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金属学报  2008 

强磁场下Fe-49%Sn偏晶合金凝固组织及磁性能

, PP. 1219-1223

Keywords: 强磁场,Fe-49%Sn,偏晶合金,富Fe相形貌

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Abstract:

研究了强磁场对Fe-49%Sn(质量分数)偏晶合金凝固组织演变及磁性能的影响.结果表明施加强磁场可以显著改变富Fe相枝晶形貌,进而改善材料的磁性能.在无磁场作用下富Fe相为无方向性的枝晶及网状组织形貌;随磁感应强度增加,富Fe相沿平行磁场方向定向排列程度增加,α-Fe的(110)晶面衍射强度增强.分析认为,这是由于强磁场诱使晶体磁各向异性能增加,使得α-Fe枝晶择优取向作用增强.根据样品磁滞回线计算的磁各向异性能结果与理论分析一致.另外,XRD分析表明,有、无强磁场作用下凝固样品的物相均不变,都由α-Fe,β-Sn,FeSn及FeSn2组成.

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