Processing Study on Properties of Rare-Earth TbDyFe Magnetostrictive Alloy
Processing Study on Properties of Rare-Earth TbDyFe Magnetostrictive Alloy
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发表时间：
2007
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通讯作者：
Lei Yu
中科院分区：
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作者：
Lei Yu
采用区熔定向凝固法制备了110根取向的TbDyFe超磁致伸缩合金棒材。对具有择优取向的TbDyFe合金进行了不同的热处理工艺研究。结果表明，退火对TbDyFe合金的组织和磁致伸缩有影响。稀土相的球形性和晶体的长大是高温退火改善合金磁致伸缩性能的根本原因。利用多参数磁测系统测量了磁致伸缩、附加磁导率等磁参数对磁场的依赖曲线。
110 oriented rods of a TbDyFe giant magnetostrictive alloy has been successfully prepared by zone melting directional solidification method.The different technologies of heat treatment have been researched in a TbDyFe alloy with preferred orientation.The results show that the annealing can influence the microstructure and magnetostriction in the TbDyFe alloy.The sphericity of the rare-earth phase and the crystal growth,which can decrease the resistance of the domain rotation,is a basic reason for high-temperature annealing to improve the magnetostriction in the alloy.The dependent curves of magnetostriction,added magnetic conductivity and other magnetic parameters on magnetic field were measured by using multiple parameter magnetic measurement system.