Microstructures and phase formation in rapidly solidified Sm-Fe and Sm-Fe-Ti-C alloys

被引：30

作者：

Shield, JE ^{[1
]}

Li, CP

Branagan, DJ

机构：

[1] Univ Utah, Dept Mat Sci & Engn, Salt Lake City, UT 84112 USA

[2] Iowa State Univ Sci & Technol, Ames Lab, Ames, IA 50011 USA

[3] Idaho Natl Engn & Environm Lab, Idaho Falls, ID 83415 USA

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1998年 / 188卷 / 03期

关键词：

microstructure; interstitial permanent magnets; rapid solidification; magnetic properties;

D O I：

10.1016/S0304-8853(98)00208-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Partially ordered Sm2Fe17, closer to the SmFe7 structure, formed upon melt spinning of Sm11Fe89. A strong dependence of grain size on the wheel speed was also observed, with wheel speeds less than 40 m/s generating grain sizes above the single domain limit for Sm2Fe17Nx. The addition of Ti and C resulted in an order of magnitude grain refinement compared to the binary alloys. The Ti and C also effectively inhibited grain growth during annealing. The nitrided Sm-Fe-Ti-C alloys also displayed a rapid decrease in coercivity with decreasing grain size, which was attributed to increased exchange interactions. (C) 1998 Elsevier Science B.V. All rights reserved.

引用

页码：353 / 360

页数：8

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