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Title: Solid state grain alignment of permanent magnets in near-final shape

Abstract

Magnet microstructure manipulation in the solid state by controlled application of a sufficient stress in a direction during high temperature annealing in a single-phase region of heat-treatable magnet alloys, e.g., alnico-type magnets is followed by magnetic annealing and draw annealing to improve coercivity and saturation magnetization properties. The solid-state process can be termed highly controlled abnormal grain growth (hereafter AGG) and will make aligned sintered anisotropic magnets that meet or exceed the magnetic properties of cast versions of the same alloy types.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Ames Lab., Ames, IA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1771685
Patent Number(s):
10851446
Application Number:
15/530,951
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Classifications (CPCs):
C - CHEMISTRY C22 - METALLURGY C22F - CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
DOE Contract Number:  
AC02-07CH11358
Resource Type:
Patent
Resource Relation:
Patent File Date: 03/28/2017
Country of Publication:
United States
Language:
English

Citation Formats

Anderson, Iver E., White, Emma Marie Hamilton, Kramer, Matthew J., Kassen, Aaron G., and Dennis, Kevin W. Solid state grain alignment of permanent magnets in near-final shape. United States: N. p., 2020. Web.
Anderson, Iver E., White, Emma Marie Hamilton, Kramer, Matthew J., Kassen, Aaron G., & Dennis, Kevin W. Solid state grain alignment of permanent magnets in near-final shape. United States.
Anderson, Iver E., White, Emma Marie Hamilton, Kramer, Matthew J., Kassen, Aaron G., and Dennis, Kevin W. Tue . "Solid state grain alignment of permanent magnets in near-final shape". United States. https://www.osti.gov/servlets/purl/1771685.
@article{osti_1771685,
title = {Solid state grain alignment of permanent magnets in near-final shape},
author = {Anderson, Iver E. and White, Emma Marie Hamilton and Kramer, Matthew J. and Kassen, Aaron G. and Dennis, Kevin W.},
abstractNote = {Magnet microstructure manipulation in the solid state by controlled application of a sufficient stress in a direction during high temperature annealing in a single-phase region of heat-treatable magnet alloys, e.g., alnico-type magnets is followed by magnetic annealing and draw annealing to improve coercivity and saturation magnetization properties. The solid-state process can be termed highly controlled abnormal grain growth (hereafter AGG) and will make aligned sintered anisotropic magnets that meet or exceed the magnetic properties of cast versions of the same alloy types.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2020},
month = {12}
}

Works referenced in this record:

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