Behavior of polycrystalline shape-memory materials

Kaushik Bhattacharya, Robert V. Kohn

Research output: Contribution to journalConference articlepeer-review


Shape-memory behavior is the ability of certain materials to recover, on heating, apparently plastic deformation sustained below a critical temperature. Some materials have good shape-memory behavior as single crystals but little or none as polycrystals, while others display good shape-memory behavior even as polycrystals. We propose a method for explaining the difference. Our analysis involves the texture of the polycrystal and the character of the underlying martensitic phase transformation. It makes use of a constant strain hypothesis' analogous to that introduced by Taylor for polycrystalline plasticity. We also discuss the validity of the constant strain hypothesis.

Original languageEnglish (US)
Pages (from-to)1-9
Number of pages9
JournalAmerican Society of Mechanical Engineers, Applied Mechanics Division, AMD
StatePublished - 1994
EventProceedings of the 1994 International Mechanical Engineering Congress and Exposition - Chicago, IL, USA
Duration: Nov 6 1994Nov 11 1994

ASJC Scopus subject areas

  • Mechanical Engineering


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