Share Email Print

Proceedings Paper

Metallurgical and shape memory characteristics of grain-refined Cu-Zn-Al shape memory alloys
Author(s): V. Sampath; A. Murugaiyan; Srinivasan M. Sivakumar
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Copper-based shape memory alloys (SMAs) are prone for grain growth during thermomechanical and betatising treatments. The grain growth of the alloy leads to intergranular cracking on quenching to form martensite in the alloy, which in turn leads to poor mechanical properties including corrosion resistance of the alloy. In the present work, grain refinement of a CuZnAl shape memory alloy was done by adding 0.2 to 0.4 wt% of zirconium, titanium and boron as grain refiners. The effect of these additions on the microstructure and shape memory properties of the alloys were studied. The results show that the Zr and Ti additions reduce the grain size from 1.5 mm to 200 μm and 500 μm, repectively. The Zr-added alloy shows good strain recovery and corrosion resistance compared with the alloy in the other conditions.

Paper Details

Date Published: 14 October 2003
PDF: 7 pages
Proc. SPIE 5062, Smart Materials, Structures, and Systems, (14 October 2003); doi: 10.1117/12.514737
Show Author Affiliations
V. Sampath, Indian Institute of Technology, Madras (India)
A. Murugaiyan, Indian Institute of Technology, Madras (India)
Srinivasan M. Sivakumar, Indian Institute of Technology, Madras (India)

Published in SPIE Proceedings Vol. 5062:
Smart Materials, Structures, and Systems
S. Mohan; B. Dattaguru; S. Gopalakrishnan, Editor(s)

© SPIE. Terms of Use
Back to Top