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{225}γ habit planes in martensitic steels: from the PTMC to a continuous model
Annick P Baur1, Cyril Cayron1, Roland E Logé1
1Laboratory 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.
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