Microstructures and mechanical properties of ZA27-Al2O3 composites obtained by powder metallurgy process

Microstructures and mechanical properties of ZA27-Al2O3 composites obtained by powder metallurgy process

This paper describes a study of the microstructures and mechanical properties of Zn matrix composites reinforced by 10 wt.% Al2O3 particles of 0.7 μm average size. Commercial Zn-Al-Cu (ZA27) alloy was gas atomized and the resulting powder was mixed with an Al2O3 powder, and then hot pressed into...

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Bibliographic Details
Main Authors: Božić D., Stašić J., Rajković V.
Format: Article
Language:English
Published: International Institute for the Science of Sintering, Beograd 2011-01-01
Series:Science of Sintering
Subjects:
composite materials
powder metallurgy
microstructure
mechanical properties
Scanning Electron Microscopy (SEM)
Online Access:http://www.doiserbia.nb.rs/img/doi/0350-820X/2011/0350-820X1101063B.pdf
Description
Summary:This paper describes a study of the microstructures and mechanical properties of Zn matrix composites reinforced by 10 wt.% Al2O3 particles of 0.7 μm average size. Commercial Zn-Al-Cu (ZA27) alloy was gas atomized and the resulting powder was mixed with an Al2O3 powder, and then hot pressed into cylindrical pellets. Metal powder and powder mixtures were pressed at 230°C, for 45 min under the pressure of 150 MPa. The compressive strength testing was performed in the temperature range from 20°C to 160°C, with a deformation rate of 2.4×10-3s-1. The microstructures and the fracture surface of the samples were investigated by optical and scanning electron microscopy.
ISSN:0350-820X

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