Search Results - "Rocha, Otávio L"

Solidification thermal parameters, microstructural evolution and dendritic growth in an AlCuNi alloy by Correa, Edinaldo G., Militão, Evandro S., Nascimento, Luiz G., Ferreira, Ivaldo L., Rocha, Otávio L.

“…Unsteady-state upward solidification experiment was carried out with the Al-3Cu-3Ni (wt.%) alloy. Temperature profiles were obtained through a water-cooled…”
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Interconnection of thermal parameters, microstructure, macrosegregation and microhardness of unidirectionally solidified Zn-rich Zn–Ag peritectic alloys by Dias, Marcelino, Brito, Crystopher, Bertelli, Felipe, Rocha, Otávio L., Garcia, Amauri

“…•Transient growth of peritectic Zn–Ag alloys from the melt is experimentally examined.•The microstructure has dispersed dendritic primary crystals in a…”
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Effect of solution time in T6 heat treatment on microstructure and hardness of a directionally solidified Al–Si–Cu alloy by Costa, Thiago A., Dias, Marcelino, Gomes, Laércio G., Rocha, Otávio L., Garcia, Amauri

“…An experimental investigation on the role of solution time during the T6 heat treatment on the scale of the secondary dendrite arm spacing (λ2), morphology and…”
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Interplay Among Cu/Mg Ratio, Microstructure and Microhardness in As-cast and Heat-Treated Al3CuxMg Alloys by Palheta, Mauro, Rodrigues, Helder, Machado, Gabriel, Azevedo, Hugo, Rocha, Otávio L

“…Al3Cu-(xMg) alloys are attractive materials for the aerospace and automotive industries because they are heat treatable and have excellent properties related…”
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Transient heat flow parameters and microstructure of the upward solidified eutectic Al-Si alloy: a theoretical and experimental study by Rocha, Fernando S., Costa, Thiago G., Oliveira, Ailton G., Costa, Thiago A., Ferreira, Ivaldo L., Rocha, Otávio L.

“…In this work, a theoretical and experimental study has been carried out with the eutectic Al12.6Si alloy (wt.%) in order to determine and evaluate the…”
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Correlation Between Unsteady-State Solidification and Electrochemical Corrosion Parameters of an AlSiMg Alloy by Barbosa, Carolina R., Silva, Teyla C., Azevedo, Hugo M., Filho, José C., Moreira, Antonio L., Rocha, Otávio L.

“…Electrochemical corrosion tests were performed on samples of horizontally solidified Al7Si0.3Mg (wt%) alloy. The investigated solidification and corrosion…”
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On an expression for the growth of secondary dendrite arm spacing during non-equilibrium solidification of multicomponent alloys: Validation against ternary aluminum-based alloys by Ferreira, Ivaldo L., Moreira, Antonio L.S., Aviz, Julio A.S., Costa, Thiago A., Rocha, Otávio L., Barros, André S., Garcia, Amauri

“…•An approach is proposed for the growth of secondary dendritic spacings (SDAS) of multicomponent alloys.•SDAS results from directional solidification of…”
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Study of Dry Wear Behavior and Resistance in Samples of a Horizontally Solidified and T6/Heat-Treated Automotive AlSiMg Alloy by Azevedo, Hugo M., Botelho, Tamires M., Barbosa, Carolina R., Sousa, Adrina P., Costa, Thiago A., Rocha, Otávio L.

“…To investigate dry wear behavior in an aluminum-based automotive alloy, transient horizontal solidification experiments using a water-cooled directional…”
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Tailoring of Processing Parameters, Dendritic Microstructure, Si/Intermetallic Particles and Microhardness in As-cast and Heat-Treated Samples of Al7Si0.3Mg Alloy by Barbosa, Carolina R., Machado, Gabriel H., Azevedo, Hugo M., Rocha, Fernando S., Filho, José C., A. Pereira, Arielly, Rocha, Otávio L.

“…In this work, solidification and T6-heat treatment experiments were performed with the Al7Si0.3Mg alloy in order to investigate the effect of processes…”
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Thermal analysis via horizontal solidification of Al3Cu2Si (mass%) alloy: thermal and microstructural parameters, intermetallic compounds and microhardness by Costa, Marlo O., Barbosa, Carolina R., Azevedo, Hugo M., Machado, Gabriel H., Rocha, Fernando S., Moreira, Antonio S., Rocha, Otávio L.

