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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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