The surface performance of shot peened and ion implanted NiTi shape memory alloy
- Univ. of Nottingham (United Kingdom). Dept. of Materials Engineering and Materials Design
Equiatomic NiTi shape memory alloy in austenitic and martensitic forms has been modified by shot peening with glass media and by N{sup +} ion implantation. The effect upon microstructure, surface hardness and coefficient of friction was measured, along with the effect of the two treatments upon the shape memory behavior. Examination using transmission electron microscopy (TEM) showed amorphous regions within the surfaces treated by both peening and ion implantation. In addition, peened and ion implanted samples showed similar increases in surface hardness and reduced surface friction coefficient. Differential scanning calorimetry showed that both surface treatments had no effect upon the bulk shape memory phase transformation behavior.
- OSTI ID:
- 31723
- Journal Information:
- Acta Metallurgica et Materialia, Vol. 43, Issue 3; Other Information: PBD: Mar 1995
- Country of Publication:
- United States
- Language:
- English
Similar Records
Two-way shape memory effect developed by martensite deformation in NiTi
Effects of hafnium, heat treatment and cycling under an applied stress on the transformations of cold worked NiTi-based shape memory alloys