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Title: Method of and apparatus for thermomagnetically processing a workpiece

Abstract

A method of thermomagnetically processing a material includes disposing a workpiece within a bore of a magnet; exposing the workpiece to a magnetic field of at least about 1 Tesla generated by the magnet; and, while exposing the workpiece to the magnetic field, applying heat energy to the workpiece at a plurality of frequencies to achieve spatially-controlled heating of the workpiece. An apparatus for thermomagnetically processing a material comprises: a high field strength magnet having a bore extending therethrough for insertion of a workpiece therein; and an energy source disposed adjacent to an entrance to the bore. The energy source is an emitter of variable frequency heat energy, and the bore comprises a waveguide for propagation of the variable frequency heat energy from the energy source to the workpiece.

Inventors:
; ; ; ;
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1150015
Patent Number(s):
8795444
Application Number:
14/186,385
Assignee:
UT-Battelle, LLC (Oak Ridge, TN)
Patent Classifications (CPCs):
C - CHEMISTRY C21 - METALLURGY OF IRON C21D - MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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DOE Contract Number:  
AC05-000R22725
Resource Type:
Patent
Resource Relation:
Patent File Date: 2014 Feb 21
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE

Citation Formats

Kisner, Roger A., Rios, Orlando, Wilgen, John B., Ludtka, Gerard M., and Ludtka, Gail M. Method of and apparatus for thermomagnetically processing a workpiece. United States: N. p., 2014. Web.
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Kisner, Roger A., Rios, Orlando, Wilgen, John B., Ludtka, Gerard M., & Ludtka, Gail M. Method of and apparatus for thermomagnetically processing a workpiece. United States.
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Kisner, Roger A., Rios, Orlando, Wilgen, John B., Ludtka, Gerard M., and Ludtka, Gail M. Tue . "Method of and apparatus for thermomagnetically processing a workpiece". United States. https://www.osti.gov/servlets/purl/1150015.
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@article{osti_1150015,
title = {Method of and apparatus for thermomagnetically processing a workpiece},
author = {Kisner, Roger A. and Rios, Orlando and Wilgen, John B. and Ludtka, Gerard M. and Ludtka, Gail M.},
abstractNote = {A method of thermomagnetically processing a material includes disposing a workpiece within a bore of a magnet; exposing the workpiece to a magnetic field of at least about 1 Tesla generated by the magnet; and, while exposing the workpiece to the magnetic field, applying heat energy to the workpiece at a plurality of frequencies to achieve spatially-controlled heating of the workpiece. An apparatus for thermomagnetically processing a material comprises: a high field strength magnet having a bore extending therethrough for insertion of a workpiece therein; and an energy source disposed adjacent to an entrance to the bore. The energy source is an emitter of variable frequency heat energy, and the bore comprises a waveguide for propagation of the variable frequency heat energy from the energy source to the workpiece.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2014},
month = {8}
}
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Works referenced in this record:

Using magnetic field gradients to control the directional solidification of alloys and the growth of single crystals
journal, September 2004

In situ evidence of enhanced transformation kinetics in a medium carbon steel due to a high magnetic field
journal, July 2004

The effect of high magnetic field on phase stability in Fe-Ni
journal, June 2004

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