531 FeGaAl(Galfenol)系合金高強度化への熱処理効果(複合機能化材料・デバイスとその加工プロセス2)

概要

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The purpose of this study is to improve the strength as well as magnetic property of a magnetostrictive Fe-Ga (Galfenol) system alloy. The samples are the FeGaAl-C alloys which are added by aluminum and carbon elements. The test samples were produced by the rapid solidification method using the nozzleless twin rolling method. The samples are investigated about many characteristics such as a strength, a magnetic property, and the magnetostriction characteristic, using XRD, a tensile test, and VSM.In addition, material improvement by heat treatment in the (Fe80Ga15A15)98.4-C1.6[at.%] ribbon is studied A maximum magnetostriction and tensile strength is 175ppm and 960MPa in (Fe80Ga15A15)98.4C-1.6[at.%] alloy by annealing at 823K for 3.6ks, which seems very useful in the industrial application because the high tensile strength of nearly 1GPa is very effective to fabricate the actuator/sensor devices with high fracture resistance.
2007-11-16