Influence of mechanical surface treatments on the high cycle fatigue performance of TIMETAL 54M

▶ Effect of mean stress and environmental sensitivities on high cycle fatigue (HCF) performance in TIMETAL 54M compared to Ti-6Al-4V. ▶ TIMETAL 54M shows normal mean stress sensitivity but Ti-6Al-4V shows anomalous mean stress. ▶ Both alloys are sensitive to air environment. ▶ HCF performance of TIMETAL 54 M was enhanced after shot peening and ball-burnishing but deteriorated in Ti-6Al-4V.