بررسي تغييرات ريزساختاري آلياژ Ti-6Al-4V كار گرم شده بعد از انجام فرايند آنيلينگ

Investigation of microstructure change in hot deformed Ti-6A1-4V alloy after annealing process

Ti-6A1-4V alloy, which belongs to the two phases titanium alloys group, is the most widely used because they have optimum mechanical and corrosion resistance properties in the industrial applications. Many aerospace parts are manufactured by hot forming process. The properties of titanium parts depend on the final microstructures. The effect of different ranges of heating temperature, hot deformation conditions and annealing cycles were investigated to evaluate the effect of microstructure. A wide range of non-equilibrium microstructure such as, basket weave, acicular and globularized micro structures were observed. The improved the strength and the fatigue properties were achieved.