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Magnetostriction and Crystallographic Texture in Rolled and Annealed Fe-Ga Based Alloys

Published online by Cambridge University Press:  01 February 2011

Suok-Min Na  and
Alison B. Flatau
Suok-Min Na
Affiliation:
[email protected], University of Maryland, Aerospace Engineering, 3181 Glenn L. Martin Hall, College Park, Maryland, 20742, United States, 301-405-1131, 301-314-9001
Alison B. Flatau
Affiliation:
[email protected], University of Maryland, Aerospace Engineering, United States
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Abstract

Results that demonstrate the selective development of {100}<001> preferred texture in polycrystalline Fe81.3Ga18.7 plus B (0.5∼1.0 at.%) and S (∼0.05 at.%) alloys using a conventional rolling and annealing processes are presented in this work. We found that boron improved ductility by enhancing grain boundary cohesion during rolling and sulfur played an important role in controlling the surface energy and formation of the selective growth of {100} grains during annealing. The as-rolled (Fe81.3Ga18.7)+0.5 at.%B+0.005 at.%S sheet had some {100}<011> and near {111}<011> texture corresponding to α-fiber texture parallel to the rolling direction. The near {100}<001> sheet texture was formed in sheet that was annealed at 1200°C for 2h (198 ppm), while the texture of sheet annealed at 1100°C for 4h (165 ppm) was closer to {110}<001>. The maximum observed magnetostriction of 220 ppm was obtained as a result of a double annealed, first at 1000°C for 6h and then at 1200°C for 1h, with the resultant texture closer to the ideal {100}<001> than the less desirable {100}<011>.

Keywords

magnetic propertiestextureannealing
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 888: Symposium V – Materials and Devices for Smart Systems II , 2005 , 0888-V06-10
Copyright
Copyright © Materials Research Society 2006

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References

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