Superelastic properties of biomedical (Ti-Zr)-Mo-Sn alloys

Mater Sci Eng C Mater Biol Appl. 2015 Mar:48:11-20. doi: 10.1016/j.msec.2014.11.010. Epub 2014 Nov 7.

Abstract

A new class of Ti-50Zr base biomedical superelastic alloys was developed in this study. The (Ti-Zr)-Mo-Sn alloys exhibited a shape memory effect and superelastic property by adjusting Mo and Sn contents. The (Ti-Zr)-1.5Mo-3Sn alloy revealed the most stable superelasticity among (Ti-Zr)-(1-2)Mo-(2-4)Sn alloys. The superelastic recovery strain showed a strong dependence on heat treatment temperature after cold working in the (Ti-Zr)-1.5Mo-3Sn alloy. The superelastic recovery strain increased as the heat treatment temperature increased although the critical stress for slip decreased. The (Ti-Zr)-1.5Mo-3Sn alloy heat treated at 1073K exhibited excellent superelastic properties with a large recovery strain as large as 7% which is due to the strong {001}β<110>β recrystallization texture.

Keywords: Biomaterial; Martensitic transformation; Recrystallization texture; Superelasticity; Ti alloy.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Alloys / chemistry*
  • Biocompatible Materials / chemistry
  • Elasticity
  • Materials Testing
  • Microscopy, Electron, Scanning
  • Molybdenum / chemistry*
  • Temperature
  • Tin / chemistry*
  • Titanium / chemistry*
  • X-Ray Diffraction
  • Zirconium / chemistry*

Substances

  • Alloys
  • Biocompatible Materials
  • Tin
  • Molybdenum
  • Zirconium
  • Titanium