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 Laboratory (AMES), Ames, IA (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 1925143
- Patent Number(s):
- 11453937
- Application Number:
- 16/974,116
- Assignee:
- Iowa State University Research Foundation, Inc. (Ames, IA)
- Patent Classifications (CPCs):
-
C - CHEMISTRY C22 - METALLURGY C22C - ALLOYS
C - CHEMISTRY C22 - METALLURGY C22F - CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- DOE Contract Number:
- AC02-07CH11358
- Resource Type:
- Patent
- Resource Relation:
- Patent File Date: 10/05/2020
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Anderson, Iver E., Hamilton White, Emma Marie, 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., 2022.
Web.
Anderson, Iver E., Hamilton White, Emma Marie, 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., Hamilton White, Emma Marie, 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/1925143.
@article{osti_1925143,
title = {Solid state grain alignment of permanent magnets in near-final shape},
author = {Anderson, Iver E. and Hamilton White, Emma Marie 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 = {2022},
month = {9}
}
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