超塑成形比传统加工方法能大大节约成本及质量，它已取得商业和技术上的成功，尤其是应用在航空用钛构件的制作上。当钛在高温空气中暴露时，不仅会发生氧化，而且会由于氧渗入形成称为“α壳”的表面硬化层而使合金表面固溶硬化。由于富氧α相结构的脆性本质，α壳层是有害的 Superplastic forming saves significant cost and quality over traditional processing methods. It has achieved commercial and technical success, especially in the production of aviation titanium components. When titanium is exposed to high temperature air, not only oxidation occurs, but also the alloy surface is solution-hardened due to the infiltration of oxygen into a surface hardened layer called “? Shell.” The alpha shell is detrimental due to the fragile nature of the oxygen-rich alpha phase structure