MICROSTRUCTURE FORMATION OF AN AXIS-SYMMETRICAL DETAIL AlSi7Mg CAST WITH A LOW AND COUNTER PRESSURE METHODS

R.KOVACHEVA; R.LAZAROVA-MANCHEVA; I.KATZAROV

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MICROSTRUCTURE FORMATION OF AN AXIS-SYMMETRICAL DETAIL AlSi7Mg CAST WITH A LOW AND COUNTER PRESSURE METHODS

机译：低压和反压方法制得的轴对称对称AlSi7Mg铸件的显微组织

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The microstructures of 10 hemispheres cast from AlSi7Mg alloy with a low and counter pressure at different molten metal and mould temperatures and various pressure differences are investigated. The secondary dendrites arm spacings (DAS),,local crystallisation times(LCT),Si-particles sizes and porosity are determined. A numerical simulation of the porosity formation is carried out. A simple criterion, which is taking into account the temperatures of both the molten metal and the mould in the First moment of the mould filling, is created. It offers a possibility for an evaluation of the influence of the thermal conditions on the structure formation of the hemispheres.

机译：研究了由AlSi7Mg合金铸造的10个半球的微观结构，该合金在不同的熔融金属和铸模温度下以及不同的压差下具有低压和反向压力。确定了二次枝晶臂间距（DAS），局部结晶时间（LCT），硅颗粒尺寸和孔隙率。进行了孔隙形成的数值模拟。建立了一个简单的标准，该标准考虑了在模具填充的第一瞬间熔融金属和模具的温度。这为评估热条件对半球结构形成的影响提供了可能性。

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《Aluminium》 |1999年第7期|610-614|共5页
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R.KOVACHEVA; R.LAZAROVA-MANCHEVA; I.KATZAROV;
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1. Influence of Age Hardening Parameters on the Microstructure and Properties of the AlSi7Mg Sand Cast Alloy / Wp?yw Parametrów Utwardzania Wydzieleniowego Na Struktur? I W ?a?ciwo?ci Stopu Alsi7mg [J] . A. Kie?bus, B. Dybowski, K. Rodak, Archives of Metallurgy and Materials . 2016,第4期

机译：时效硬化参数对AlSi7Mg砂铸合金的组织和性能的影响。 Alsi7mg合金的制备与性能
2. Influence of Age Hardening Parameters on the Microstructure and Properties of the AlSi7Mg Sand Cast Alloy / Wp?yw Parametrów Utwardzania Wydzieleniowego Na Struktur? I W ?a?ciwo?ci Stopu Alsi7mg [J] . ?. Poloczek, B. Dybowski, K. Rodak, Archives of Metallurgy and Materials . 2016,第4期

机译：时效硬化参数对AlSi7Mg砂铸合金的组织和性能的影响。 Alsi7mg合金的制备与性能
3. INFLUENCE OF AGE HARDENING PARAMETERS ON THE MICROSTRUCTURE AND PROPERTIES OF THE AlSi7Mg SAND CAST ALLOY [J] . Poloczek L., Dybowski B., Rodak K., Archives of Metallurgy and Materials . 2015,第4aPta1期

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4. MICROSTRUCTURE EVALUATION AND MICROPOROSITY FORMATION IN AlSi7Mg 0.3 ALLOYS [C] . Petru Moldovan, Gabriela Popescu, Gheorghe Dobra, 132nd TMS Annual Meeting, Mar 2-6, 2003, San Diego, California . 2003

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5. The influence of microstructure on the hot ductility of four low carbon steels with respect to transverse crack formation in continuously cast slabs. [D] . Cardoso, Geraldo I. S. L. 1990

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MICROSTRUCTURE FORMATION OF AN AXIS-SYMMETRICAL DETAIL AlSi7Mg CAST WITH A LOW AND COUNTER PRESSURE METHODS

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