定向凝固TbDyFe合金具有[112]择优取向.热处理能明显地改变显微组织和磁致伸缩性能.在1100℃真空处理2h后,磁致伸缩性能最好;空冷和炉冷对磁致伸缩性能影响不大.富稀土相的球化和晶粒吞并长大,减小了磁化过程中90°磁畴转动的阻力,是高温处理提高磁致伸缩性能的根本原因.
The different technologies of heat treatment have been researched in a TbDyFe alloywith [112] preferred orientation. lt has been found that the annealing can influence the microstructureand magnetostriction in the TbDyFe alloy. We have got the optimum tec
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