This novel light-weight (density ~ 5 g/cm3) Ti-rich High-entropy alloy is the first one ductile alloy designed by the alloys concept of High-entropy alloys. It can be produced by VAM and casting. Remarkably, the casting alloy can be hot-rolled and cold-rolled of 70% strain. The tensile yield strength of the casting one and cold-rolled (after recrystallization) alloy were around 1000 MPa and tensile elongation were around 30%,which was more ductile than commercial titanium alloys, Ti-6Al-4V (elongation ~18%). For wear resistance property, this novel Ti-rich alloys obtain 70% higher wear resistance performance than Ti-6Al-4V alloys.This light-weight High-entropy alloy was designed by CALPHAD phase diagram and non-equiatomic designing concept. This successful work also introduced the novel design concept, and more research was conducted in similar concept since this innovative idea was proposed in 2019. The novel light-weight Ti-rich High-entropy alloy is the first successful work. It can be conducted in casting, forging processing, and even, obtain excellent ductility and wear resistance performance.This novel light-weight High-entropy alloy obtain the equivalent specific tensile strength and more outstanding ductility compared with the commercial Ti-6Al-4V alloys. With the high specific strength and excellent wear resistance performance, this alloy can be applied on the aerospace and automobile industry.
With outstanding ductility (~32% elongation), this alloy can be conducted in the casting and forging processing. The excellent machinability of this alloy led it to be applied on the high-priced industry such as golf head and components of bicycle.