Method for producing low hysteresis TiNiX shape memory alloys

Zhiyong Jerry Zhang, Richard D James

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The size of the hysteresis measured during temperature-induced or stress-induced transformation is a critical parameter governing many applications, such as actuators and medical devices. A set of criteria governing the hysteresis of shape memory materials (SMAs) is derived from the Geometrically Nonlinear Theory of Martensitic Transformations. The theory indicates that alloys with lattice parameters satisfying these criteria will have the smallest hysteresis. A systematic experimental program on the TiNiX (X = Cu, Pd, Pt, Au, Hf, Zr) system is conducted to search for the alloys satisfying the proposed criteria. The ranges of composition in the TiNiX alloys with special lattice parameters are located, and the relation between the lattice parameters and hysteresis predicted by the theory is verified. The results of this experimental study show that the criteria are excellent guides for the development of shape memory alloys with low hysteresis and also long fatigue life.

Original languageEnglish (US)
Title of host publicationSMST-2006 - Proceedings of the International Conference on Shape Memory and Superelastic Technologies
Pages777-786
Number of pages10
DOIs
StatePublished - Dec 1 2008
EventInternational Conference on Shape Memory and Superelastic Technologies, SMST-2006 - Pacific Grove, CA, United States
Duration: May 7 2006May 11 2006

Other

OtherInternational Conference on Shape Memory and Superelastic Technologies, SMST-2006
CountryUnited States
CityPacific Grove, CA
Period5/7/065/11/06

Fingerprint

Shape memory effect
Hysteresis
Lattice constants
Martensitic transformations
Actuators
Fatigue of materials
Chemical analysis
Temperature

Keywords

  • Crack
  • Fatigue
  • Hysteresis
  • Nitinol
  • Shape memory alloys
  • Special lattice parameters
  • TiNi

Cite this

Zhang, Z. J., & James, R. D. (2008). Method for producing low hysteresis TiNiX shape memory alloys. In SMST-2006 - Proceedings of the International Conference on Shape Memory and Superelastic Technologies (pp. 777-786) https://doi.org/10.1361/cp2006smst777

Method for producing low hysteresis TiNiX shape memory alloys. / Zhang, Zhiyong Jerry; James, Richard D.

SMST-2006 - Proceedings of the International Conference on Shape Memory and Superelastic Technologies. 2008. p. 777-786.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Zhang, ZJ & James, RD 2008, Method for producing low hysteresis TiNiX shape memory alloys. in SMST-2006 - Proceedings of the International Conference on Shape Memory and Superelastic Technologies. pp. 777-786, International Conference on Shape Memory and Superelastic Technologies, SMST-2006, Pacific Grove, CA, United States, 5/7/06. https://doi.org/10.1361/cp2006smst777
Zhang ZJ, James RD. Method for producing low hysteresis TiNiX shape memory alloys. In SMST-2006 - Proceedings of the International Conference on Shape Memory and Superelastic Technologies. 2008. p. 777-786 https://doi.org/10.1361/cp2006smst777
Zhang, Zhiyong Jerry ; James, Richard D. / Method for producing low hysteresis TiNiX shape memory alloys. SMST-2006 - Proceedings of the International Conference on Shape Memory and Superelastic Technologies. 2008. pp. 777-786
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