{225}γ habit planes in martensitic steels: from the PTMC to a continuous model

Annick P Baur; Cyril Cayron; Roland E Logé

doi:10.1038/srep40938

{225}_γ habit planes in martensitic steels: from the PTMC to a continuous model

Sci Rep. 2017 Jan 20:7:40938. doi: 10.1038/srep40938.

Authors

Annick P Baur¹, Cyril Cayron¹, Roland E Logé¹

Affiliation

¹ Laboratory of Thermomechanical Metallurgy, PX Group Chair, Ecole Polytechnique Fédérale de Lausanne, 2002 Neuchâtel, Switzerland.

Abstract

Fine twinned microstructures with {225}_γ habit planes are commonly observed in martensitic steels. The present study shows that an equibalanced combination of twin-related variants associated to the Kurdjumov-Sachs orientation relationship is equivalent to the Bowles and Mackenzie's version of the PTMC for this specific {225}_γ case. The distortion associated to the Kurdjumov-Sachs orientation relationship results from a continuous modeling of the FCC-BCC transformation. Thus, for the first time, an atomic path can be associated to the PTMC.

Publication types

Research Support, Non-U.S. Gov't