The Usage of Hydroextrusion for Plastic Deformation of Magnetostrictive Iron-Gallium Alloys

Abstract:

For the first time hydroextrusion process was chosen for Fe-Ga ingots deformation with a gallium content of 19 and 20 at.%. The samples were annealed at 950oC, followed by air cooling. Structure of deformation and primary recrystallyzation were investigated by the method of electron back-scattered diffraction (EBSD). The degree of hydroextrusion deformation achieved was 28 – 42 %. There was not found any crystallographic texture at such degree of deformation. The value of magnetostriction in recrystallization sample was about 100 ppm. Available in literature methods and approaches to creation of the Fe-Ga samples from the point of view of receiving high magnetostriction and also a possibility of machining of the samples are discussed.

• Periodical: Materials Science Forum (Volume 946)
• Pages: 25-30
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.946.25
• Online since: February 2019
• Authors: I.V. Gervasyeva, V.A. Milyutin*, D.I. Davidov, Yulia V. Khlebnikova
• Keywords: Fe-Ga Alloys, Hydroextrusion, Magnetostriction, Structure

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