K-2305 急冷凝固磁性記憶合金Fe-29.6at%Pd薄帯での巨大磁歪効果 : 実験的検証(S13-2 多機能・複合機能化への材料協調設計(2))(S13 多機能・複合機能化への材料協調設計)

概要

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Since ferromagnetic shape memory alloy (FSMA) was discovered, the various researches has been done for the industrial application as sensor and actuator materials. In this study, Fe-29.6at%Pd alloy of the ferrous material, which it was easy to process, was made to be the ribbon by the rapid solidification method. Then, the investigation of the appearance mechanism of giant magnetostriction in polycrystal FSMA of which the still detailed mechanism had not been clarified was made to be a purpose. As results: 1) The magnetostriction of rapidly solidified ribbon is bigger over 10 times than the bulk. 2) The coercive force of the ribbon has strong directional dependency. 3) From magnetostriction measurement, austenite phase transformation occurred at 400〜440K, while magnetic properties and X-ray diffraction, austenite phase transformation occurred at 293〜330K. In addition, shape recovery test indicated 2-steps transformation.
一般社団法人日本機械学会の論文
2001-08-22