Surface Hardening of Ti-15V-3Al-3Cr-3Sn Alloy after Cyclic Hydrogenation and Subsequent Solution Treatment

الملخص EN

The as-received and preheated (1000°C-30 min.

and 500°C-30 min.) sheets of Ti-15V-3Al-3Cr-3Sn alloy (Ti-153) were treated according to the predetermined process including a cyclic electrolytic hydrogenation (at 50 mA/cm2 for 1 hr and at 5 mA/cm2 for 10 hrs) combining a subsequent solution treatment to see the effects of various operating parameters on the evolution of microstructure and the variations of hardness.

The hardening effect deriving from solid-solution strengthening of hydrogen eventually overrode that from precipitation hardening.

The maximum hardness elevation was from 236.9 to 491.1 VHN.