Share Email Print
cover

Proceedings Paper

Ti-content dependence of shape memory characteristics of Ti-Ni-Cu alloy ribbons
Author(s): Jung-Min Nam; Hyun-gon Kim; Gyu-bong Cho; Yeon-wook Kim; Tae-hyun Nam
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

Transformation behavior, shape memory characteristics and superelasticity of Ti-(40-x)Ni-10Cu(at%)(x=0~2) alloy ribbons were investigated. All ribbons showed the two-stage B2-B19-B19' transformation behavior. The temperature gap between Ms'(the B2-B19 transformation start temperature) and Ms(the B19-B19' transformation start temperature) was large(~ 40 K), which was ascribed to internal stress fields around dislocations introduced by melt spinning. Ti2Ni particles were observed in Ti-39Ni-10Cu and Ti-38Ni-10Cu alloy ribbons, while they were not found in a Ti-40Ni-10Cu alloy ribbon. Volume fraction of Ti2Ni particles increased from 3 % to 12 % with increasing Ti-content from 51 at% to 52 at%. Both Ms and Ms' decreased with increasing Ti-content, which was ascribed to formations of Ti2Ni particles resulting in a decrease in Ti-content of matrix. Ti-(40-x)Ni-10Cu alloy ribbons showed perfect shape memory effect and superelasticity. The transformation hysteresis associated with the B2-B19 transformation was 6-10 K depending on Ti-content.

Paper Details

Date Published: 1 November 2007
PDF: 8 pages
Proc. SPIE 6423, International Conference on Smart Materials and Nanotechnology in Engineering, 64232K (1 November 2007); doi: 10.1117/12.779883
Show Author Affiliations
Jung-Min Nam, Gyeongsang National Univ. (South Korea)
Hyun-gon Kim, Gyeongsang National Univ. (South Korea)
Gyu-bong Cho, Gyeongsang National Univ. (South Korea)
Yeon-wook Kim, Keimyung Univ. (South Korea)
Tae-hyun Nam, Gyeongsang National Univ. (South Korea)


Published in SPIE Proceedings Vol. 6423:
International Conference on Smart Materials and Nanotechnology in Engineering

© SPIE. Terms of Use
Back to Top