抄録
The magnetic field effect on the α–γ transformation of hypoeutectoid steels (Fe-0.1wt.%C, Fe-0.23wt.%C, and Fe-0.47wt.%C) were investigated by differential thermal analysis under high magnetic fields B up to 26 T. The magnetic field effects for the transformation temperatures A1 (αFe + Fe3C → α-Fe + γ-Fe) and A3 (α-Fe + γ-Fe → γ-Fe) were different from each other. The increment of A1 induced by the magnetic field was independent from the carbon concentration. A1 increased linearly for the magnetic field for B < 10 T, whereas A1 increased quadratically for B > 20 T. A3 for Fe-0.23 wt.%C increased quadratically against B. When the magnetic field of 26 T was applied, A1 and A3 for Fe-0.47wt.%C increased 35 K and 53 K, respectively. The magnetic field effects for the A1 and A3 are discussed on the basis of the gain of Zeeman energy for α-Fe.
https://ror.org/01dq60k83 