Conclusions
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1.
The critical solidification temperatures — liquidus and solidus — for the alloys Kh23K15YuBF, Kh30K22YuF, and Kh35K23MChYu are 1458±6 and 1415±10°C, 1456±6°C and 1410±10°C, 1440±6°C and 1400±10°C, respectively, the crystallization interval is 40–46°C.
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2.
Upon cooling, exothermic phase transformations occur in the solidifying alloys in the temperature intervals 1075–1030°C and 720–650°C, accompanied by the liberation of heat.
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3.
The full linear shrinkage of the alloys is 2.15–2.34%, preshrinkage expansion is 0.05–0.17%.
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Literature cited
H. Kaneko et al., “New permanent ductile magnet of Fe-Cr-Co system”, ATP Conf. Proc. “Magnetism and Magnetic Materials”,2, No. 5, 1088 (1972).
V. Ya. Bilyk et al., The Theoretical Foundations of Metal Casting. Laboratory Works of the Kalinin Leningrad Polytechnic Institute [in Russian], Izdatel'stvo, “Laboratoriya Poligraficheskikh Mashin Leningradskogo Ordena Lenina Politekhnicheskogo Instituta im. M. I. Kalinina”, Leningrad (1971), p. 100.
L. M. Magat et al., “Structural transformation and magnetic properties of the highly coercive Fe-Co-Cr-base alloy”, Fiz. Met. Metalloved.,40, No. 1, 254 (1975).
Additional information
Production Association “Magnit.” Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 9, pp. 56–58, September, 1982.
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Frolov, M.M., Ivanov, V.P. & Mironov, G.P. Critical solidification temperatures and linear shrinkage of magnetically hard Fe-Cr-Co-base alloys. Met Sci Heat Treat 24, 665–668 (1982). https://doi.org/10.1007/BF00769332
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DOI: https://doi.org/10.1007/BF00769332