Structure of Low Cobalt Alloy for Permanent Magnets of Basis System Fe-Cr-Co at Complex Two-Level Loading in Isothermal Conditions

Abstract:

Results of experimental research into evolution of the structure and microhardness of the hard magnetic Fe-30Cr-8Co-0,7Ti-0,5V-0,7Si alloy during complex two-level loading (compression + torsion) in isothermal conditions at various temperatures in single-phase region are reported. It was revealed that the deformation leads to a strong refinement of initial coarse-grained structure in the whole volume of the sample, however the generated structure is non-uniform through the body of the sample. In an active zone of deformation, near to mobile head, there is a microcrystalline layer with a grain size of about 5 microns which thickness poorly depends on the formation. With removal from the active zone of deformation the grain size increases, and microhardness decreases.

• Periodical: Materials Science Forum (Volumes 539-543)
• Pages: 2928-2933
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.539-543.2928
• Online since: March 2007
• Authors: V.S. Yusupov, A.I. Milyaev, Galia F. Korznikova, Alexander V. Korznikov, J.K. Kovneristii
• Keywords: Complex Loading, Deformation, Hard Magnetic Alloy, Magnetic Property, Thermomagnetic Heat Treatment

References

[1] А.И. Миляев, Ю.В. Ковнеристый, С.П. Ефименко, Г.Ф. Корзникова: Физика и химия обработки материалов, №3 (2003), с. 86-88.

[2] Ю.В. Ковнеристый, С.П. Ефименко, Г.Ф. Корзникова, А.И. Миляев: Металловедение и термообработка металлов, №5 (2004), с. 15-17.

[3] О.А. Кайбышев, Р.А. Васин, В.К. Бердин, Р.М. Кашаев: Кузнечно-штамповое производство, № 4 (1999), с. 8-11.

[4] G.F. Korznikova, A.V. Korneva, Z. Pakiela, A.V. Korznikov: The Physics of Metals and Metallography. Vol. 94 (2002), Issue 2, pp.69-74.