Optimizing the Pouring Temperature for Semisolid Casting of a Hypereutectic Al–Si Alloy Using the Cooling Slope Plate Method

Shehata, M. M.; El‐Hadad, Shimaa; Moussa, M. E.; El-Shennawy, M.

doi:10.1007/s40962-020-00465-8

Cited by 35 publications

(9 citation statements)

References 29 publications

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“…The effect of reinforcement in improving mechanical and microstructural properties is shown in Table-3 [48][49][50][51][52][53][54][55][56][57][58]. It is observed that the addition of TiB2 in A356 Al-Si alloy restricts eutectic Si growth (coarsening rate reduced by 32%) and refines microstructure which enhances mechanical properties [49] while the addition of B4C results in a decrement in roundness and the average size of α Al particles with improved hardness, elongation and tensile strength of the composite [51].…”

Section: Reinforcement Materialsmentioning

confidence: 99%

“…Base material itself can be used as reinforcement. For example, when A390 was added with Al powder 10% by weight caused the reduction of primary Si size by 70% results in a 20% increment in hardness and 50% decrement in weight loss when processed by the cooling slope method [56]. when solid fraction casting is investigated in the case of AA6061 with added micro nanoparticles of AA6061and compared with the conventional casting method, observation shows better mechanical properties and less porosity [52].…”

Section: Reinforcement Materialsmentioning

confidence: 99%

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The key attributes of processing parameters on semi-solid metal casting: An Overview

2021

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Commercialization of the developed technology is a prime factor for any nation and sector to retain its existence in this global economy. Day by day the technological advancement touching new high in various sectors like the automobile and aircraft industries but high design efficiency is achieved only when it is complemented by appropriate material. In the list newer addition is MMCs (Metal Matrix Composites) which are favorable because of their lower cost achieved by cheaper reinforcement, easy processing, and capabilities of mass production. In recent days, the importance of semi-solid casting has been well accepted among various processing routes for aluminum alloys despite many challenges in terms of process parameters like porosity, agglomeration, non-uniform reinforcement particle distribution, low wettability, and engulfment, and this is a main consideration for the present work. Semi-solid casting is considered to be one of the most important and effective manufacturing processes of aluminum alloy for viable mechanical and metallurgical properties in the current perspective of product requirement and competitiveness. A glimpse of the current status is presented, which shows the potential of the process which can be utilized by the industries for several benefits. In a nutshell, it can be found that process has the capability of alteration by the use of different scraps and also have flexibility according to the processing parameters like stirring, pouring temperature, type of reinforcements, etc.

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Section: Reinforcement Materialsmentioning

confidence: 99%

Section: Reinforcement Materialsmentioning

confidence: 99%

The key attributes of processing parameters on semi-solid metal casting: An Overview

2021

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“…The pouring temperatures in the present work were selected relative to the liquidus temperature of the alloy according to the differential scanning calorimetric (DSC) analysis of 650°C from the previous research. 22 The optimum pouring temperatures in the current experimental work were selected based on the previous research 22 to be 690°C and 710°C for the metallic and sand molds, respectively. Cooling slope plate is constructed of rectangular iron plate with a groove to allow melt flow.…”

Section: Materials and Experimental Proceduresmentioning

confidence: 99%

“…[19][20][21] In a recent research on hypereutectic A390 alloy prepared using CSP, well-refined primary Si particles were obtained and the optimum pouring temperatures were then determined for static mold conditions. 22 In the current work, casting was carried out using the CSP method at the optimum pouring temperatures 690°C and 710°C for the metallic and the sand molds, respectively, obtained in, 22 and then, the molds were mechanically vibrated during filling in order to study the combined effect of both CSP and vibration on the microstructure (size and distribution of primary Si), hardness and wear behavior of an Al-Si alloy (A390).…”

Section: Introductionmentioning

confidence: 99%

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The Combined Effect of Cooling Slope Plate Casting and Mold Vibration on Microstructure, Hardness and Wear Behavior of Al–Si Alloy (A390)

et al. 2020

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Semisolid casting using the cooling slope plate method (CSP) is known to refine the microstructure of hypereutectic aluminum alloys and enhance their mechanical properties. The current research investigates the combined effect of casting using the CSP and mechanical vibration of the mold on microstructure and wear behavior of A390 alloy. After pouring the alloy on the CSP, the mold (sand/ metallic) was vibrated mechanically at 50 Hz during filling and up to solidification. Conventional casting with the same mold vibration conditions was also done for comparison. During CSP casting with mechanical vibration of the mold, the crystal nucleus multiplication inhibits the grain growth, and the dendrite break-up takes place simultaneously, leading to refinement of the microstructure. The double effect of the shear force by melt flow and vibrational turbulence is responsible for fragmentation of the particles. This finding was more pronounced in case of using the sand mold. The quantitative measurements showed that the size of primary Si reduced from * 184 lm for the conventional casting in the sand mold without vibration to * 70 lm when the mold was vibrated and from * 30 lm in case of CSP down to * 20 lm when CSP was followed by mechanical vibration of the mold. However, applying the mechanical vibration after CSP in case of the metallic mold increased the size of primary Si from * 21 to 36 lm. Accordingly, the improvement in the hardness and wear resistance of the CSP samples due to vibration was more significant in case of using the sand mold.

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Microstructural Morphology and Mechanical Properties of Cooling Slope Rheocast A380 Al Alloy

Das

2022

J. of Materi Eng and Perform

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Optimizing the Pouring Temperature for Semisolid Casting of a Hypereutectic Al–Si Alloy Using the Cooling Slope Plate Method

Cited by 35 publications

References 29 publications

The key attributes of processing parameters on semi-solid metal casting: An Overview

The key attributes of processing parameters on semi-solid metal casting: An Overview

The Combined Effect of Cooling Slope Plate Casting and Mold Vibration on Microstructure, Hardness and Wear Behavior of Al–Si Alloy (A390)

Microstructural Morphology and Mechanical Properties of Cooling Slope Rheocast A380 Al Alloy

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