Acta Metallurgica Sinica (English Letters) ›› 2001, Vol. 14 ›› Issue (2): 97-102 .

• Research Articles • Previous Articles     Next Articles

QUANTITATIVE CHARACTERIZATION OF STRESS-STRAIN HYSTERESIS LOOPS OF Cu-Zn-Al SHAPE MEMORY ALLOY

X.T. Zu, Y.F. Guo, Y.Z. Huo   

  1. Department of Metal Materials, Sichuan University, Chengdu 610065, China
  • Received:2000-11-06 Revised:2001-06-06 Online:2001-04-25 Published:2009-10-10
  • Contact: X.T. Zu

Abstract: A six-parameter mathematical model was introduced to simulate the stress-strain hysteresis and the inner hysteresis of polycrystalline shape memory alloys (SMAs). By comparing with experiments of Cu-Zn-Al SMA, it was shown that the model could be used to calculate the stress-strain relations with rather good accuracy. Moreover,it was found that the six parameters introduced in this paper represented the characteristics of the stress-strain hysteresis of polycrystalline SMA and can be used to characterize the hysteresis quantitatively.

Key words: shape memory alloy (SMA), hysteresis, quantitative characterization, numerical simulation