Comparing the effect of processing temperature on microstructure and mechanical behavior of (ZrSiO 4 or TiB 2)/aluminum composites

Recently, a large number of metal matrix composites have been developed for high-performance applications. The first requirement for superior performance of a composite material is the homogeneous distribution of the reinforcing phase. In particulate-reinforced composites, any agglomeration of reinf...

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Bibliographic Details
Published in:	Materials science & engineering. A, Structural materials : properties, microstructure and processing Vol. 498; no. 1; pp. 53 - 58
Main Authors:	Abdizadeh, H., Baharvandi, H.R., Moghaddam, K. Shirvani
Format:	Journal Article Conference Proceeding
Language:	English
Published:	Kidlington Elsevier B.V 20-12-2008 Elsevier
Subjects:	Aluminum matrix composites Applied sciences Dispersion hardening metals Elasticity. Plasticity Exact sciences and technology Hardness Mechanical properties Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology Metals. Metallurgy Microstructure MMCs Powder metallurgy. Composite materials Production techniques Reinforcement Stir casting Tensile strength TiB 2 Zircon MMCs Aluminum matrix composites Reinforcement Mechanical properties Stir casting Microstructure Hardness Zircon Tensile strength TiB 2 Zirconium silicate Fabrication property relation Composite material Dispersion strengthened metal Inorganic compound Scanning electron microscopy TiB2 Metal matrix composite Stirring Transition element compounds Aluminium X ray diffraction Tension test Solidification Casting Titanium boride
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Summary:	Recently, a large number of metal matrix composites have been developed for high-performance applications. The first requirement for superior performance of a composite material is the homogeneous distribution of the reinforcing phase. In particulate-reinforced composites, any agglomeration of reinforcement particles deteriorates the mechanical properties of composite. Stir casting route has been used to achieve homogeneity of particle distribution throughout the matrix. In present study, ZrSiO 4 and TiB 2 particles were incorporated in A356.1 alloy. The size of ZrSiO 4 and TiB 2 particles was 1 μm. Reinforcement particles were added to melted aluminum at different temperatures above pure aluminum melting point (750, 850, 950 °C). The volume fraction of reinforcement particles was 5%. After addition of reinforcement, stirring was continued for 12 min for better distribution and better solidification conditions. The microstructure and mechanical behavior of prepared composites were studied. Scanning electron microscopy and X-ray diffraction were used to investigate dispersion of reinforcement particles in aluminum matrix and chemical composition of composites. Hardness and tensile tests were carried out to test mechanical properties. The results of these experiments show that the mechanical properties and microstructure of composites were changed by increasing temperature; also the best condition of ZrSiO 4 case was 750 °C but 850 °C for TiB 2.
Bibliography:	ObjectType-Article-2 SourceType-Scholarly Journals-1 ObjectType-Feature-1 content type line 23
ISSN:	0921-5093 1873-4936
DOI:	10.1016/j.msea.2008.07.009