Title: Effect of different processes on the microstructure and mechanical properties of the Al-8.5Fe-1.3V-1.7Si/SiCP composite sheet

Authors: Yi-Qiang He, Bin Qiao, Jian-Ming Yang, Na Wang, Zhen-Hua Chen, Liang Hao

Addresses: Huaihai Institute of Technology, College of Mechanical Engineering, Lianyungang 222005, PR China. ' Huaihai Institute of Technology, College of Mechanical Engineering, Lianyungang 222005, PR China. ' Huaihai Institute of Technology, College of Mechanical Engineering, Lianyungang 222005, PR China. ' Huaihai Institute of Technology, Department of Hunan Resource, Lianyungang 222005, PR China. ' College of Materials Science and Engineering, Hunan University, Changsha 410082, PR China. ' College of Materials Science and Engineering, Hunan University, Changsha 410082, PR China

Abstract: Processes of rolling after extruding and rolling after hot-pressing of multi-layer spray deposited Al-8.5Fe-1.3V-1.7Si/SiCP, and the effect of the two different processes on the microstructure and mechanical properties of the composite were investigated. The microstructure of the composite prepared by different processes was observed by OM, SEM and TEM. The results showed that more uniform microstructure and more excellent mechanical properties of the composites were obtained by rolling after hot-pressing than rolling after extruding. The excellent mechanical properties can be attributed to avoiding of SiC particles lamination which is familiar to the composite as-extruded by hot-pressing, stable microstructure, and good bonding between SiC particles and the matrix.

Keywords: heat resistant aluminium alloys; composites; spray deposition; hot working; microstructure; mechanical properties; extrusion; rolling; hot pressing; silicon carbide.

DOI: 10.1504/IJMPT.2010.032106

International Journal of Materials and Product Technology, 2010 Vol.38 No.2/3, pp.297 - 306

Available online: 10 Mar 2010 *

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