Bimorphic microstructure in Ti-6Al-4V alloy manipulated by spark plasma sintering and in-situ press forging
Bimorphic microstructure in Ti-6Al-4V alloy manipulated by spark plasma sintering and in-situ press forging
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DOI：
10.1016/j.scriptamat.2020.10.035
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发表时间：
2021-03
影响因子：
6
通讯作者：
L. Kang;Y. Cai;Xubiao Luo;Zhi Li;X. B. Liu;Z. Wang;Yuda Li;C. Yang
中科院分区：
文献类型：
--
作者：
L. Kang;Y. Cai;Xubiao Luo;Zhi Li;X. B. Liu;Z. Wang;Yuda Li;C. Yang
我们报道了一种粉末烧结和原位锻造的方法，该方法可用于在Ti-6Al-4V合金中操纵一种新的双相组织。显微组织为典型的三角形团簇，团簇内有超细片层α和β，团簇边缘有超细等轴α、弥散分布的纳米/超细β以及α/β界面层。令人惊讶的是，双晶合金在拉伸和压缩条件下均表现出优异的机械性能，远远优于迄今报道的其他Ti-6Al-4V合金及其复合材料。因此，这种创新的方法为在结构应用中制备高性能金属合金提供了简单而经济的方法。
We report on a methodology of powder sintering andin-situpress 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 interfaceLlayers. 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.