热处理对<110>取向Tb0.36Dy0.64(Fe0.85Co0.15)2合金磁致伸缩的影响

The Effect of Heat-Treatment on Magnetostriction in <110> Oriented Crystals Tb0.36Dy0.64(Fe0.85Co0.15)2

摘要:

采用区熔定向凝固方法,制备<110>取向Tb0.36Dy0.64(Fe0.85Co0.15)2合金棒.用管式炉,在1000℃进行4h的均匀化处理;沿垂直合金棒轴向,在240kA]m中进行磁场退火处理.研究了热处理方式对合金取向、显微组织和磁致伸缩的影响.结果表明,均匀化处理和磁场退火处理均不改变合金轴向择优取向;均匀化处理后,网状富稀土相球状聚集,有效地提高了合金的磁致伸缩,"跳跃"效应增强;磁场退火处理后,合金在无预压力下的磁致伸缩显著提高,而"跳跃"效应减弱.

关键词:磁致伸缩;磁场退火;均匀化处理;跳跃效应;magnetostriction;homogenization;magnetic annealing;jump effect;热处理;取向;合金;磁致伸缩;影响;Magnetostriction;Effect;Crystals;redistribution;initial;moments;jump;effect;compressive stress;free;conditions;variation;phase;improved;rods

Abstract:

Key words:磁致伸缩;磁场退火;均匀化处理;跳跃效应;magnetostriction;homogenization;magnetic annealing;jump effect;热处理;取向;合金;磁致伸缩;影响;Magnetostriction;Effect;Crystals;redistribution;initial;moments;jump;effect;compressive stress;free;conditions;variation;phase;improved;rods