摘要
The aim of this study is to master the influence of the forging process on the micro structure and properties of TA15 flat billets,and to determine the appropriate forging process for the field.In this study,the effects of different forging deformation processes on the micro structure and mechanical properties of TA15 titanium alloy flat billets(80 mm×150 mm×1400 mm)were investigated.The billets underwent various heat treatments at 800-850℃for 1-4 h,and their resulting microstructures and mechanical properties were analyzed.The results showed that billets formed at a primary forging temperature(T_(1)),then air-cooled,and then subjected to a secondary forging temperature(T_(2))with rapid cooling,contained only 10%primaryα-phase,alongside abundant thin acicular phases.This micro structure exhibited high strength at both room and elevated temperatures,with comparable transverse and longitudinal strengths.These findings suggest that a two-step forging process—primary forging followed by air cooling,then secondary forging followed by rapid cooling—is ideal for manufacturing aircraft frame components.
基金
funding received from the National Key R&D Program of China(No.2022YFB3705600)。
