Causes of reversible changes in the coercivity of alloys for permanent magnets as a result of cyclic heat treatment are analyzed. The magnetic properties and the metallographic and magnetic domain structures of alloy Sm(Co0.65Fe0.26Cu0.07Zr0.02)7 are studied as a function of the temperature of interruption of the process cooling. The own results and data of foreign authors are used for developing a scheme of the processes occurring in the alloy in order to explain the mechanism of the “damage – restoration” phenomenon in alloys of the Sm – Co – Cu – Fe – Zr system of type Sm(Co0.65Fe0.26Cu0.07Zr0.02)7.
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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 8, pp. 4 – 8, August, 2018.
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Lileev, A.S., Pinkas, V.V., Voronchikhina, K.V. et al. Reversible Changes of Coercive Force in Sm – Co – Cu – Fe – Zr Alloy for Permanent Magnets Under Cyclic Heat Treatment. Met Sci Heat Treat 60, 489–493 (2018). https://doi.org/10.1007/s11041-018-0306-2
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DOI: https://doi.org/10.1007/s11041-018-0306-2