Preparation and characterization of squeeze cast-Al–Si piston alloy reinforced by Ni and nano-Al2O3 particles

被引：17
作者：
El-Labban H.F. [1 ]
Abdelaziz M. [2 ]
Mahmoud E.R.I. [3 ]
机构：
[1] Production Engineering Dept., Faculty of Engineering, Alexandria University, Alex.
[2] Composite Material Lab., Advanced Materials Dept., CMRDI, Cairo
[3] Welding and NDT Lab., Manufacturing Technology Dept., Central Metallurgical Research and Development Institute (CMRDI), Cairo
来源：
Journal of King Saud University - Engineering Sciences | 2016年 / 28卷 / 02期
关键词：
Casting; Mechanical properties; Metal-matrix composites (MMCs); Microstructures; Nano-structures; Particle-reinforcement;
D O I：
10.1016/j.jksues.2014.04.002
中图分类号：
学科分类号：
摘要：
Al–Si base composites reinforced with different mixtures of Ni and nano-Al2O3 particles have been fabricated by squeeze casting and their metallurgical and mechanical characterization has been investigated. A mixture of Ni and nano-Al2O3 particles of different ratios was added to the melted Al–Si piston alloy at 700 °C and stirred under pressure. After the Al-base-nano-composites were fabricated by squeeze casting, the microstructure and the particle distribution inside the matrix have been investigated using optical and scanning electron microscopes. Moreover, the hardness and the tensile properties of the resulted Al-base-nano-composites were evaluated at room temperature by using Vickers hardness and universal tensile testers, respectively. As a result, in most cases, it was found that the matrix showed a fine eutectic structure of short silicon constituent which appeared in the form of islands in the α-phase around some added particle agglomerations of the nano-composite structures. The tendency of this structure formation increases with the increase of Ni particle addition. As the ratio of the added particles increases, the tendency of these particles to be agglomerated also increases. Regarding the tensile properties of the fabricated Al-base-nano-composites, ultimate tensile strength is increased by adding the Ni and nano-Al2O3 particles up to 10 and 2 wt.%, respectively. Moreover, the ductility of the fabricated composites is significantly improved by increasing the added Ni particles. The composite material reinforced with 5 wt.% Ni and 2 wt.% nano-Al2O3 particles showed superior ultimate tensile strength and good ductility compared with any other added particles in this investigation. © 2014
引用
收藏
页码：230 / 239
页数：9
相关论文
共 40 条
[11]  
Lee J.A., High-strength aluminum casting alloy for high-temperature applications, (1998)
[12]  
Lloyd D.J., Particle reinforced aluminum and magnesium matrix composites, Int. Mater. Rev., 39, 1, pp. 1-23, (1994)
[13]  
Ma Z.Y., Li Y.L., Liang Y., Zheng F., Bi J., Tjong S.C., Nanometric Si<sub>3</sub>N<sub>4</sub> particulate-reinforced aluminum composite, Mater. Sci. Eng. A, 219, pp. 229-231, (1996)
[14]  
Mahadevan R., Gopal R., Selectively reinforced squeeze cast pistons, (2008)
[15]  
Mahmoud E.R.I., Ikeuchi K., Takahashi M., Fabrication of SiC particle reinforced composite on aluminium surface by friction stir processing, Sci. Technol. Weld. Join., 13, 7, pp. 607-618, (2008)
[16]  
Mahmoud E.R.I., Ikeuchi K., Shibayanagi T., Takahashi M., Fabrication of surface-hybrid-MMCs layer on aluminum plate by friction stir processing and its wear characteristics, Mater. Trans., 50, 7, pp. 1824-1831, (2009)
[17]  
Mahmoud E.R.I., Ikeuchi K., Shibayanagi T., Takahashi M., Wear characteristics of surface-hybrid-MMCs layer fabricated on aluminum plate by friction stir processing, Wear, 268, 9-10, pp. 1111-1121, (2010)
[18]  
Martin A., Martinez M.A., Lorca J.L., Wear of SiC-reinforced Al-matrix composites in the temperature range 20–200 °C, Wear, 193, pp. 169-179, (1996)
[19]  
Michaud V.J., Fundamentals of Metal Matrix Composites, pp. 3-22, (1993)
[20]  
Mudry S., Shtablavyi I., Cluster structure in Al–Si eutectic melt with solid Ni particles, Chem. Met. Alloys, 1, pp. 163-167, (2008)
1234