Local orientation change inside lenticular martensite plate in Fe-33Ni alloy

The orientation relationship of lenticular martensite (M) with respect to austenite (A) is nearly Greninger-Troiano at the midrib and twinned region but gradually deviates towards Kurdjumov-Sachs near the M/A interface. This change is related to the change in the substructure of martensite and also to the deformation in the surrounding austenite. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.