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黄火根,柯海波,刘天伟,张鹏国,唐县娥,王英敏.微合金化对U-Co金属玻璃形成能力的影响[J].稀有金属材料与工程(英文),2018,47(3):990~994.[Huang Huogen,Ke Haibo,Liu Tianwei,Zhang Pengguo,Tang Xiane,Wang Yingmin.Effect of Minor Alloying on the Glass Forming Ability of U-Co Alloy[J].Rare Metal Materials and Engineering,2018,47(3):990~994.]
Effect of Minor Alloying on the Glass Forming Ability of U-Co Alloy
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Received:January 19, 2016  Revised:April 20, 2016
DOI:
Key words: metallic glass  glass forming ability  minor alloying  uranium alloy.
Foundation item:国防基础预研项目(项目号B1520133007)和中国工程物理研究院科技发展(项目号2013A0301015)资助.
Author NameAffiliationE-mail
Huang Huogen Institute of Materials,China Academy of Engineering Physics,POBox hhgeng2002@sina.com 
Ke Haibo Institute of Materials,China Academy of Engineering Physics,POBox  
Liu Tianwei Institute of Materials,China Academy of Engineering Physics,POBox  
Zhang Pengguo Institute of Materials,China Academy of Engineering Physics,POBox  
Tang Xiane Institute of Materials,China Academy of Engineering Physics,POBox  
Wang Yingmin ?Key Laboratory of Materials Modification by Laser,Ion,and Electron Beams Ministry of Education,School of Materials Science and Engineering,Dalian University of Technology  
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Abstract:
      Minor alloying is a useful approach for promoting glass forming ability (GFA) of metallic glasses. U-Co metallic glasses can be achieved in a wide composition range, but their GFAs are very poor. This study is aimed to increase the GFA in U-Co system by minor alloying. Sn, Si, Be, Cu, Pd, Y and Zr were selected as different-typed minor alloying elements in U69.2Co30.8 alloy. The glassy U69Co30M1 (M=Sn, Si, Be, Cu, Pd, Y, Zr) ribbon samples were prepared by melt-spinning with a copper roller, and their phase formation and thermodynamics were investigated by X-ray diffraction (XRD) and differential scanning calorimetry (DSC) techniques. The results indicate that, Sn element significantly improves the GFA, Si displays the second improvement, Be and Cu are slightly effective while Pd, Y and Zr deteriorate the GFA. Based on the combination of the melting behavior change reflected by the DSC result, and the relationship between the GFA and the melting temperatures, electro-negativities, atomic sizes of M elements as well as mixing-enthalpies of M-C, the effect of the minor alloying on the GFA in U-Co system should be attributed to the variation of both metallic liquid stability and the crystallization driving force.