Paper Title:
The Fracture Mechanism of As-Cast and Extruded SiCp/AZ91 Composites Fabricated by Stir Casting
  Abstract

The fracture mechanisms of SiCp/AZ91 composites were investigated by scanning electron microscopy (SEM). For the as-cast composites, the decohesion at SiCp/matrix interface is the main fracture mechanism because of the high stress concentration resulting from the segregation of particles in grain boundaries formed during solidification process. But for the extruded composites, the main fracture mechanism is the particle crack or ductile rupture of the matrix between the particles. So the fracture mechanism of SiCp/AZ91 composites is altered by extrusion because the segregation of particles and defects in the grain boundaries are largely eliminated by extrusion.

  Info
Periodical
Key Engineering Materials (Volumes 353-358)
Edited by
Yu Zhou, Shan-Tung Tu and Xishan Xie
Pages
1203-1206
DOI
10.4028/www.scientific.net/KEM.353-358.1203
Citation
X. J. Wang, K. Wu, M. Y. Zheng, H. F. Zhang, W. X. Huang, X. S. Hu, "The Fracture Mechanism of As-Cast and Extruded SiCp/AZ91 Composites Fabricated by Stir Casting", Key Engineering Materials, Vols. 353-358, pp. 1203-1206, 2007
Online since
September 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Gang Li, Liang Wang, Wei Dong Fei
Abstract:Aluminum borate whiskers and magnetic ceramic particles (NiFe2O4 or Fe3O4) reinforced aluminum matrix composites were synthesized by a...
1274
Authors: A. Bahrami, A. Razaghian, M. Emamy, H.R. Jafari Nodooshan, G.S. Mousavi
Abstract:In this study, the relationship between microstructures and mechanical properties of the extrusion processed Al-15wt.%Mg2Si composite was...
1171
Authors: Yuong Chen, Chang Jiang Zhang, Rahoma Hasan K.S, Fan Tao Kong, Shu Long Xiao, Zhi Guang Liu
Composites
Abstract:Ti-6Al-2.5Sn-4Zr-0.7Mo-0.3Si-0.3Y alloy matrix composite reinforced with 7%vol TiB whiskers was fabricated by Induction Skull Melting (ISM)...
43
Authors: Ping Wang, Fu Yin Han, Yong Sheng Wang, Lu Geng, Shao Feng Meng, Wei Liang
Chapter 5: Metal Alloy Materials
Abstract:The microstructure and mechanical properties of AZ61-4Si magnesium alloy before and after equal channel angular processing (ECAP) were...
602
Authors: Chang Jiang Zhang, Fan Tao Kong, Shu Long Xiao, Li Juan Xu, Yuong Chen, Ning Jia Deng, We Ge, Guo Jun Xu
Abstract:In this work, 2.5vol. % (TiB+TiC)/Ti composite was prepared by in situ casting route then 1-D forging. The microstructure and tensile...
926