氧化锆增强铝基复合材料的制备及性能研究  

Preparation and properties of zirconia-reinforced aluminum matrix composites

作　　者：张鹏[1] 祖祥博 娄东阁 蒋烨倩 章冰 张柯[1] ZHANG Peng;ZU Xiangbo;LOU Dongge;JIANG Yeqian;ZHANG Bing;ZHANG Ke(School of Materials and Chemistry,University of Shanghai for Science and Technology,Shanghai 200093,China;CHINALCO Luoyang Copper Processing Co.,Ltd.,Luoyang 471039,China)

机构地区：[1]上海理工大学材料与化学学院,上海200093 [2]中铝洛阳铜加工有限公司,河南洛阳471039

出　　处：《有色金属材料与工程》2024年第4期25-32,共8页Nonferrous Metal Materials and Engineering

基　　金：国家自然科学基金资助项目(52371070)。

摘　　要：铝合金由于其强度高、质量轻、价格低等多重优势,在汽车制造、航空航天、水下装备等各个领域都极具应用前景。利用机械搅拌铸造方法制备了不同质量分数纳米氧化钇稳定氧化锆(yttrium oxide stabilized zirconia,YSZ)的Al-YSZ复合材料,研究纳米YSZ质量分数对铝基复合材料组织和性能的影响。研究结果表明,添加的纳米YSZ均匀分布在Al基体中,不与Al基体发生反应。同时能够作为异质形核剂细化晶粒,并通过Orowan强化机制提升复合材料的力学性能。添加质量分数为8%的纳米YSZ的复合材料具有较好的强度和塑性。同时,在受到外力作用时,纳米YSZ会发生从四方到单斜的相变,并产生一定的体积膨胀,在吸收能量的同时改善了复合材料内部的晶格畸变,从而提高了铸态复合材料的塑性。Aluminum alloy,due to its multiple advantages such as high strength,lightweight,and cost�effectiveness,holds significant potential for applications in various fields including automotive manufacturing,aerospace,and underwater equipment.Al-yttrium oxide stabilized zirconia(YSZ)composite materials with varying content of nano-YSZ were prepared using the mechanical stir casting method to investigate the influence of nano-YSZ and its mass fraction on the microstructure and properties of aluminum-based composites.The results reveal that the added nano-YSZ is uniformly distributed within the Al matrix without reacting with it.Additionally,it can serve as a heterogeneous nucleating agent for grain refinement and enhance the mechanical properties of the composite materials through the Orowan strengthening mechanism.Composite materials with 8%mass fraction of nano�YSZ exhibit good tensile strength and ductility.This enhancement can be attributed to the tetragonal-to�monoclinic phase transformation of nano-YSZ under external forces,resulting in volumetric expansion and simultaneous absorption of energy,thereby ameliorating lattice distortion within the composite and enhancing its ductility in the as-cast state.

关 键 词：铝基复合材料 氧化钇稳定氧化锆 铸造 力学性能 

分 类 号：TB333[一般工业技术—材料科学与工程]