Stable U-based metallic glasses

作者：Huang, H. G.; Ke, H. B.; Wang, Y. M.^*; Pu, Z.; Zhang, P.; Zhang, P. G.; Liu, T. W.^*

来源：Journal of Alloys and Compounds, 2016, 684: 75-83.

DOI：10.1016/j.jallcom.2016.05.124

• Metallic glass
• Uranium alloy
• Corrosion resistance
• Glass-forming ability
• Mechanical property

A series of U-based U-Co-Al metallic glasses with greatly improved glass-forming ability and thermal stability were obtained by the alloying addition of Al into U-Co alloys. The fragility of these glasses approached 28, indicating strong liquid behavior. The corrosion resistance and mechanical hardness of the glasses were substantially enhanced in comparison with crystalline uranium materials. The roles of delocalization of 5f electrons and their bonding states are stressed in the discussion of the glass formation, thermal stability and the deviation of elastic modulus from the rule of mixtures. The finding not only adds a new member to the family of metallic glasses, but also provides a category of potentially useful uranium materials.

• 出版日期2016-11-5
• 单位大连理工大学; 中国工程物理研究院