The effect of average cooling rates on the microstructure of the Al–20% Si high pressure die casting alloy used for monolithic cylinder blocks

Yamagata, Hiroshi; Kasprzak, W.; Aniolek, M.; Kurita, Hirotaka; Sokolowski, J. H.

doi:10.1016/j.jmatprotec.2007.10.023

Cited by 94 publications

(41 citation statements)

References 6 publications

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“…For example, cast components that experience service conditions of high temperature and load, such as engine blocks, are now routinely produced using the Al-Si alloys [1][2][3][4][5][6]. It is understood that as-cast microstructure of the material is much dependent on melt processing in casting operations.…”

Section: Introductionmentioning

confidence: 99%

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Solidification Analysis of Al‐Si Alloys Modified with Addition of Cu Using In‐Situ Neutron Diffraction

Sediako¹,

Kasprzak

Swainson³

et al. 2011

Supplemental Proceedings

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Section: Introductionmentioning

confidence: 99%

“…In published reports [3][4][5]10] thermal analysis was applied for evaluation of solidification kinetics during the non-equilibrium and nearequilibrium conditions. Various attempts have also been undertaken to characterize the solidification process using methods other than thermal analysis.…”

Section: Introductionmentioning

confidence: 99%

Solidification Analysis of Al‐Si Alloys Modified with Addition of Cu Using In‐Situ Neutron Diffraction

Sediako¹,

Kasprzak

Swainson³

et al. 2011

Supplemental Proceedings

Self Cite

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“…2. The water mist was produced in the device (1, 2), which dosed the appropriate amount of water and its dispersion in the air by centrifugal spraying of water in a stream of compressed air (3). Previous work by the author proved that the highest heat flux can be achieved by applying water pressure of 0.35 MPa and air pressure of 0.3 MPA, and water and air proportions of 0.156 l/min and 350 l/min, respectively [6].…”

Section: Methodsmentioning

confidence: 99%

The Effect of Water Mist Cooling of Casting Die on the Solidification, Microstructure and Properties of AlSi20 Alloy

Władysiak¹,

Kozuń²,

Pacyniak³

2017

Archives of Metallurgy and Materials

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Unmodified AlSi20 alloy were casted at the research station, allowing for sequential multipoint cooling using a dedicated computer-controlled program. This method allows for the formation of the microstructure of hypereutectic AlSi20 alloy and also increases hardness. Primary silicon dendrites were found in the microstructure of cooled samples. Based on these dendrites, the formation of primary silicon particles is explained. Cooling of casting die with a water mist stream causes changes in solidification, which leads to expansion of the boundary layer with columnar crystals and shrinkage of the core zone with equiaxed crystals. It also causes more regular hardness distribution around pre-eutectic Si crystals, which can lead to tensile strength and machinability improvement.

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“…These studies reflect world trends in the research of intensive cooling, rapid crystallization, forming of microstructure and properties of aluminum alloys, magnesium and multi-alloyed alloys. [3][4][5][6][7][8][9]. The essence of the research is the efficient cooling by water mist, that intensive cools the mold through evaporation of water droplets on a hot surface of the casting die.…”

Section: Introductionmentioning

confidence: 99%

“…This type of alloy is used for heavy-duty pistons for combustion engines. They have good casting properties, corrosion resistance, good mechanical properties at elevated temperatures, abrasion resistance, low coefficient of abrasion and thermal expansion [6,3]. The paper presents also the possibility of implementing the infrared thermography for analyzing of silumins solidification process by Thermal and Derivative Analysis (TDA-IR) method [1].…”

Section: Introductionmentioning

confidence: 99%

Analysis of Crystallization Process of Intensive Cooled AlSi20CuNiCoMg Alloy

Władysiak

Kozuń

Dębowska

et al. 2017

Archives of Foundry Engineering

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The work is a continuation of research concerning the influence of intensive cooling of permanent mold in order to increase the casting efficiency of aluminium alloys using the multipoint water mist cooling system. The paper presents results of investigation of crystallization process and microstructure of multicomponent synthetic hypereutectic alloy AlSi20CuNiCoMg. The study was conducted for unmodified silumin on the research station allowing the cooling of the special permanent sampler using a program of computer control. Furthermore, the study used a thermal imaging camera to analyze the solidification process of multicomponent alloy. The study demonstrated that the use of mold cooled with water mist stream allows in wide range to form the microstructure of hypereutectic multicomponent silumin. It leads to higher homogeneity of microstructure and refinement of crystallizing phases of casting.

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The effect of average cooling rates on the microstructure of the Al–20% Si high pressure die casting alloy used for monolithic cylinder blocks

Cited by 94 publications

References 6 publications

Solidification Analysis of Al‐Si Alloys Modified with Addition of Cu Using In‐Situ Neutron Diffraction

Solidification Analysis of Al‐Si Alloys Modified with Addition of Cu Using In‐Situ Neutron Diffraction

The Effect of Water Mist Cooling of Casting Die on the Solidification, Microstructure and Properties of AlSi20 Alloy

Analysis of Crystallization Process of Intensive Cooled AlSi20CuNiCoMg Alloy

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