from the conferences organized by TANGER Ltd.
The deformation-aging process developed by us for the alloy (wt.%) 16 Co - 33 Cr - 2 Cu - 0.5 Nb - Fe (balance) includes the (1) quenching from 1100 °C to form the single-phase α-solid solution, (2) aging resulting in the formation of spherical α1-phase precipitates during cooling in a temperature range of 650 - 625 °C at a rate of 40 °C/h; (3) monoaxial plastic deformation with the ε = 79 % reduction of area in order to give the shape anisotropy of α1-phase precipitates and to produce the mechanical texture, and (4) final controlled cooling from 605 °C to 540 °C at a rate of 8 °C /h, in the course of which the more complete compositional separation of strongly magnetic α1-phase and weakly magnetic α2-matrix precipitates is reached. The developed heat treatment allowed us to obtain the following magnetic characteristics of the Kh33K16D2B alloy: %& = 64-64.5 kA/m, Br = 1.02-1.1 T and (BH)max = 41.4 - 42.2 kJ/m3.
Keywords: PermKh33K16D2B alloy, heat treatment, plastic deformation, shape anisotropy, magnetic properties© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.