The Effect of Aging Temperature on Morphology of α Phase in Ti-3Mo-6Sn-5Zr Shape Memory Alloy. (2015)

• Record Type: Journal Article
• Authors: Endoh, K.; Tahara, M.; Inamura, T.; Kim, H.Y.; Hosoda, H.; Miyazaki, S.
• Is Part Of: Materials today. Volume 2(2015)Supplement 3
• Page Start: S817
• Page End: S820
• Publication Date: 2015
• Subjects: β-Ti alloy; Materials science -- Congresses -- Periodicals; 620.1
• DOI: 10.1016/j.matpr.2015.07.407
• Languages: English
• ISSNs: 2214-7853

Abstract

Abstract: The effect of the aging temperature on the morphology of the α (hcp) phase in a Ti-3Mo-6Sn-5Zr (mol%), Ni-free biomedical shape memory alloy was investigated. Plate shaped α phase precipitated during aging at temperatures between 773 K and 973 K for 3.6 ks. The typical acicular morphology that is cross section of α plates was observed in the specimens aged at 773 K and 873 K, whereas the plate of α phase formed a unique triangular shaped cluster in the specimen aged at 973 K. The individual α plates in the triangular cluster were relatively finer than those in the other specimens and the triangular clusters were homogeneously dispersed within β grain. The c/a ratio of α phase increased with increasing the aging temperature, where c and a are the lattice parameters of α phase. The aging temperature dependence of the c/a ratio is suggested to be responsible for the aging temperature dependence of the morphology of α phase.