Partial Titanium-Vanadium Phase Diagram

Abstract

Titanium and vanadium form a complete series of solid solutions at temperatures above 885°C. Below 885°C, vanadium is slightly soluble in α titanium (about 1.5 pet V at 650°C) and a two-phase α plus β region extends to 18.5 pet V at 650°C. The alloys up to 15.0 pet V transform into a supersaturated α solid solution upon rapid cooling from the β phase. Above 15 pet V the β phase may be retained. The temperature at which the β to β martensite-type transformation takes place decreases steadily from 850°C for 0.5 pct V to 325°C for 12.7 pct V.