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多主元合金中的化学短程有序

卜叶强 王宏涛

卜叶强, 王宏涛. 多主元合金中的化学短程有序. 力学进展, 2021, 51(4): 915-919 doi: 10.6052/1000-0992-21-027
引用本文: 卜叶强, 王宏涛. 多主元合金中的化学短程有序. 力学进展, 2021, 51(4): 915-919 doi: 10.6052/1000-0992-21-027
Bu Y Q, Wang H T. Short-range order in multicomponent alloys. Advances in Mechanics, 2021, 51(4): 915-919 doi: 10.6052/1000-0992-21-027
Citation: Bu Y Q, Wang H T. Short-range order in multicomponent alloys. Advances in Mechanics, 2021, 51(4): 915-919 doi: 10.6052/1000-0992-21-027

多主元合金中的化学短程有序

doi: 10.6052/1000-0992-21-027
详细信息
    作者简介:

    王宏涛, 浙江大学求是特聘教授, 浙江大学交叉力学中心执行主任, 杰出青年基金获得者, 曾获第十五届中国力学学会青年科技奖. 一直致力于将国家重大需求与基础研究结合, 在纳观及原子尺度探究材料微观结构与宏观性能的力学关联, 创新发展微纳米力学原位实验方法、技术以及计算模拟方法

    通讯作者:

    htw@zju.edu.cn

  • 中图分类号: O34

Short-range order in multicomponent alloys

More Information
  • 摘要: 大量的研究表明多主元合金中广泛地存在对其性能提升有重要影响的化学短程序. 利用先进的透射电子显微成像技术可以在原子分辨率水平分析多主元合金中化学短程序的尺度、成分和构型.

     

  • 图  1  (a)沿着$\langle 112 \rangle $晶带轴方向三元VCoNi合金的纳米束电子衍射图, 黄色圆圈圈出的为CSRO引起的额外的弥散衍射点. (b)使用额外的弥散衍射点拍摄的能量过滤暗场像. (c) CSRO尺寸分布的统计. (d)用高角环形暗场像表征CSRO. (e)原子级分辨率的能谱展示富V面−富Co/Ni面−富V面的三明治CSRO结构. (f)上半部为基于空间分布关联系数分析得到的各元素之间的近邻倾向, 其中该系数为正表示避免近邻, 为负表示倾向近邻; 下半部为基于蒙特卡洛模拟得出的系统能量在规避V−V近邻、倾向V−Co/Ni近邻构型时能量下降

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出版历程
  • 收稿日期:  2021-05-17
  • 录用日期:  2021-07-01
  • 网络出版日期:  2021-07-16
  • 刊出日期:  2021-11-26

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