Effect of Heat Treatment on the Electrochemical Corrosion Behavior of Ti- 15 V- 3 Al- 3 Cr- 3 Sn Alloy in HCl and NaCl Media

Abstract

Titanium alloys are extensively used in Aerospace Industry. Presently, the alloy Ti-6Al-4V (α-β alloy) is widely employed while metastable β-alloys are gaining priority over α-β alloys. Metastable β-alloys can be aged for hardening by precipitation. But the corrosion properties of these alloys might get altered. Hence, the present studies are to investigate the effect of heat treatment on corrosion behavior of Ti-15V-Cr-3Al-3Sn (β-Ti alloy). The evaluation is carried out by polarization studies in various environments viz. HCl and NaCl with different concentrations. It has been observed that the corrosion property of β-titanium alloy is intact even after aging.