强磁场热处理对TbFe2和Tb0．27Dy0．73Fe1．95合金晶体取向、微观形貌和磁致伸缩性能的影响.pdf

《强磁场热处理对TbFe2和Tb0．27Dy0．73Fe1．95合金晶体取向、微观形貌和磁致伸缩性能的影响.pdf》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。

1、第49卷第9期仓属学玫Vo1．49NO．92013年9月第1148—1152页ACTAMETALLURGICASINICASept．2013PP．1148—1152强磁场热处理对TbFe2和Tb0．27Dy0．73Fe1．95合金晶体取向、微观形貌和磁致伸缩性能的影响木刘印刘铁王强王慧敏王丽赫冀成(东北大学材料电磁过程研究教育部重点实验室，沈阳110819)摘要研究了在11．5T的磁场强度下，强磁场热处理对稀土铁基合金TbFe2和Tbo．27Dyo．73Fel95的晶体取向、微观形貌及其磁致伸缩性能的影响．结果表明，强磁场退火不会改变合金

2、的择优取向，但是取向度较退火前有显著提高．2种样品的相组成均无变化，但l1．5T热处理使TbFe2样品中的富稀土相明显减少，磁性相面积增大．强磁场热处理后，Tbo27Dyo．73Fe1．95合金的磁致伸缩系数增幅较小，而TbFe2合金的磁致伸缩系数比无磁场样品有较大提高．关键词强磁场热处理，稀土一铁基合金，磁致伸缩，择优取向中图法分类号TG156．97文献标识码A文章编号0412—1961(2013)09-1148-05EFFECToFHIGHMAGNETICFIELDoNCRYSTAL0RIENTATIoN．M0RPH0LoGYANDM

3、AGNET0-STRICTIoN0FTbFe2ANDTb027Dy073Fe195ALL0YS．．．DURINGHEATTREATMENTPR0CESSLIUY／n．LIUTie．wANGQiang．、ANGHuimin，wANGLt，HEJichengKeyLaboratoryofElectromagneticProcessingofMaterials(MinistryofEducation)，NortheasternUniversity,Shenyang110819Correspondent：ⅣGQiang，professor，f(0

4、24)83681726E-mail：wangq@epm．neu．edu．cnSupportedbyNationafNatufafScienceFoundationofChina(Nos．51006020and51j74056)．NationafBasicResearchProgram0，ChinaNo．2011CB612206)．ndamentafResearchFundsfortheCentrafUniversitiesNos．N12o409001andN120509001JManuscrit)treceived2013—0528．in

5、revisedform2O13—0724ABSTRACTTherare—earthgiantmagnetostrictivematerialsareonekindofthemostim—portantfunctionalmaterialsnow．Therare—earthgiantmagnetostrictivematerialsofTbFe9andTbo27Dy073Fe1．．．95(R-Fe)alloyswerefirstlyusedinsonarsysteminmilitary．Now，theapplicationsoftheset

6、woalloyshavebeendevelopedwidelyinbothindustryandcivilfields．suchasmagne—tomechanicaltransducers，actuators，adaptivevibrationcontrolsystems，andSOon．TheTbR9andTb027Dy073Fe195alloysbothhavetheC15一typecubicLavesphasestructure，whichhasstrongmag—．．．neticanisotropy．Thiscausesthat

7、thealloysexhibitdifierentmagnetostrictivepropertiesalongdifierentcrystalorientations．So，thepreparationofhighorientationdegreemagnetostrictivematerialshasagreatofimportance．Inthiswork，itispredictedthatthemagnetostricivepropertyofthesetwoal—loyscanbeenhancedwithhighmagnetic

8、fieldduringheattreatmentaroundtheirCurieandeutecticpoints．Therefore．ahighmagneticfieldupto11．5Tw