点击次数：

论文类型：期刊论文

发表时间：2016-11-05

发表刊物：JOURNAL OF ALLOYS AND COMPOUNDS

收录刊物：SCIE、EI、Scopus

卷号：684

页面范围：75-83

ISSN号：0925-8388

关键字：Metallic glass; Uranium alloy; Corrosion resistance; Glass-forming ability; Mechanical property

摘要：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. (C) 2016 Elsevier B.V. All rights reserved.