Formation of intermetallic compounds through transfer and diffusion of shot particle element using AIH-FPP system

Abstract

Atmospheric-controlled induction-heating fine particle peening (AIH-FPP) treatment was performed for titanium alloy to fabricate Ti-Al intermetallic compounds through the transfer and diffusion of shot particle element. High-speed steel particles and aluminum particles were mechanically milled, and high-speed steel particles coated with thin aluminum layers were created. The created particles were used as shot particles for AIH-FPP treatment. Al transferred layers were created on the surface of titanium alloy by AIH-FPP treatment. Heating to a high temperature after peening created Ti-Al intermetallic compounds with high hardness because the Al transferred to the treated surface during peening was diffused into the titanium alloy.