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Training effect in Fe-Mn-Si shape-memory alloys

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Abstract

The training effect in Fe-Mn-Si shape-memory alloys has been examined by length change and electrical resistivity measurements. After 13 deformation-heating cycles, it was found that the major recovery took place at a temperature lower by 30 K than the first cycle. Simple thermal cycling also lowered the starting temperature of the reverse transformation and increased the finishing temperature. At the same time, the martensitic transformation temperature was found to increase significantly, for example by 35 K, at the 14th thermal cycle. The characteristics of shape-memory effect affected by development of the homogeneous and fine deformation structure by the thermal cycling are discussed in the light of the training effect.

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Author notes

  1. Y. Watanabe

    Present address: Department of Metallurgical Engineering, Hokkaido University, Kita-ku, Sapporo, 060, Hokkaido, Japan

Authors and Affiliations

  1. Department of Materials Science and Engineering, Tokyo Institute of Technology, 4259 Nagatsuta, Midori-ku, 227, Yokohama, Japan

    Y. Watanabe, Y. Mori & A. Sato

Authors
  1. Y. Watanabe
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  2. Y. Mori
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  3. A. Sato
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Watanabe, Y., Mori, Y. & Sato, A. Training effect in Fe-Mn-Si shape-memory alloys. Journal of Materials Science 28, 1509–1514 (1993). https://doi.org/10.1007/BF00363341

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  • DOI: https://doi.org/10.1007/BF00363341

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