Abstract
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 <100> fiber texture. The phase mixture of A2 containing heterogeneous modified-DO3 phase has beneficial effect on magnetostriction.
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