The solubility limits of Be, Ti, Mo, W, P and Sb in bcc Fe and of Al, Ti, Mo and W in fcc Co were measured by X-ray diffraction and micro-probe analysis. It has been found that the solubilities in ferromagnetic regions are much smaller than those expected from the paramagnetic regions, especially in the case where the alloying element lowers the Curie temperature effectively. These solubility data have been analyzed thermodynamically, taking into account the effect of magnetic transition on the free energy of bcc Fe and fcc Co solid solutions.
(Received September 25, 1980)
*This paper was originally published in Japanese in J. Japan Inst. Metals, 43 (1979), 118 and 45 (1981), 341.
**Department of Materials Science, Faculty of Engineering, Tohoku University, Sendai 980, Japan.
***Graduate School, Tohoku University, Sendai 980, Japan.
© 2002 The Japan Institute of Metals
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