首页|通过基体晶粒和颗粒分布异质结构的调控协同提升AlNp/Al复合材料的强度-塑性

通过基体晶粒和颗粒分布异质结构的调控协同提升AlNp/Al复合材料的强度-塑性

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
为了获得优异的强塑性能,采用液固反应结合后续的热机械处理方法制备了3种具有不同微观组织构型的异构AlNp/Al复合材料,详细研究了 AlN颗粒分布和基体晶粒组织构型对拉伸强度和塑性的影响.结果表明,复合材料的强度和塑性同时提高.其中,具有较弥散颗粒分布的Uniformed-AlNp/Al复合材料表现出优异的极限抗拉强度(～387MPa)和断裂伸长率(～9.1％).与其他文献报道的颗粒增强铝基复合材料相比,该复合材料具有较好的比强度和延展性组合.此外,计算了异质变形诱导(HDI)应力.结果表明,在Uniformed-AlNp/Al复合材料中,HDI应力显著增加.揭示了 HDI应力在提高AlNp/Al复合材料的强度和塑性中起着至关重要的作用.
Enhancing strength-ductility synergy of AlNp/Al composite by regulating hetero structure of matrix grain and particle distribution
Three heterostructured AlNp/Al composites with different microstructure configurations were fabricated by liquid-solid reaction combined with subsequent thermal-mechanical treatment to obtain a superior strength and ductility combination.The effects of the microstructure configuration including the AlN particle distribution and matrix grain structure on the tensile strength and ductility were studied in detail.The results show that the simultaneous enhancement of tensile strength and ductility can be achieved.The Uniformed-AlNp/Al composite with relatively dispersed particles exhibits a superior ultimate tensile strength of～387 MPa with an elongation to failure of～9.1％.It shows an outstanding specific tensile strength and elongation combination compared with other reported particle reinforced aluminum matrix composites.Furthermore,the hetero-deformation induced(HDI)stress has been calculated and is shown to increase significantly in the Uniformed-AlNp/Al composite.It is revealed that the HDI stress plays a crucial role in the significant enhancement of strength and ductility for the AlNp/Al composite.

AlNp/Al compositetensile strengthductilityheterogeneous structureparticle distributionstrengthening mechanism

陈玉瑶、聂金凤、范勇、顾雷、谢可伟、刘相法、赵永好

展开 >

南京理工大学材料科学与工程学院纳米异构材料中心,南京 210094

山东大学材料液固结构演变与加工教育部重点实验室,济南 250061

AlNp/Al复合材料 拉伸强度 塑性 异质结构 颗粒分布 强化机制

国家自然科学基金国家自然科学基金国家自然科学基金江苏省自然科学基金Foundation of Qinglan Project for Colleges and Universities in Jiangsu Province,China

519310035227103352071179BK20221493

2024

10.1016/S1003-6326(23)66453-2

中国有色金属学报(英文版)
中国有色金属学会

中国有色金属学报(英文版)

CSTPCD
影响因子：1.183
ISSN：1003-6326
年,卷(期)：2024.34(4)
  • 51