真空磁场热处理对Fe-Ga-Al合金磁致伸缩的影响  

Effect of heat-treatment in vacuum magnetic field on magnetostrictive Fe-Ga-Al alloys

作　　者：周严[1] 王博文[2,3] 李淑英[2] 黄文美[2] 曹淑英[2] 

机构地区：[1]天津商业大学理学院,天津300134 [2]河北工业大学磁技术与磁材料研究中心,天津300130 [3]中国科学院国际材料物理中心,沈阳110015

出　　处：《真空》2010年第2期48-51,共4页Vacuum

基　　金：国家自然科学基金(50571034;50971056);河北省自然科学基金(08B003);天津商业大学青年教师科研培育基金

摘　　要：采用电弧炉熔炼方法得到Fe82Ga18-xAlx(x=3,9,12)合金的多晶样品。利用X射线衍射(XRD)和金相观察对合金的相组成进行分析,并对其磁致伸缩系数进行测量。经过真空磁场热处理后,对Fe-Ga-Al合金的结构和磁致伸缩性能进行研究。结果表明,真空磁场热处理后Fe-Ga-Al合金磁致伸缩系数均有提高,其中Fe82Ga9Al9合金经磁场热处理后,磁致伸缩达到114×10-6;Fe82Ga15Al3合金经磁场热处理后,其磁致伸缩增幅最大,比处理前增加165%。The ingot of Fe82Ga18-xAlx（x=3,9,12） alloys were prepared with a high-vacuum arc melting system. XRD and metalloscope were used to analyze the phase structure of the alloys with the magnetostriction coefficient measured. Then, after the heat-treatment in vacuum magnetic field, the structure of the alloys and the effect of magnetostriction on them were investigated. It was found that the magnetostriction coefficients of all the Fe-Ga-A1 samples are increased somewhat, among which the magnetostriction coefficient of Fe82Ga9Al9 alloy is up to 114×10^-6 especially the Fe82Ga15Al3 ahoy whose incremental ratio is 165%, ie., the highest one.

关 键 词：磁场热处理 真空 磁致伸缩 Fe-Ga-Al合金 

分 类 号：TM271[一般工业技术—材料科学与工程] TG156.97[电气工程—电工理论与新技术]