点击次数：

论文类型：会议论文

发表时间：2012-07-13

收录刊物：Scopus、SCIE、CPCI-S、EI

卷号：747-748

页面范围：885-+

关键字：beta-Ti alloys; Composition design; Cluster-plus-glue-atom model; Young's modulus; Structural stability

摘要：[(Mo,Sn)(Ti,Zr)(14)]Nb-1 serial alloy compositions were designed using a cluster-plus-glue-atom model to receive BCC beta -Ti alloys with low Young's modulus (E) in Ti-based multi-component systems, where the square brackets enclose the coordination polyhedron cluster CN14 of the BCC structure and Nb is the glue atom. These serial alloys were prepared into rods with a diameter of 6 mm by copper-mould suction casting method. XRD and tensile test results indicated that all these alloy series possessed a monolithic BCC structure except [SnTi14]Nb-1 and [(Mo0.5Sn0.5)Ti-14]Nb-1 due to Sn deteriorating BCC structural stability. A combination of Mo0.5Sn0.5 at the cluster center, as well as low-E Nb and Zr in the glue and cluster shell respectively, can reach simultaneously low E and high BCC stability, incarnated in the [(Mo0.5Sn0.5)(Ti13Zr)]Nb-1 alloy which has the lowest E of 48 GPa in the suction-cast state.