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Volume 31 Issue 6
Jun.  2024
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文章导航 >  矿物冶金与材料学报（英文）  > 2024  >  31(6): 1333-1349
Yubo Huang, Ning Xu, Huaile Lu, Yang Ren, Shilei Li, and Yandong Wang, Microstructures and micromechanical behaviors of high-entropy alloys investigated by synchrotron X-ray and neutron diffraction techniques: A review, Int. J. Miner. Metall. Mater., 31(2024), No. 6, pp. 1333-1349. https://doi.org/10.1007/s12613-024-2840-9
Cite this article as:
Yubo Huang, Ning Xu, Huaile Lu, Yang Ren, Shilei Li, and Yandong Wang, Microstructures and micromechanical behaviors of high-entropy alloys investigated by synchrotron X-ray and neutron diffraction techniques: A review, Int. J. Miner. Metall. Mater., 31(2024), No. 6, pp. 1333-1349. https://doi.org/10.1007/s12613-024-2840-9
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特约综述

基于同步辐射X射线与中子衍射技术的高熵合金微观组织与微观变形行为研究综述

  • 1)

    北京科技大学北京材料基因工程高精尖创新中心, 北京科技大学新金属材料国家重点实验室, 北京 100083, 中国

  • 2)

    鞍钢集团北京研究院有限公司, 北京 102200, 中国

  • 3)

    散裂中子源科学中心, 东莞 523803, 中国

  • 4)

    香港城市大学物理系, 香港 999077, 中国

  • 5)

    辽宁材料实验室材料智能技术研究所, 沈阳 110004, 中国


  • 通讯作者:

    李时磊    E-mail: lishilei@ustb.edu.cn

    王沿东    E-mail: ydwang@ustb.edu.cn

文章亮点

  • (1) 总结了高熵合金形变机制的影响因素
  • (2) 综述了高熵合金的形变相变微观力学行为
  • (3) 汇总了同步辐射和中子技术对高熵合金形变过程中组织/应力演化研究
  • 高熵合金由于具有优异的力学性能以及耐腐蚀、抗辐照等特性，少数已经备选成为航空航天、国防科技等领域的应用材料。深入探究高熵合金的形变机制可以指导合金组织调控和强韧化设计，对认识和挖掘新型结构材料具有重要意义。而同步辐射和中子技术作为材料科学研究的重要工具，尤其在原位耦合物理场/化学场、解析材料宏观晶体学信息等方面具有巨大优势。近几年，大量学者利用同步辐射和中子技术研究高熵合金的形变、相变、应力行为以及变温、高压、加氢等原位过程。本文将简单阐述同步辐射和中子技术的原理和发展，并简要总结高熵合金形变机制的影响因素。我们将重点综述高熵合金在拉伸/压缩或蠕变/疲劳变形过程中的微观组织与微观变形行为的配合与演化，以及同步辐射和中子技术对高熵合金形变过程中位错/层错/孪晶/相变等组织变化和晶间/相间应力变化等的研究。并对今后同步辐射/中子技术的发展和新型金属材料形变机制的研究进行展望。
    • Invited Review

    Microstructures and micromechanical behaviors of high-entropy alloys investigated by synchrotron X-ray and neutron diffraction techniques: A review

    + Author Affiliations
      Abstract
    • High-entropy alloys (HEAs) possess outstanding features such as corrosion resistance, irradiation resistance, and good mechanical properties. A few HEAs have found applications in the fields of aerospace and defense. Extensive studies on the deformation mechanisms of HEAs can guide microstructure control and toughness design, which is vital for understanding and studying state-of-the-art structural materials. Synchrotron X-ray and neutron diffraction are necessary techniques for materials science research, especially for in situ coupling of physical/chemical fields and for resolving macro/microcrystallographic information on materials. Recently, several researchers have applied synchrotron X-ray and neutron diffraction methods to study the deformation mechanisms, phase transformations, stress behaviors, and in situ processes of HEAs, such as variable-temperature, high-pressure, and hydrogenation processes. In this review, the principles and development of synchrotron X-ray and neutron diffraction are presented, and their applications in the deformation mechanisms of HEAs are discussed. The factors that influence the deformation mechanisms of HEAs are also outlined. This review focuses on the microstructures and micromechanical behaviors during tension/compression or creep/fatigue deformation and the application of synchrotron X-ray and neutron diffraction methods to the characterization of dislocations, stacking faults, twins, phases, and intergrain/interphase stress changes. Perspectives on future developments of synchrotron X-ray and neutron diffraction and on research directions on the deformation mechanisms of novel metals are discussed.
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