“…A transient horizontal solidification experiment was performed to investigate the role of the thermal parameters, such as growth and cooling rates (GR and CR,…”
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The Role of Si and Cu Alloying Elements on the Dendritic Growth and Microhardness in Horizontally Solidified Binary and Multicomponent Aluminum-Based Alloys by Araújo, Eugênio C., Barros, André S., Kikuchi, Rafael H., Silva, Adrina P., Gonçalves, Fernando A., Moreira, Antonio L., Rocha, Otávio L.

“…Horizontal directional solidification (HDS) experiments were carried out with Al-3wtpctCu, Al-3wtpctSi, and Al- 3wtpctCu-5.5wtpctSi alloys in order to analyze…”
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The Role of Thermal and Microstructural Parameters on Corrosion Resistance of Unsteady-State Horizontally Solidified Aluminum-Copper Hypoeutectic Alloys by Soares, Daniele L., Barros, André S., Dias, Marcelino, Moreira, Antonio L., Filho, José C., Silva, Adrina P., Rocha, Otávio L.

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Unsteady-State Horizontal Solidification of an Al–Si–Cu–Fe Alloy: Relationship Between Thermal Parameters and Microstructure with Mechanical Properties/Fracture Feature by Souza, Fabricio A., Magno, Igor A., Costa, Marlo O., Barros, André S., Nascimento, Jacson M., Carvalho, Diego B., Rocha, Otávio L.

“…Aluminum casting alloys have properties which are of great industrial interest, such as low density, good corrosion resistance, high thermal and electrical…”
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Microstructural Development of an AlNiBi Alloy and Influence of the Transient Horizontal Solidification Parameters on Microhardness by Azevedo, Hugo M., Machado, Gabriel H., Barbosa, Carolina R., Rocha, Fernando S., Costa, Rogério B., Costa, Thiago A., Rocha, Otávio L.

“…The combination of the structural and tribological properties presented by AlNiBi alloys has motivated us to establish, as the main objective of this study,…”
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Determination of heat transfer coefficients at metal–mold interface during horizontal unsteady-state directional solidification of Sn–Pb alloys by Silva, José N., Moutinho, Daniel J., Moreira, Antonio L., Ferreira, Ivaldo L., Rocha, Otávio L.

“…• The prediction of h i is of great interest for the design of the mechanical properties of solidified products. • It is critical for industrial applications…”
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Investigation on microstructural and microhardness evolution in as-cast and T6/heat-treated samples of a horizontally solidified AlSiCu alloy by Souza, Fabrício A., Costa, Marlo O., Magno, Igor A., Nascimento, Jacson M., Silva, Adrina P., Costa, Thiago S., Rocha, Otávio L.

“…In this investigation, in order to evaluate the influence of microstructures on the microhardness of an aluminum-based multicomponent alloy, samples of the…”
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Interconnection between microstructure and microhardness of directionally solidified binary Al-6wt.%Cu and multicomponent Al-6wt.%Cu-8wt.%Si alloys by Vasconcelos, Angela J, Kikuchi, Rafael H, Barros, André S, Costa, Thiago A, Dias, Marcelino, Moreira, Antonio L, Silva, Adrina P, Rocha, Otávio L

“…An experimental study has been carried out to evaluate the microstructural and microhardness evolution on the directionally solidified binary Al-Cu and…”
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Influence of Thermal Parameters, Microstructure, and Morphology of Si on Machinability of an Al–7.0 wt.% Si Alloy Directionally Solidified by Silva, Adrina P., Moreira, Antonio L., Júnior, Paulo M., Guimarães, Emanuelle C., Leal, Layo R. M., Silva, Cássio A. P., Rocha, Otávio L.

“…This study aims to correlate the influence of thermal and microstructural parameters such as growth rate and cooling rate (VL and TR) and secondary dendrite…”
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Heat flow parameters affecting dendrite spacings during unsteady-state solidification of Sn-Pb and Al-Cu alloys by ROCHA, Otavio L, SIQUEIRA, Claudio A, GARCIA, Amauri

“…Solidification thermal parameters and dendrite arm spacings have been measured in hypoeutectic Sn-Pb and Al-Cu alloys solidified under unsteady-state heat flow…”
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The columnar to equiaxed transition during the horizontal directional solidification of Sn–Pb alloys by Silva, José N., Moutinho, Daniel J., Moreira, Antonio L., Ferreira, Ivaldo L., Rocha, Otávio L.

“…Experiments have been carried out to analyze the columnar to equiaxed transition during the horizontal directional solidification of Sn–Pb hypoeutectic alloys…”
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