Conclusions
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1.
The broadest single-phase region (quenching temperatures) for alloy YuNDK42T8 is attained after homogenizing at 1220°C for 1 h. Homogenizing has no effect on the optimal ITMT temperature (with quenching from the single-phase region) and no effect on the magnetic properties.
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2.
In YuNDK42T8 alloys with a specific chemical composition a peculiar structural component occurs—overheated phase—which is precipitated during solidification of the casting and during heating to quenching temperature in the process of ITMT. The data from microanalysis indicate that this component is enriched in titanium and impoverished in aluminum and iron. Its presence in the alloy impairs the magnetic and mechanical properties.
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Literature cited
A. Koch et al., Conference on Magnets and Magnetic Materials, Amer. Inst. Electr. Eng. (1957).
K. I. Vlaskina et al., Metal. i Term. Obrabotka Metal., No. 2 (1970).
Ya. M. Dovgalevskii, Fiz. Metal. Metalloved.,21 (1966).
Additional information
Saratov Polytechnical Institute. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 33–35, May, 1971.
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Vlaskina, K.I., Gladyshev, S.N., Kartashova, N.F. et al. Effect of homogenizing on the structure and properties of alloy YuNDK42T8. Met Sci Heat Treat 13, 380–382 (1971). https://doi.org/10.1007/BF00652440
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DOI: https://doi.org/10.1007/BF00652440