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Metal Science and Heat Treatment

, Volume 22, Issue 1, pp 53–56 | Cite as

Effect of purity on the magnetic properties of alloy 79NM

  • T. I. Shcherbakova
  • M. B. Tsar'kova
  • B. N. Putimtsev
Precision Steels and Alloys

Conclusions

  1. 1.

    Increasing the cooling rate in the ordering range to 2·103 deg/h improves the magnetic properties of alloy 79NM.

     
  2. 2.

    The development of cubic texture during recrystallization leads to lower magnetic permeability and squareness factor.

     
  3. 3.

    An increase in the original purity of the material leads to accelerated recrystallization, lowers the temperature threshold of secondary recrystallization, and makes it possible to obtain higher mechanical properties at annealing temperatures not exceeding 1100°.

     
  4. 4.

    Secondary recrystallization impairs the magnetic characteristics of alloy 79NM with an isotropic structure, particularly in the high-purity metal.

     
  5. 5.

    Magnetic properties comparable with the properties of the EBR heat can be obtained in the alloy with a high concentration of thermodynamically unstable nonmetallic inclusions by raising the annealing temperature.

     

Keywords

Permeability Mechanical Property Recrystallization Magnetic Property Cool Rate 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Literature cited

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    I. M. Puzei, "Crystallographic magnetic anisotropy of ferromagnetic alloys," in: Precision Alloys [in Russian], No. 2, Metallurgiya, Moscow (1975), p. 99.Google Scholar
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    I. M. Puzei, "The constant of magnetic anisotropy in Permalloys," Izv. Akad. Nauk SSSR, Ser. Fiz.,16, No. 5, 549 (1952).Google Scholar
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    Yu. V. Starostin and M. M. Borodkina, "Role of structural factors in the magnetic properties of thin strips of Fe−Ni−Mo alloys," Magnetic Anisotropy [in Russian], Dep. No. 1226.Google Scholar
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    Yu. M. Gertman, N. F. Dubrov, and Yu. V. Pimenov, "Anisotropy of the magnetic properties of textured Permalloy 79NM," Fiz. Met. Metalloved.,29, No. 2, 29 (1967).Google Scholar
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    V. N. Veselkova, T. I. Shcherbakova, and V. V. Sosnin, "Effect of the annealing atmosphere on the magnetic properties and structure of alloys 50NP and 79NM," Metalloved. Term. Obrab. Met., No. 4, 45 (1979).Google Scholar
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    I. Thompson, Brit. J. Appl. Phys.,10, No. 12 (1959).Google Scholar

Copyright information

© Plenum Publishing Corporation 1980

Authors and Affiliations

  • T. I. Shcherbakova
  • M. B. Tsar'kova
  • B. N. Putimtsev

There are no affiliations available

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