Fe Al Alloys
Mostrando 13-24 de 53 artigos, teses e dissertações.
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13. Enhancement of Mechanical Properties of Aluminum and 2124 Aluminum Alloy by the Addition of Quasicrystalline Phases
A structural and mechanical characterization of pure aluminum and 2124 T6 aluminum alloy reinforced with quasicrystalline phases of composition Al65Cu20Fe15 and Al70.5Pd21Mn8.5 (%at.) were performed. The quasicrystalline phases were synthesized by arc melting and then milled to produce powder of the alloys, which were then mechanical mixed with the starting
Mat. Res.. Publicado em: 25/08/2016
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14. Effect of Rapid Solidification and Addition of Cu3P on the Mechanical Properties of Hypereutectic Al-Si Alloys
The combined processes; rapid solidification, addition of Cu3P compound and heat treatments to improve the mechanical properties of the hypereutectic Al-13Si, Al-20Si and Al-20Si-1.5Fe-0.7Mn alloys (in wt. %) was studied. Optical microscopy and scanning electron microscopy were used to characterize the microstructures. The mechanical properties were evaluate
Mat. Res.. Publicado em: 22/08/2016
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15. Series of Nanocrystalline NiCoAlFe(Cr, Cu, Mo, Ti) High-Entropy Alloys produced by Mechanical Alloying
Abstract The mechanical alloying technique was employed to produce series of high entropy alloys, combining in equiatomic percentage Al, Co, Cr, Cu, Fe, Mo, Ni and Ti. Milling times were 0, 10, 20 and 30 h, and experiments were performed in a high energy ball mill (SPEX-8000M) under argon atmosphere. The structural and microstructural changes due to mechanic
Mat. Res.. Publicado em: 08/08/2016
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16. Microstructural analysis in the Fe-30.5Mn-8.0Al-1.2C and Fe-30.5Mn-2.1Al-1.2C steels upon cold rolling
Abstract Electron backscatter diffraction (EBSD) and electron channeling contrast imaging (ECCI) were used to examine microstructural changes of the austenitic low-density Fe-30.5Mn-8.0Al-1.2C (8Al) and Fe-30.5Mn-2.1Al-1.2C (2Al) (wt.%) steels during cold rolling. As the strain increased, deformation mechanisms, such as stacking faults, slip, mechanical twin
Rem: Rev. Esc. Minas. Publicado em: 2016-06
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17. Evolution of Complex Phases in Al-Fe-Si Systems
Phase transformations and composition of Al-Fe-Si, Al-Co-Si and Al-Ni-Si based rapidly quenched ribbons have been investigated. Different Al-Si based alloys with varying Si content and additions of third metallic element, namely Al80Si20, Al60Si40, Al75Fe5Si20, Al70Fe10Si20, Al75Co5Si20, Al70Co10Si20, Al75Ni5Si20, Al70Ni10Si20 were analyzed. Variation of pha
Mat. Res.. Publicado em: 17/11/2015
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18. The Role of cobalt and nickel intermetallic phases on the mechanical properties and microstructure evolution of Al-Zn-Mg-Cu alloys
In this study, the effects of cobalt and nickel additions on microstructure evolution and mechanical properties of Al-Zn-Mg-Cu alloys produced by chill casting process were investigated. Al-Zn-Mg-Cu aluminum alloys containing Ni and Co additives were homogenized at different heat treatment conditions, aged at 120ºC for 24 h, and retrogressed at 180ºC for 3
Mat. Res.. Publicado em: 2014-12
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19. Effects of cellular growth on fatigue life of directionally solidified hypoeutectic Al-Fe Alloys
Al-Fe hypoeutectic alloys are a family of casting alloys characterized by cell growth, low cost and appreciable formability. It is well known that fatigue strength is a requirement of prime importance considering the nature of load typically observed during operations involving the risers used in oil extraction. The aim of this study is to examine the influe
Mat. Res.. Publicado em: 28/02/2014
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20. Effect of cooling slope and manganese on the microstructure of hypereutectic Al-Si alloy with 2 %Fe
The effect of cooling slope (CS) on the microstructure of hypereutectic Al-22Si-2Fe (% w/w) alloys with 0%, 0.99%, and 1.36% Mn were studied. The results showed that primary Si particles (PSPs), needle-like Fe phases, coarse fishbone-shaped α-Al15(Fe, Mn)3Si2 phases, and eutectic Si could be refined. With such a CS process, the intermetallic compounds in th
Mat. Res.. Publicado em: 06/12/2013
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21. Aluminothermic reduction of Cr2O3 contained in the ash of thermally treated leather waste
In this study the viability of utilising ashes with high chromium oxide content, obtained by thermal treatment of footwear leather waste, in the production of low-carbon ferrochromium alloy (Fe-Cr-LC) by aluminothermic reduction was investigated. The following key-factors were selected for process modelling: the quantity of aluminium (Al) employed in the rea
Braz. J. Chem. Eng.. Publicado em: 2013-03
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22. Resistência à corrosão e simulação numérica da temperatura e tensões induzidas na refusão superficial a laser da liga aerospacial Al1,5% Fe
Neste trabalho a liga aeroespacial Al1,5%Fe foi submetida ao tratamento de refusão superficial a laser (RSL). O processo ocorre através da aplicação localizada da radiação laser com alta densidade de potência, acontecendo um rápido aquecimento e fusão do material irradiado, seguido de um resfriamento com taxas elevadas sendo que a solidificação da
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 31/08/2012
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23. APLICAÇÃO DE CAMPO EFETIVO E DA TÉCNICA DE MONTE CARLO AO ESTUDO DE LIGAS FE-AL. / EFFECTIVE AND FIELD OF APPLICATION OF MONTE CARLO TECHNIQUE TO STUDY OF ALLOY FE-AL.
Neste trabalho, aplicamos o modelo de Ising com diluição por sítios ao estudo das propriedades magnéticas de uma rede cúbica de corpo centrado (do inglês, body centered cubic, bcc), cujos sítios podem ser ocupados por spins. Como aplicação desse estudo, traçamos alguns diagramas de fase da liga Fe-Al, com comparações entre o modelo teórico utili
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/07/2012
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24. Estudo da microestrutura, da textura cristalográfica e da recristalização em chapas obtidas por lingotamento contínuo e semicontínuo da liga de alumínio AA4006. / A study of the microstructure, crystallographic texture, and recrystallization in AA4006 alloy strips produced by twin roll caster and direct chill processes.
A liga de alumínio designada AA4006 é muito utilizada na indústria. É uma liga do sistema Al-Fe-Si, com teores (% em massa) de Si na faixa de 0,8 a 1,2% e Fe entre 0,5 e 0,8%. Apesar de ser bastante utilizada, ela foi pouco estudada. Neste trabalho foi realizado um estudo comparativo da microestrutura e da textura cristalográfica entre chapas da liga AA
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 29/02/2012