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- Title
Interfacial reaction and its influence on the mechanical properties of the ASZ short fibre-reinforced Al alloy composite.
- Authors
Lee, J.-C.; Shim, J.-H.; Seok, H.-K.; Lee, H.-I.
- Abstract
The effect of interfacial reaction on the mechanical properties of the AC8A Al alloy reinforced with ASZ short fibres (ASZ/AC8A composite) was studied. In the ASZ/AC8A composite, the interfacial reaction was observed to proceed between the SiO[sub 2] binder layer and Mg of the matrix to form MgAl[sub 2]O[sub 4] at the interface. Formation of MgAl[sub 2]O[sub 4] was believed to enhance the interfacial bonding strength, resulting in the improved composite strength. However, the interfacial reaction in the ASZ/AC8A composite always took place at the expense of Mg in the matrix, resulting in the composite devoid of the Mg bearing precipitates such as Al[sub 2]CuMg and Mg[sub 2]Si. Interfacial reaction mechanisms were investigated for composites containing various Mg contents. The resultant mechanical properties of the composite were measured to determine the adequate amount of Mg within the composite. Microstructural changes of the composite were observed using transmission electron microcopy and differential scanning calorimetry to provide qualitative analyses on the experimental observations.
- Subjects
FIBROUS composites; ALUMINUM alloys; PISTONS
- Publication
Journal of Microscopy, 2001, Vol 201, Issue 2, p291
- ISSN
0022-2720
- Publication type
Article
- DOI
10.1046/j.1365-2818.2001.00763.x