BCC/FCC martensitic transformation and thermoelasticity in Fe alloys

抄録

The martensitic transformation from the α (BCC) to γ (FCC) in Fe-Mn-Al and Fe-Mn-Al-Ni is thermodynamically analyzed based on the experiments of the specific heat measurements and by the CALPHAD method. In particular, we discuss the phase transformation in terms of the magnetic contribution to the phase stability. In addition, the role of the coherent nano-precipitates that bring about thermoelastic martensitic transformation is also discussed.