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Heat treatment of YuNDK3 5T5 Alloys

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We investigated the effect of the cooling rate from 900 to 600° and high-temperature magnetic tempering at 790–830° on the magnetic properties of YuNDK35T5 alloys.

It was found that the magnetic properties remain substantially unchanged with changes of the cooling rate from 2.1 to 0.73 deg/sec. The optimal temperature and time of high-temperature magnetic tempering coincide with those of ITMT in a lead bath.

Cooling in magnetic field at rates of 2.1–0.73 deg/sec with subsequent high-temperature magnetic tempering at 810° for 12 min and two-stage tempering at 650° for 6 h+550° for 24 h makes it possible to obtain the following magnetic properties of alloys YuNDK35T5 and YuNDK35T5BA without use of a lead bath; Br=9250 G and 11,300 G; Hc=1470 Oe and 1410 Oe; (BH)max=5.5·106 G-Oe and 11.2·106 G-Oe.

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Literature cited

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    B. G. Livshits, Zh. Tekh. Fiz.,10, 23–24, 1981 (1940).

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    W. Wright, Cobalt, 48, 115 (1970).

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    L. A. Kovalerova, Trudy VNII Elektroizmeritel'nykh Priborov, 2 (6) (1969).

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    C. Bronner et al., Cobalt, 46, 15 (1970).

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Additional information

Moscow Institute of Steel and Alloys. Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 8, pp. 30–33, August, 1973.

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Livshits, B.G., Samarin, B.A. & Shubakov, V.S. Heat treatment of YuNDK3 5T5 Alloys. Met Sci Heat Treat 15, 668–670 (1973). https://doi.org/10.1007/BF00654761

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  • Magnetic Field
  • Heat Treatment
  • Magnetic Property
  • Cool Rate
  • Magnetic Tempering