Abstract We report on a methodology of powder sintering and in-situ press forging, which can be used to manipulate a new bimorphic microstructure in Ti-6Al-4V alloy. The microstructure contains typical triangle colonies with ultrafine lamellar α and β, and their border areas with ultrafine equiaxed α, dispersed nano/ultrafine β, as well as α/β interface L layers. Surprisingly, the bimorphic alloy exhibits excellent mechanical properties under both tensile and compressive conditions, far superior to other Ti-6Al-4V alloys and their composites reported so far. Therefore, this innovative methodology provides a simple and economical method for preparing high-performance metallic alloys in structural applications.

中文翻译：

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放电等离子烧结和原位压锻处理的 Ti-6Al-4V 合金的双晶显微组织

摘要 我们报告了一种粉末烧结和原位压锻的方法，该方法可用于在 Ti-6Al-4V 合金中处理新的双晶显微组织。微观结构包含具有超细层状α和β的典型三角形菌落，以及具有超细等轴α、分散的纳米/超细β以及α/β界面L层的边界区域。令人惊讶的是，双晶合金在拉伸和压缩条件下都表现出优异的机械性能，远远优于迄今为止报道的其他 Ti-6Al-4V 合金及其复合材料。因此，这种创新方法为在结构应用中制备高性能金属合金提供了一种简单而经济的方法。