Eutectic Al–Si–Cu–Fe–Mn alloys with enhanced mechanical properties at room and elevated temperature

Wang, E.R.; Hui, Xidong; Chen, G.L.

doi:10.1016/j.matdes.2011.04.005

Cited by 122 publications

(37 citation statements)

References 21 publications

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“…The a-Al dendrite is easily teared due to the coarser a-Al dendrite and eutectic silicon. It has been reported that both large and elongated a dendrite or eutectic silicon particles tended to fracture more frequently than spherical dendrite or particles [20][21][22][23][24]. In order to indentify the chemical compositions of the phases marked in Fig.…”

Section: Fracture Characteristicsmentioning

confidence: 99%

Effects of rare earth Er additions on microstructure development and mechanical properties of die-cast ADC12 aluminum alloy

Fu-gang

et al. 2012

Journal of Alloys and Compounds

137

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Section: Fracture Characteristicsmentioning

confidence: 99%

Effects of rare earth Er additions on microstructure development and mechanical properties of die-cast ADC12 aluminum alloy

Fu-gang

et al. 2012

Journal of Alloys and Compounds

137

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“…Rincon et al [13,14] investigated the tensile and deformation behavior of A319 die cast alloy, in both as-cast and heat treated conditions at elevated temperatures up to 400 ºC. Several researchers studied the effect of trace element additions on the strength improvement of Al-Si-Cu-Mg [15][16][17][18], Al-Si-Mg [19], Al-Si-Cu [20] and Al-Si alloys [21] at elevated temperatures. However an understanding of the role of cooling rate, which determines the scale of various microstructural features, on the high temperature behavior of Al-Si based casting alloys is still lacking.…”

Section: Introductionmentioning

confidence: 99%

High temperature tensile deformation behavior and failure mechanisms of an Al–Si–Cu–Mg cast alloy — The microstructural scale effect

2015

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In this study the high temperature tensile deformation behavior of a commercial Al-Si-Cu-Mg cast alloy was investigated. The alloy was cast with two different cooling rates resulted in average secondary dendrite arm spacing of 10 and 25 μm, which are typical of the microstructure scale obtained from high pressure die casting and gravity die casting. Tensile tests were performed at different strain rates (10 -4 s -1 to 10 -1 s -1 ) and over a wide temperature range from ambient temperature to 500 ºC. The fine microstructure had superior tensile strength and ductility compared to the coarse microstructure at any given temperature. The coarse microstructure showed brittle fracture up to 300 ºC; the fracture mode in the fine microstructure was fully ductile above 200 ºC. The fraction of damaged particles was increased by raising the temperature and/or by microstructure coarsening. Cracks arising from damaged particles in the coarse microstructure were linked in a transgranular-dominated fashion even at 500 ºC. However, in the fine microstructure alloy the inter-dendritic fracture path was more prevalent. When the temperature was raised to 300 ºC, the concentration of alloying elements in the dendrites changed. The dissolution rates of Cu-and Mg-bearing phases were higher in the fine microstructure.

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“…For laboratory research, we chose alloy AlSi7Fe1, most commonly used in industry due to its good casting properties. Iron in silumins may present inclusions of intermetallics Al5SiFe in forms plate, significantly reducing mechanical properties and corrosion resistance of castings [1][2][3]. However, getting such a "dirty" alloy is justified due to economic reasons, since secondary metal is used to produce it.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, industrial alloy AlSi7, containing up to 1% of iron, it is of interest for research. The existence of fragile crystals of silicon and Al5FeSi in microstructure causes the low strength of metal [1][2][3]. The microstructure of alloy AlSi7Fe1 in cast state comprises phases Si and Al5SiFe as a component of eutectic (α-Al+Al5SiFe+Si).…”

Section: Introductionmentioning

confidence: 99%

MICROSTRUCTURES, MECHANICAL PROPERTIES INGOT AlSi7Fe1 AFTER BLOWING OXYGEN THROUGH MELT

Finkelstein¹,

Чикова²,

Schaefer³

2017

Acta Metall Slovaca

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The new technology of producing ingot of AlSi7Fe1 high-strength is described. This new technology consists in saturation of melt with hydrogen, with further blowing with oxygen. Studied the microstructure, phase composition and mechanical properties of ingot after blowing oxygen of melt and ingot obtained with the traditional method. Have suggested that in liquid aluminum alloy AlSi7Fe1 because of blowing with oxygen arise refractory particles Al2O3. These particles Al2O3 further in crystallization serve as a modifier of the microstructure of ingot. Mostly observed modifications of eutectic phases. Thus saturation of melt with hydrogen, with further blowing with oxygen provides an increased tensile strength of ingot AlSi7Fe1.

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Eutectic Al–Si–Cu–Fe–Mn alloys with enhanced mechanical properties at room and elevated temperature

Cited by 122 publications

References 21 publications

Effects of rare earth Er additions on microstructure development and mechanical properties of die-cast ADC12 aluminum alloy

Effects of rare earth Er additions on microstructure development and mechanical properties of die-cast ADC12 aluminum alloy

High temperature tensile deformation behavior and failure mechanisms of an Al–Si–Cu–Mg cast alloy — The microstructural scale effect

MICROSTRUCTURES, MECHANICAL PROPERTIES INGOT AlSi7Fe1 AFTER BLOWING OXYGEN THROUGH MELT

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