[PDF] Top 20 The modification process of AlSi21CuNi silumin and its effect on change of mechanical properties of the alloy

... Essence of modification of silumins boils to change of form or size of silicon crystals present as eutectic or primary ...sliding properties and high abrasion ... See full document

... starts the cooling process in the ...filling the mold with the liquid metal, and at the latest at the beginning of crystallization of silumin, ... See full document

... from the following starting materials (Table 1): aluminium in grade AR1 (99,96% Al), silicon of 98,5% purity (rest Fe and other elements), copper (99, 98% Cu), nickel (99, 98% Ni) and cast ... See full document

... proportion of lightweight metals used in various industries for applications ranging from automotive components to aerospace parts etc ...improve the microstructure and its inherent ... See full document

... in the grain size, which is reflected in the quantitative ...analysis. The grain area distributions in the projection plane (Fig. 6) and of the grains with a non-planar ... See full document

... based on plastic contrast. For example, to emphasize the central part among the other composition, the architect 'in the middle third of the main wall had arranged an ... See full document

... compositions of microcomponents present in particular samples. The SEM investigations were used to reveal the distribution of graphite and other big ...(TEM), on the other ... See full document

... with the composition of high-aluminium cast iron was superheated to a temperature of 1510°C, and then samples were cast at 1420°C for metallographic ...in the form of ferroalloy ... See full document

... at the alternate sides, of the tangents through the diameter of the circle, and then the line joining these points divides the circle in the ratio ... See full document

... Studying the phenomenon of integration, S. Brucan S. considers that the underlying elements are: 1) natural-material bases that include geography, population and production; 2) social factors ... See full document

... describe and understanding the evaluated of customer and customer behavior (Tuu & Olsen, ...in the sense that any action of a consumer will produce consequences which he ... See full document

... discusses the possibilities of using optical measurements for defining the geometric accuracy of gear wheels casts manufactured in the rapid prototyping ...process. The ... See full document

... from the temperature of casting the bronze to the mould on Figure ...From the introduced cross - section of casts from the probe TDAg, it results that it together ... See full document

... in the 1990s as an issue of growing interest to business, in particular to marketing at both academic and practitioner ...one of the most significant factors in the success ... See full document

... Abstract: The research was carried with the aim to discover the existence of securing the foremost islands and state border region of the Republic of ... See full document

... Murray and Vogel (1997) have investigated the effect of associated CSR practices on consumers and presented similar ...findings. The CSR activities mentioned in the ... See full document

... This process of partial self-determination could concern all substances created by God ex ...accidental properties of x which are produced by it at the irst moment of its ... See full document

... rely on a large panel of matched employer- employee data. Based on administrative files maintained by the federal government in Brazil (Rela¸c˜ao Anual de Informa¸c˜oes Sociais - RAIS ), ... See full document

... for the impact of pressure drop on the human body has been investigated in the present ...studies. The studies has been aimed at personnel (army and mountaineer) who would ... See full document

... Based on the current research of domestic and foreign experts in the i eld of business intelligence, it has been shown that this area has vast potential but is still relatively ... See full document