摘要
采用区熔定向凝固技术制备了〈110〉取向(Tb_(0.36)Dy_(0.64))_(1-x)Ho_xFe_2合金,研究了在0,5和10 MPa压力下该合金的磁致伸缩性能及其磁致伸缩的滞后特性.结果表明:在外加轴向压应力作用下,〈110〉取向(Tb_(0.36)Dy_(0.64))_(1-x)Ho_xFe_2合金具有明显的磁致伸缩"跳跃效应";x<0.3的合金在较宽的温度范围(-60—80℃)内具有巨磁致伸缩特性;随x的增加,合金磁致伸缩滞后显著降低.在外加压力为0,5和10MPa时,相对于滞后宽度为10.4,13.5和16.6 kA/m的x=0合金而言,x=0.1合金的滞后宽度减小为9.3,11.6和13.7 kA/m;x=0.2合金的滞后宽度减小为7.5,10.8和12.9 kA/m;x=0.3合金的滞后宽度减小为5.4,8.8和9.8 kA/m.
The （Tb0.a6Dy0 64）1-xHoxFe2 magnetostrictive alloys with （110） orientation were prepared by zone melting directionally solidified method. The magnetostrictive performance and hysteresis of （110） aligned polycrystalline （Tb0.36Dy0.64）1-xHoxFe2 under compressive stresses of 0, 5, 10 MPa were investigated. An obvious magnetostriction ＂ jump ＂ effect under compressive stress was observed in these （110） aligned polycrystalline （Tb0.36Dy0.64）1-xHoxFe2 samples. The （Tb0.36Dy0.64）1-xHoxFe2 alloys （x 〈0.3） has the character of giant magnetostriction in a wide operating temperature range from -60 to 80 ℃. The hysteresis, represented by the width of magnetostriction versus the applied field, was reduced dramatically due to the addition of Ho element. Compared to the Tb0.36Dy0.64Fe1.95 alloy （x=0） with hysteresises of 10.4, 13.5, 16.6 kA/m under compressive stresses of 0, 5, 10 MPa, the magnetostriction hysteresises reduced to 9.3, 11.6, 13.7 kA/m for x=0.1; to 7.5, 10.8, 12.9 kA/m for x=0.2 and to 5.4, 8.8, 9.8 kA/m for the alloy with x=0.3, respectively.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
2007年第11期1217-1220,共4页
Acta Metallurgica Sinica
基金
国家自然科学基金重点项目60534020
教育部新世纪优秀人才支持计划项目NCET-04-0165资助~~
