采用粒径为0.5 μm和10μmAlN颗粒用挤压铸造法制备出两种体积分数为50%的A1Np/LY12复合材料,研究了两种材料的时效硬化行为及微观组织结构.结果表明:AlN颗粒的存在未改变基体合金的沉淀析出次序,但加速了基体合金的时效析出速率,且大颗粒的促进作用比小颗粒更明显.透射电镜观察表明,复合材料中基体内的位错密度高于基体LY12合金,并随增强体颗粒增大而增多,颗粒加入后引入的大量相界面和高密度位错是时效硬化速率加快的主要原因.
参考文献
| [1] | 克莱因T W;威瑟斯PJ;余永宁;房志刚.金属基复合材料导论[M].北京:冶金工业出版社,1996 |
| [2] | Suresh S;CHRISTMAN T;SUGIMURE Y .Accelerated aging in a Cast Alloy-SiC Particulate Composites[J].Scripta Metallurgica et Materialia,1989,23:1599-1602. |
| [3] | TOWLE D J;FRIEND C;FRIEND M .The effect of earticulate oxidation on the age-hardening characteristics of SiC/6061 MMC produced by the perform infiltrtion route[J].Scripta Metallurgica et Materialia,1992,26:437-442. |
| [4] | Wu G H;MA S L;ZHAO Y H et al.Suppression effect of fine Al2O3 on aging kinetics in a 6061 Al matrix composite material trans[J].Nonferrous Metals Society of China,1999,9(04):818-825. |
| [5] | DUTTA;ALLEN S M;HAFLEY J L .Effect of reinforcement on the aging responese of cast 6061 AlAl2O3 particulate composites[J].Metallurgical and Materials Transactions,1991,22:2553-2563. |
| [6] | LIN J S;LIP X;WU R J .Aging evaluation of cast particulate-reinforced SiC/Al ( 2024 ) composites[J].Scripta Metallurgica et Materialia,1993,28:281-286. |
| [7] | Nieh T G;KARLAK R F .Aging characteristics of B4C/6061 Al[J].Scripta Metallurgica et Materialia,1984,18(03):25-28. |
| [8] | GUPTA M;QIN S;CHIN L W .Effect of particulate type on the microstructure and heat-treatment response of Al-Cu-based metal-matrix composites[J].Journal of Materials Processing Technology,1997,65:245-251. |
| [9] | Gaohui WU,Bofeng LUAN,Longtao JIANG,Dongli SUN.Effect of Thermal Cycling Treatment on Microstructure and Mechanical Properties of AlNp/2024Al Composite[J].材料科学技术学报(英文版),2001(01):61-62. |
| [10] | Lai S W;CHUNG D D .Super high-temperature resistance of aluminum nitride particle-reinforced aluminum compared to silicon carbide or aluminum particle-reinforced aluminium[J].Journal of Materials Science,1994,24:6181-6198. |
| [11] | 张强,孙东立,武高辉.电子封装基片材料研究进展[J].材料科学与工艺,2000(04):66-72. |
| [12] | 武高辉 .亚微米颗粒与铝合金的复合工艺[P].CN 94117266 X,1999. |
| [13] | Kim C T;LEE J K;PLICHTS M R .Plastic relaxation of thermoplastic stress in aluminum/ ceramic composites[J].Metallurgical and Materials Transactions,1990,21(03):673-681. |
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