Influence of Small Cr Addition on Thermal Stability and Magnetic Properties of Fe-Co-Zr-Nb-B Glassy Alloys

材料科学技术（英）, 2007, 23(5): 703-706.

^1, , ^2, , ^3, , ^4, , ^5,

1.Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, School of Materials and Metallurgy,Northeastern University, Shenyang 110004, China

2.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

3.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,Shenyang 110016, China

4.Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, School of Materials and Metallurgy,Northeastern University, Shenyang 110004, China

5.Key Laboratory for Anisotropy and Texture of Materials, Ministry of Education, School of Materials and Metallurgy,Northeastern University, Shenyang 110004, China

基金项目: 国家自然科学基金(50471075)

Influence of Small Cr Addition on Thermal Stability and Magnetic Properties of Fe-Co-Zr-Nb-B Glassy Alloys

Keywords： Cr addition

Fe62Co8-xCrxZr6Nb4B2o (x=0-4 at. Pct) metallic glasses show high thermal stability with a maximum supercooled liquid region of about 84.8 K. The addition of 2 at. pet Cr causes the extension of the supercooled liquid region remarkably, leading to the enhancement of thermal stability and glass-forming ability. The crystallization of the Fe-based glassy alloys takes place through a single exothermic reaction, accompanying the precipitation of more than three kinds of crystallized phases such as a-Fe, Fe2Zr and ZrB2- The long-range atomic rearrangements required for the precipitation of the multiple crystalline phases seem to play an important role in the appearance of the large supercooled liquid region through the retardation of the crystallization reactions. The Fe-based alloys exhibit soft ferromagnetic properties. The saturation magnetization decreases with increasing Cr content while the saturated magnetostriction increases as a function of Cr content. There is no distinct change in the saturation magnetization and coercive force with annealing temperature below the crystallization temperature. The devitrification gives rise to a considerable enhancement in both σs and Hc.

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Influence of Small Cr Addition on Thermal Stability and Magnetic Properties of Fe-Co-Zr-Nb-B Glassy Alloys

参考文献