Evidence for martensiticlike phase transformations in metallic glasses

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Abstract
Reversible and irreversible transformations have been studied in a large group of metallic glasses at temperatures well below the glass transition temperature. It is suggested here that reversible transformations consist of martensiticlike phase transformations that take place in clusters of atoms displaying a well-defined local order. The irreversible process may be caused by the rearrangement of interstitial atoms in more favorable positions during the reversible transformation. It was observed that the sample quenching conditions as well as the percentage of the constituent metalloid had an important influence on the transformation.