Conclusions
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1.
The optimum magnetic properties for relay steel may be obtained by annealing initially oxidized specimens (components) in a vacuum. This is controlled by a procedure involving totally sequential decarburization and denitriding processes.
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2.
Annealing relay steel specimens (components) in dry and moist atmospheres cannot always prevent aging.
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Additional information
Central Institute for Ferrous Metallurgy, Cheropovets Integrated Metallurgical Works, Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 10, pp. 2–4, October, 1991.
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Semenchenko, G.V., Saltykov, G.P., Zinchenko, S.D. et al. Finishing heat treatment for relay steel. Met Sci Heat Treat 33, 715–718 (1991). https://doi.org/10.1007/BF00800685
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DOI: https://doi.org/10.1007/BF00800685