摘要
实验选取非自耗真空电弧炉熔炼合金锭,并对合金的相结构及磁致伸缩性能进行研究。研究结果表明,在Fe-Ga合金中掺入Al元素来替代Ga元素的占位后,Fe_(81)Ga_(19-x)Al_(x)合金仍然以A2相为主,其基本结构为α-Fe体心立方结构,晶粒由之前细长的不规则多边形变为长条状的柱状晶,并且柱状晶的取向性显著增强;当x=3.5时合金的饱和磁致伸缩值为202×10^(-6),约为x=0时的4倍。磁致伸缩性能的提高主要归因于掺Al后Fe-Ga合金的A2相沿[100]的择优取向以及Al原子进入Fe-Ga合金晶格引起的晶格畸变。
In this experiment,non-consumable vacuum arc furnace was selected to melt the alloy ingot,and the phase structure and magnetostrictive properties of the alloy were studied.The results show that the Fe_(81)Ga_(19-X)Al_(X) alloy is still dominated by A2 phase after the addition of Al element to the Fe-Ga alloy to replace the occupying of Ga element.The basic structure of the alloy isα-Fe core cubic structure,and the grains change from slender irregular polygons to long columnar crystals,and the orientation of the columnar crystals is significantly enhanced.When x=3.5,the saturation magnetostrictive value of the alloy is 202×10^(-6),which is about four times of that when x=0.The improvement of magnetostrictive properties is mainly attributed to the preferred orientation of phase A2 along[100]of Fe-Ga alloy doped with Al and the lattice distortion caused by Al atom entering the lattice of Fe-Ga alloy.
作者
郝宏波
李晓
龚沛
魏宗英
乔禹
姚特
梁雨萍
王婷婷
HAO Hongbo;LI Xiao;GONG Pei;WEI Zongying;QIAO Yu;YAO Te;LIANG Yuping;WANG Tingting(Baotou Research Institute of Rare Earths, Baotou 014030, China;School of Materials Science and Engineering, Inner Mongolia University of Technology,Hohhot 010051, China)
出处
《功能材料》
CAS
CSCD
北大核心
2022年第5期5231-5236,共6页
Journal of Functional Materials
基金
内蒙古自然科学基金重大项目(2018ZD10)
内蒙古关键技术攻关项目(2021GG0245)。
