Aluminum Silicon Alloys
Mostrando 1-12 de 12 artigos, teses e dissertações.
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1. Effect of Solidification Processing Parameters and Silicon Content on the Dendritic Spacing and Hardness in Hypoeutectic Al-Si Alloys
Aluminium with silicon as alloying element, form a class of material providing the most significant part of all material casting manufactured materials. These alloys have a wide range of applications in the automotive and aerospace industries. It is widely recognized that moderate addition of silicon to aluminum, significantly improves the resulting mechanic
Mat. Res.. Publicado em: 17/09/2018
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2. Efeito da modificação com estrôncio na microestrutura e nas propriedades mecânicas da liga 356 / Effect of strontium on the microstructure and mechanical properties alloys 356
The properties of aluminum-silicon alloys are strongly dependent on the casting process used, the chemical additions made to control eutectic structure, primary silicon and grain structure, and molten metal treatment to reduce hydrogen gas content and to remove inclusions. Modification treatments transform the flake eutectic silicon into a fibrous form produ
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012
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3. Simulação computacional em camisas de motor construídas em liga de alumínio silício
Automotive cylinder liners are mechanical components with the function of internal coating of the cylinder automotive engines. The liners have been made of cast iron, which meets the necessary requirements. The replacement of parts made of steel/ cast iron in aluminum alloys has been made with advantages not only in reducing weight as well as fuel consumptio
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/09/2011
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4. Fatigue properties and micromechanisms of fracture of an AlSiMg0,6 cast alloy used in diesel engine cylinder head / Propriedades de fadiga e micromecanismos de fratura da liga de aluminio-silicio AlSi7Mg0,6 utilizada em cabeçote de motor diesel
The increase usage of casting aluminum-silicon alloys in the automotive industry is due to reduce weight, fuel consumption, and emissions level. This includes the aluminum-silicon cast alloy EN AlSiMg0.6 (ASTM A357.0) which is used to make Diesel engine cylinder head. It is important to know the impact on the integrity and reliability of this component in th
Publicado em: 2009
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5. Nucleation and growth of austenite/VC eutectic in alloys of the Fe-V-C system. / Nucleação e crescimento do eutético austenita/VC em ligas do sistema Fe-V-C.
The three most commercially important families of alloys for the foundry industry show the formation of faceted/non-faceted eutectics type during solidification: cast irons with graphite (austenite/graphite eutectic), white cast irons (austenite/carbide eutectic) and Al-Si alloys (alfa/silicon eutectic). In the case of white cast irons, the eutectic carbide
Publicado em: 2008
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6. Influência do tratamento térmico e do tipo de reforço nas propriedades de compósitos a base de ligas de alumínio obtidos via metalurgia do pó.
The development of composite materials is a result of the need to conjugate the properties of two or more components in one, thus maximizing the individual properties. The Aluminium Matrix Composites (AMCs) reinforced with hard particles have bulked the sectors of application due to the properties as low density and increased wear resistance. The technique o
Publicado em: 2007
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7. Cristalização do germanio amorfo pelo aluminio : caracterização por espectroscopia Raman / Aluminium induced crystallization of the amorphous germanium : characterization for Raman spectroscopy
This research work studies the microscopic mechanisms leading to the low-temperature crystallization of amorphous germanium (a-Ge) films induced by aluminum. The crystallization process was studied in Al-doped samples and also in multi-layer structures possessing an Al layer sandwiched between the substrate and the a-Ge film. In the case of Al-doped samples,
Publicado em: 2007
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8. Obtenção de pós de tântalo metálico a partir da redução aluminotérmica com ignição a plasma
Metallic tantalum has a high commercial value due to intrinsic properties like excellent ductility, corrosion resistance, high melt and boiling points and good electrical and thermal conductivities. Nowadays, it is mostly used in the manufacture of capacitors, due to excellent dielectric properties of its oxides. In the nature, tantalum occurs in the form of
Publicado em: 2007
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9. Pulsed power modulators for surface treatment by plasma immersion ion implantation
The treatment of surfaces by plasma immersion ion implantation requires pulsed power modulators to provide negative high voltage pulses. To achieve this requirement, we have developed three basic circuit configurations in our laboratory: pulse forming network (PFN), hard-tube pulser (HT) and Blumlein line. In this paper we discuss these three types of circui
Brazilian Journal of Physics. Publicado em: 2004-12
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10. The effects of mechanical alloying on the extrusion process of AA 6061 alloy reinforced with Si3N4
The synthesis of materials by high energy ball milling of powders was first developed for the production of complex oxide dispersion-strengthened nickel alloys for structural, high temperature applications but has been attracting attention in the field of fabrication processes like the production of intermetallic compounds, supersaturated solid solutions, am
Journal of the Brazilian Society of Mechanical Sciences and Engineering. Publicado em: 2003-04
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11. Dissolução eletrolítica de ligas de alumínio em cavacos e determinação dos elementos constituintes por espectrometria de emissão atômica com fonte de pasma (ICP-OES) / Electrolytic dissolution of aluminum alloys (Chip form) and multi-element determination by inductively coupled plasma optical emission spectrometry (ICP-OES)
Several aluminum alloys with different chips size were dissolved using aqua regia (HCl:HNO3,3:1). The residues of the dissolution procedure were either rejected or used in silicon volatilization with hydrofluoric acid before determination of Fe, Cu, Mn, Mg, Cr, Ni, Zn, Pb, Sn, Ti and Zr by ICP-OES. The influence caused by crescent amounts of aluminum in the
Publicado em: 2001
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12. Highly ordered amorphous silicon-carbon alloys obtained by RF PECVD
We have shown that close to stoichiometry RF PECVD amorphous silicon carbon alloys deposited under silane starving plasma conditions exhibit a tendency towards c-SiC chemical order. Motivated by this trend, we further explore the effect of increasing RF power and H2 dilution of the gaseous mixtures, aiming to obtain the amorphous counterpart of c-SiC by the
Brazilian Journal of Physics. Publicado em: 2000