Abstract In this study, we report a liquid-solid reaction method combined with preferential particle orientation for fabricating a heterostructured Al3BC/6061 composite with ultrahigh Young's modulus (105 GPa), high tensile strength (495 MPa) and reasonable ductility (6.2%). The preferential orientation of Al3BC nanoplatelets contributes to the ultrahigh stiffness, and heterogeneous grain structure of the Al matrix facilitates the development of hetero-deformation induced stress and extra strain hardening, giving rise to high strength and good ductility. These results shed new sights into the untapped potential in improving the mechanical properties of metal matrix composites.

中文翻译：

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定向纳米片增强的坚硬、坚固且可延展的异质结构铝复合材料

摘要 在本研究中，我们报道了一种结合优先粒子取向的液固反应方法，用于制备具有超高杨氏模量 (105 GPa)、高拉伸强度 (495 MPa) 和合理延展性 (6.2%) 的异质结构 Al3BC/6061 复合材料。Al3BC 纳米片的优先取向有助于超高刚度，Al 基体的异质晶粒结构促进异质变形诱导应力和额外应变硬化的发展，从而产生高强度和良好的延展性。这些结果为改善金属基复合材料机械性能的未开发潜力提供了新的视角。