Surface hardening of titanium with aluminides using a combined technology including explosion welding, pressure treatment, and heat treatment
摘要
A surface modification technique of titanium with aluminides was experimentally tested. This method involves the explosion welding of a steel-aluminum-titanium composite, followed by pressure treatment to reduce the thickness of the aluminum layer. Subsequent annealing creates a diffusion zone of sufficient thickness at the steel-aluminum interface, enabling the spontaneous separation of the steel layer. A final heat treatment is then applied to induce liquid-phase interaction. The study demonstrates that the aluminide-based coating on the titanium surface forms due to the upward transport of detached TiAl3 fragments from the reaction zone by circulating melt flows.