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Pseudoelasticity and the strain-memory effect in an Ag-45 at. pct Cd alloy

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Abstract

A study has been made of pseudoelasticity and the strain-memory effect in βAg-Cd alloys having a low temperature martensitic transformation. Tests on single crystals showed that maximum pseudoelasticity occurred in specimens with the tensile axis oriented close to 〈001〉β at temperatures 20° to 50°C aboveM s. The habit plane for stress-induced martensite (SIM) was found experimentally to be ~(155)β and agreed well with a value obtained from the phenomenological theory assuming a (110) [110 ]β lattice-invariant shear. It is suggested that the macroscopic shear accompanying the transformation gives rise to the pseudoelastic strains, agreement with the experimental strain values being satisfactory. The strain-memory effect was explained as being due to a change from the (011) [011 ]β lattice-invariant shear associated with thermal martensite to the (110) [110]β shear associated with SIM.

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Authors and Affiliations

  1. Department Metaalkunde, Katholieke Universiteit, Leuven, Belgium

    R. V. Krishnan (Research Assistant)

  2. Department of Metallurgy, University of British Columbia, Vancouver, Canada

    L. C. Brown (Associate Professor)

Authors
  1. R. V. Krishnan
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  2. L. C. Brown
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This paper is based upon a thesis submitted by

This paper is based upon a thesis submitted by

This paper is based upon a thesis submitted by

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Krishnan, R.V., Brown, L.C. Pseudoelasticity and the strain-memory effect in an Ag-45 at. pct Cd alloy. Metall Trans 4, 423–429 (1973). https://doi.org/10.1007/BF02648694

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  • DOI: https://doi.org/10.1007/BF02648694

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