Warm-Die-Forming of Beta Titanium Alloy Strip.

摘要

Continuous strip of Ti-8Mo-8V-2Fe-3Al was investigated for possible application in the nose cap for the main rotor blade of the Heavy Lift Helicopter as part of the Advanced Technology Component Program. Aging response of strip solutionized in a continuous vacuum annealing furnace and subsequently cold rolled was determined as functions of time and temperature for several levels of cold reduction. Tensile and fatigue properties of strip produced by selected practices were measured. Feasbility of creep forming solutionized-and-cold-rolled strip to nose cap contours during aging was explored. Warm die forming and aging of strip to those same contours was demonstrated. (Author)