High-cycle fatigue resistance in beta-titanium alloys

A survey of high-cycle fatigue data for commercial beta-titanium alloys tea s conducted to rationalize the wide variations in fatigue resistance even n f similar tensile-strength levels. It was found that fatigue behavior, espe cially the endurance limits, for various alloy compositions can be roughly grouped into three classes on the basis of processing, heat treatment, and resulting microstructure. The implications of such classification on micros tructure control for increased fatigue resistance is discussed.