Indentation in Shape Memory Alloys
Research on shape memory alloys (SMAs) has been broadly active since the discovery of shape memory in the compound NiTi in 1963, a decade after first reports of the effect in Au-Cd. For general reviews, see [1-4]. Early work on NiTi-based SMAs (primarily NiTi, and NiTiX, where X = Pt, Pd, Au, Cu, Hf, Zr, or Nb, and others) led to applications such as the NiTi hydraulic tube couplings developed by the Raychem Corporation. Today, a wide variety of new ideas have emerged [1-5] for applications such as sensors, actuators, damping materials, MEMS, biomedical devices, and hydro/aerodynamic control at surfaces. A noticeable resurgence of interest in SMAs has occurred, largely in response to recent advances in alloy preparation techniques (including physical vapor deposition routes), machining and joining technologies, and modeling capabilities.
It is well known that NiTi alloys can exhibit either the shape memory effect (SME) or the superelastic effect (SE, often called...
KeywordsShape Memory Indentation Depth Shape Memory Effect Spherical Indentation Recovery Ratio
We would like to thank former Ph.D. students, Drs. Wangyang Ni and Yijun Zhang, for their contributions to some of the work reviewed in this chapter. We would also like to thank the U.S. National Science Foundation for partial support of this work under SGER Contract No. CMS0336810 and GOALI Contract No. CMS0510294.
- 1.1. Otsuka K, Wayman CM (1998) Shape Memory Alloys. Cambridge University Press, CambridgeGoogle Scholar
- 2.2. Duerig T, Melton KN, Stockel D, Wayman CM (1990) Engineering Aspect of Shape Memory Alloys. Butterworth-heinemann, BostonGoogle Scholar
- 4.4. Wayman CM (1993) MRS Bull. 18:49Google Scholar
- 5.5. Rice C (2002) In: Schwartz M (ed) Encyclopedia of Smart Materials. Wiley, New York, pp. 921–936Google Scholar
- 33.33. Johnson KL (1987) Contact Mechanics. Cambridge University Press, CambridgeGoogle Scholar