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High-Strength and High-Ductility Nanostructured and Amorphous Metallic Materials

机译：高强度，高延展性的纳米结构和非晶态金属材料

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摘要

The development of materials with dual properties of high strength and high ductility has been a constant challenge since the foundation of the materials science discipline. The rapid progress of nanotechnology in recent decades has further brought this challenge to a new era. This Research News highlights a few newly developed strategies to optimize advanced nanomaterials and metallic glasses with exceptional dual mechanical properties of high strength and high ductility. A general concept of strain non-localization is presented to describe the role of multiscale (i.e., macroscale, microscale, nanoscale, and atomic scale) heterogeneities in the ductility enhancement of materials reputed to be intrinsically brittle, such as nanostructured metallic materials and bulk metallic glasses. These nanomaterials clearly form a new group of materials that display an extraordinary relationship between yield strength and the uniform elongation with the same chemical composition. Several other examples of nanomaterials such as those reinforced by nanoprecipitates will also be described.
机译：自材料科学学科成立以来，具有高强度和高延展性双重特性的材料的开发一直是一项持续的挑战。近几十年来，纳米技术的飞速发展将这一挑战进一步推向了新时代。该研究新闻重点介绍了一些新开发的策略，这些策略可以优化先进的纳米材料和具有高强度和高延展性的双重机械性能的金属玻璃。提出了应变非局部化的一般概念，以描述多尺度（即，宏观，微观，纳米和原子尺度）异质性在被称为固有脆性的材料（例如纳米结构金属材料和大块金属）的延展性增强中的作用。眼镜。这些纳米材料显然形成了一组新的材料，它们在屈服强度和具有相同化学组成的均匀伸长率之间显示出非凡的关系。也将描述纳米材料的其他几个例子，例如被纳米沉淀增强的纳米材料。

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  • 来源
    《Advanced Materials》 |2014年第31期|5518-5524|共7页
  • 作者

    Hongning Kou; Jian Lu; Ying Li;

  • 作者单位

    Department of Mechanical and Biomedical Engineering City University of Hong Kong Tae Chee Avenue Kowloon, Hong Kong, China;

    Department of Mechanical and Biomedical Engineering City University of Hong Kong Tae Chee Avenue Kowloon, Hong Kong, China,Centre for Advanced Structural Materials City University of Hong Kong Shenzhen Research Institute 8 Yuexing 1st Road Shenzhen Hi-Tech Industrial Park Nanshan District Shenzhen, China;

    Department of Mechanical and Biomedical Engineering City University of Hong Kong Tae Chee Avenue Kowloon, Hong Kong, China,Centre for Advanced Structural Materials City University of Hong Kong Shenzhen Research Institute 8 Yuexing 1st Road Shenzhen Hi-Tech Industrial Park Nanshan District Shenzhen, China;

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