Cryogenic Mechanical Properties of Ti-6Al-4V Alloys with Three Levels of Oxygen Content.

Abstract

Tensile, fractu!e toughness, and high cycle fatigue tests were done at 293, 77, and 4K for Ti-6Al-4V alloys with three levels of oxygen content. The alloys were investigated both in as-forged condition and in the rolled condition. Rolling did not necessarily makeoc grains finer, but changedthe shape from plate-like to globular. Strengths dependedmainly on the oxygen content; the lower content produced lower strengths.