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Thermal characteristics of a nitinol heat engine

Journal Article


Abstract


  • Temperature profiles in the nitinol working elements of a simple rocking shape-memory engine have been measured and attributed to the heat transfer characteristics of the system. The temperature extremes evidently lie between the reverse transformation temperatures As and Af for the constrained wires, indicating that the device functions under the driving force generated by stress-induced formation (and reversion during heating) of a small volume fraction of martensite. Metallographic observations of relief effects associated with changes in the microstructure of wires simulating the working elements are consistent with this hypothesis. © 1986 Chapman and Hall Ltd.

Publication Date


  • 1986

Citation


  • Dunstan, P. S., Kennon, N. F., Middleton, L. A., & Dunne, D. P. (1986). Thermal characteristics of a nitinol heat engine. Journal of Materials Science, 21(5), 1637-1641. doi:10.1007/BF01114719

Scopus Eid


  • 2-s2.0-0022712903

Web Of Science Accession Number


Start Page


  • 1637

End Page


  • 1641

Volume


  • 21

Issue


  • 5

Abstract


  • Temperature profiles in the nitinol working elements of a simple rocking shape-memory engine have been measured and attributed to the heat transfer characteristics of the system. The temperature extremes evidently lie between the reverse transformation temperatures As and Af for the constrained wires, indicating that the device functions under the driving force generated by stress-induced formation (and reversion during heating) of a small volume fraction of martensite. Metallographic observations of relief effects associated with changes in the microstructure of wires simulating the working elements are consistent with this hypothesis. © 1986 Chapman and Hall Ltd.

Publication Date


  • 1986

Citation


  • Dunstan, P. S., Kennon, N. F., Middleton, L. A., & Dunne, D. P. (1986). Thermal characteristics of a nitinol heat engine. Journal of Materials Science, 21(5), 1637-1641. doi:10.1007/BF01114719

Scopus Eid


  • 2-s2.0-0022712903

Web Of Science Accession Number


Start Page


  • 1637

End Page


  • 1641

Volume


  • 21

Issue


  • 5