Large magnetostriction and structural characteristics of Fe83Ga17 wires

• Published in: Physica. B, Condensed matter Vol. 407; no. 8; pp. 1186 - 1190
• Main Authors: Li, J.H., Gao, X.X., Xie, J.X., Zhu, J., Bao, X.Q., Yu, R.B.
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier B.V 15.04.2012; Elsevier
• Subjects: Annealing; Condensed matter; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Fe-Ga alloy; Fibers; Magnetic properties and materials; Magnetomechanical and magnetoelectric effects, magnetostriction; Magnetostriction; Materials science; Microstructure; Modified-DO3 structure; Phase diagrams and microstructures developed by solidification and solid-solid phase transformations; Physics; Solidification; Surface layer; Texture; Wire; Wires; Magnetostriction; Wires; Fe-Ga alloy; Modified-DO3 structure; Texture; Drawing; Annealing; Directional solidification; Swaging; Iron alloys; Wire; Gallium alloys; Fabrication property relation; Heat treatments; structure; Modified-DO; Hot forming; Microstructure
• ISSN: 0921-4526; 1873-2135
• DOI: 10.1016/j.physb.2012.01.080

The columnar-grained structure induced by directional solidification was beneficial to improve the deformability of Fe83Ga17 alloy. Fe83Ga17 wires with diameter of 0.5∼0.9mm were prepared successfully by hot rotary swaging and warm drawing from the directional solidified rods. The magnetostriction and microstructure of the as-drawn and the annealed Fe83Ga17 wires with diameter of 0.6mm were investigated. Results demonstrated that the magnetostriction of Fe83Ga17 wires depended on the microstructure and the fiber texture, which were controlled by heat treatment process. The maximum magnetostriction of 160ppm was detected in the annealed wire, which has the ideal fiber texture. The phase mixture of A2 containing heterogeneous modified-DO3 phase has beneficial effect on magnetostriction.