Indentation creep in a short fibre-reinforced metal matrix composite

Creep properties of an unreinforced M124 (AlSi12CuMgNi) base alloy and an Al 20 3 (Saffil) fibre reinforced M124+s metal matrix composite (MMC) were investigated by indentation tests performed between 250 and 350°C. It has been found that the creep curve of the base alloy consists of two stages (tra...

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Bibliographic Details
Published inMaterials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 272; no. 1; pp. 145 - 151
Main Authors Cseh, G, Bär, J, Gudladt, H.-J, Lendvai, J, Juhász, A
Format Journal Article
LanguageEnglish
Published Amsterdam Elsevier B.V 15.11.1999
Elsevier
Subjects
Applied sciences
Composite
Creep
Exact sciences and technology
Indentation
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Composite
Creep
Indentation
Fibre fracture
Aluminium base alloys
Fibre reinforced metal
Temperature effect
Metallography
Experimental study
Composite material
Plasticity
Microstructure
Alumina
Activation energy
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Summary:Creep properties of an unreinforced M124 (AlSi12CuMgNi) base alloy and an Al 20 3 (Saffil) fibre reinforced M124+s metal matrix composite (MMC) were investigated by indentation tests performed between 250 and 350°C. It has been found that the creep curve of the base alloy consists of two stages (transient and steady state), whereas the curve of the composite material contains a decelerating third stage as well. This creep behavior is correlated with the changes of the microstructure below the indenter during the deformation process. In the region of steady state creep the stress exponent and the activation energy was determined for both materials.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0921-5093
1873-4936
DOI:10.1016/S0921-5093(99)00466-9