Phase stability and tensile behavior of metastable β Ti-V-Fe and Ti-V-Fe-Al alloys

The tensile property and deformation microstructure of a series of metastable β Ti-V-Fe and Ti-V-Fe-Al alloys have been studied. The results show that although Al is an α-stabilizer element, Al addition suppresses the athermal ω phase transformation in metastable β Ti-V-Fe-Al alloys. The Ti-16V-Fe alloy plastically deforms via {332}〈113〉 mechanical twinning and stress-induced ω phase with a special habit plane of {−5052}ω//{3-3-2}β, and the...