Effect of Magnetic Field on γ-α Transformation Temperature in Fe-Co Alloys
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Effect of magnetic field on γ (austenite)↔α (ferrite) transformation temperatures in Fe–<i>x</i>Co alloys with <i>x</i>=10, 20, 30 at% has been studied. Following results are obtained: (i) both the γ→α and α→γ transformation start temperatures increase with increasing magnetic field; (ii) the equilibrium temperature <i>T</i><sub>0</sub>, which is estimated as the average of the γ→α and α→γ transformation temperatures, is almost proportional to magnetic field for the Fe–20Co and Fe–30Co alloys, while it is almost proportional to square of magnetic field for the Fe–10Co alloy; (iii) <i>T</i><sub>0</sub> increases by about 18 K for Fe–10Co alloy, 24 K for Fe–20Co alloy and 20 K for Fe–30Co alloy when a magnetic field of 10 T is applied. The results are discussed on the basis of the Clausius–Clapeyron equation.
- Transactions of the Iron and Steel Institute of Japan
Transactions of the Iron and Steel Institute of Japan 46(9), 1267-1270, 2006-09-15
The Iron and Steel Institute of Japan