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纳米Al2O3/2024铝基复合材料的显微组织及力学性能
引用本文:张政,彭荣华,张海久,苏海,闫豪,高文理.纳米Al2O3/2024铝基复合材料的显微组织及力学性能[J].特种铸造及有色合金,2011(11):1055-1059.
作者姓名:张政  彭荣华  张海久  苏海  闫豪  高文理
作者单位:湖南大学材料科学与工程学院;中机国际工程设计研究院有限责任公司;
基金项目:广东省教育部产学研结合项目(2009B090300314); 湖南省科技计划项目(2009CK3072)
摘    要:利用球磨预分散-搅拌铸造法制备纳米Al2O3/2024复合材料,并对所制备的铝基复合材料进行了显微组织及力学性能的研究。结果表明,经球磨预分散后,纳米颗粒团聚现象明显消除,纳米Al2O3呈单颗粒分散于Al粉表面;复合粉体添加法有效避免了超细增强颗粒和基体润湿性差和分散性较差的问题,实现纳米Al2O3颗粒均匀弥散分布于基体合金中;纳米Al2O3颗粒的加入显著提高基体合金的力学性能。与传统搅拌铸造相比,所制备的Al2O3/2024复合材料的抗拉强度、屈服强度和显微硬度分别提高了58%、59%和16%。

关 键 词:铝基复合材料  球磨  搅拌铸造  纳米Al2O3颗粒

Microstructure and Mechanical Properties of Nano-Al2O3/2024 Aluminum Matrix Composites
Zhang Zheng,Peng Ronghua,Zhang Haijiu,Su Hai,Yan Hao,Gao Wenli.Microstructure and Mechanical Properties of Nano-Al2O3/2024 Aluminum Matrix Composites[J].Special Casting & Nonferrous Alloys,2011(11):1055-1059.
Authors:Zhang Zheng  Peng Ronghua  Zhang Haijiu  Su Hai  Yan Hao  Gao Wenli
Affiliation:Zhang Zheng~1,Peng Ronghua~2,Zhang Haijiu~2,Su Hai~1,Yan Hao~1,Gao Wenli~1(1.College of Materials Science and Engineering,Hunan University,2.China Machinery International Engineering Design Institute Co.,Ltd)
Abstract:Nano-Al2O3/2024 composites were fabricated by the pre-dispersion of ball milling and stirring casting,and microstructure and properties of the composites were investigated.The results show that the particles clustering in the as-received powder are eliminated effectively after the pre-dispersion treat ment of ball-milling,and the isolated Al2O3 nano-particles are uniformly dispersed on the surface of Al powder.Addition of the milled nano-Al2O3/Al composite powder instead of raw nano-particles can alleviate ...
Keywords:Aluminum Matrix Composites  Ball Milling  Stirring Casting  Al2O3 Nano-Particle  
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