TiAl 合金板材轧制研究现状

TiAl alloy sheets are important strategic structural materials in aerospace and automotive industry because of their high strength-to-weight ratio and high service temperature. However, the preparation of TiAl alloy sheets is difficult, especially the rolling of large-size high-performance TiAl alloy sheets. The preparation process, size, microstructure, and mechanical properties of hot-rolling TiAl alloy sheets using ingot metallurgy, powder metallurgy, direct rolling, and roll bonding approaches in recent years were reviewed. The features and existing problems of the above processing routes were discussed. Meanwhile, some suggestions on rolling large-size TiAl alloy sheets and its future development were proposed.