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MiS Preprint
81/2003

Symmetry and reversibility of martensitic transformations

Kaushik Bhattacharya, Sergio Conti, Giovanni Zanzotto and Johannes Zimmer

Abstract

Martensitic phase transformations observed in many crystalline solids are of interest for a variety of technological and scientific reasons. They come in two widely different classes. In steels, the transformation microstructure induced by quenching (fast cooling) remains essentially unchanged upon subsequent loading or heating. The transformation is not reversible. In shape-memory alloys, on the contrary, the microstructures formed on cooling are easily manipulated by loads and disappear upon reheating. The transformation is reversible or `thermoelastic'. This paper provides a simple explanation for this difference on the basis of crystal symmetry.

Received:
Sep 3, 2003
Published:
Sep 3, 2003

Related publications

inJournal
2004 Repository Open Access
Kaushik Bhattacharya, Sergio Conti, Giovanni Zanzotto and Johannes Zimmer

Crystal symmetry and the reversibility of Martensitic transformations

In: Nature, 428 (2004) 6978, pp. 55-59