Nanostructured Shape Memory Alloys for Biomedical Applications

Koichi Tsuchiya; Qi Feng Cao; Akihide Hosokawa; Masayuki Katahira; Yoshikazu Todaka; Minoru Umemoto

doi:10.4028/www.scientific.net/MSF.539-543.505

Paper Titles

Effect of Mn Addition on the Mechanical Properties in Al-Cu-Li-Mg-Ag-Zr Alloys
p.481

Structure and Properties of AlMg3 Alloy with Sc and Zr
p.487

Structure Development during ECAP and Subsequent Creep of Aluminium
p.493

The Continuous Elimination of Inclusions in Molten Aluminum by Direct and Alternate Electromagnetic Force
p.499

Nanostructured Shape Memory Alloys for Biomedical Applications
p.505

Nanotechnology: Better Materials for All Implants
p.511

Cellular Activity and Biomaterial's Surface Topography
p.517

A Prototype Continuous Flow Polymerase Chain Reaction LTCC Device
p.523

Plasma and Electrospray Deposition to Improve the Biocompatibility of Stents
p.529

HomeMaterials Science ForumMaterials Science Forum Vols. 539-543Nanostructured Shape Memory Alloys for Biomedical...

Nanostructured Shape Memory Alloys for Biomedical Applications

Abstract:

Application of TiNi shape memory alloy in biomedical field is rapidly expanding. Some of the applications calls for non-conventional properties, which may require new methods of thermomechanical treatment and surface modification. In the present study, the effect of nanocrystallization/amorphization by various method of severe plastic deformation, such as, shot peening, cold rolling and high pressure torsion, was investigated on properties of TiNi shape memory alloys. Shot peening using iron based metallic glass media was found to be an effective method to obtain the amorphous surface. Surface amorphization improved the corrosion resistance. Nanocrystalline TiNi exhibited peculiar superelastic properties. Correlation between the microstructure and phase transformation in nanostructured TiNi was discussed.