloy Scrap by Hydrogenation and Hydride Sintering

Abstract

The research of recycling Ti-6Al-4V alloy industry scrap is conducting by hydrogenation and hydride sintering process. The Ti-6Al-4V alloy scrap was submitted to a activation treatment under vacuum atmosphere and hydrogenation process under pure H2 gas, the hydrogenated product was attained. Sintering process used hydrogenated titanium alloy powder as a feedstock material. The oxygen content of raw scrap, hydrogenated Ti-6Al-4V alloy powder and as-sintered Ti-6Al-4V alloy was 0.107%, 0.256% and 0.117%, respectively. Compression and Vickers hardness tests were conducted on the as-received and as-sintered Ti-6Al-4V alloy to evaluate their mechanical properties.