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Vertical and horizontal directional solidification of Zn-Al and Zn-Ag diluted alloys
(Japan Inst Metals, 2010-10)
Zinc-Aluminum and Zinc-Silver alloys were solidified in horizontal and vertical form and the results obtained analyzed. Thermal parameters such as the cooling rates, the liquidus and solidus interphase velocities, and the ...
Modelo matemático determinístico para previsão da macroestrutura bruta de solidificação
(Escola de Minas, 2008)
Um modelo multifásico determinístico foi implementado para simular a solidificação unidirecional com o objetivo de prever a estrutura de grãos bruta de solidificação. O modelo consiste nas equações macroscópicas de conservação ...
Correlation between thermal parameters, structures, dendritic spacing and corrosion behavior of Zn-Al alloys with columnar to equiaxed transition
(Elsevier Science, 2008-04)
The columnar to equiaxed transition (CET) has been examined for many years and the significance of CET has been treated in several articles. Experimental observations in different alloy systems have shown that the position ...
Columnar joints in the Patino Formation sandstones, Eastern Paraguay: a dynamic interaction between dyke intrusion, quartz dissolution and cooling-induced fractures
(INT UNION GEOLOGICAL SCIENCES, 2008)
The Patino Formation sandstones, which crop out in Aregua neighborhood in Eastern Paraguay and show columnar joints near the contact zone with a nephelinite dyke, have as their main characteristics the high proportion of ...
Silicon refining by a metallurgical processing route
(Ouro Preto, 2013)
Directional solidification experiments were carried out in a Bridgman furnace to remove carbon and metallic impurities from silicon. For carbon removal, solidification was achieved by extracting the mold from the hot into ...
Influência da convecção termossolutal na transição colunar/equiaxial em ligas Al-Si sob condições unidirecionais e transitórias de extração de calorInfluence of thermosolutal convection on columnar/equiaxial transition in Al-Si alloys under unidirectional and transient heat extraction conditions
(Universidade Federal do ParáBrasilInstituto de TecnologiaUFPAPrograma de Pós-Graduação em Engenharia Mecânica, 2014)
Resistencia a la corrosión de aleaciones Al-Cu en biodieselResistance to corrosion of Al-Cu alloy in biodiesel
(Universidade Federal do Rio de Janeiro, 2018-07)
En el presente trabajo se evalúa la susceptibilidad frente a la corrosión en biodiesel de aleaciones Al-Cu soli-dificadas direccionalmente: Al-4,5%Cu y Al-15%Cu (porcentajes en peso), en función al tipo de estructura ...
Estudio de los parámetros térmicos y estructurales en aleaciones AL–ZN Y ZN–AL solidificadas direccionalmenteStudy of thermal and structural parameters in directionally solidified AL-ZN AND ZN-AL alloys
(Universidad Nacional de Misiones. Facultad de Ciencias Exactas, Químicas y Naturales, 2008-12)
Los componentes manufacturados de aleaciones de base aluminio ofrecen la ventaja del bajo costo y de una elevada relación esfuerzo/peso comparadas con las aleaciones ferrosas y las aleaciones Zn–Al (ZA) combinan elevado ...
Wear resistance of dilute Zn-Al alloys
(Elsevier Science, 2010-05-22)
The wear resistance of Zn-Al alloys is determined in pin-on-ring wear tests, as a function of type of structure of the as-cast alloys. Three regions were observed; columnar, equiaxed and columnar-to-equiaxed grain transition. ...