Effects of Si Content and Forging Pressure on the Microstructural and Mechanical Characteristics in Semi-solid Forging of Al-Si-Mg Alloys

Kang, Byung Keun; Sohn, Il

doi:10.1007/s11661-019-05229-6

Cited by 4 publications

(2 citation statements)

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“…The slope of the solid fraction vs temperature curve is described as temperature sensitivity, which is written as dfs/dT [23]. The solid fraction has a high-temperature sensitivity, which indicates that a slight temperature change generates a huge change in the solid fraction, making it difficult to control the solid-liquid melt and get the required microstructure [24].…”

Section: Alloy Propertiesmentioning

confidence: 99%

“…Data such as temperature versus solid percentage and liquidus and solidus temperatures were computed to evaluate the solidification properties within the investigation's compositional range, as shown in (Figure 4). The sensitivity of the solid fraction and solidification range, which are essential parameters for the usability of a semi-solid method for alloys with varied Si concentrations, were assessed using thermodynamic estimations [21,22]. The slope of the solid fraction vs temperature curve is described as temperature sensitivity, which is written as dfs/dT [23].…”

Section: Alloy Propertiesmentioning

confidence: 99%

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Comparison of Microstructure, Density and Shrinkage Porosity for Casting and Rheocasting of AlSi7Mg alloy

Abdulrahman

Gonda²,

Réger³

et al. 2023

Preprint

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With the increasing application of aluminum foundry alloys for automotive and aerospace components, the aluminum industry must pay close attention to component quality and dependability. This article focuses on the interpretation of the relative density and porosity of Al foundry casting and rheocasting alloys AlSi7Mg. The most popular Al-Si alloy grain refinement utilized in the casting and rheocasting processes is AlSi7Mg. The limitations are using comparable density findings to determine the quality of a component of casting or rheocasting state. Two approaches are employed to attain this goal, first the theoretical analysis using the JMatPro software, which offers density distribution results depending on the chemical composition of the aluminum alloy. Second,the experimental Archimedes method, which provides density data on actual aluminum castings alloy. This study advances substantial research on microstructure, grain sizes, form shape factors, theoretical and practical density, shrinkage porosity, casting and rheocasting application samples alloy, and potential industrial applications of AlSi7Mg. The results show that the average grain size is significantly more uniform in the rheocasting comparing to casting average grain size results. In addition, the results from the metallographic image analysis of casting and rheocasting application shows five different zones from the bottom to the top of the sample. Finally, the study observed that the shrinkage porosity in the casting application sample is higher than those of rheocasting application sample.

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Section: Alloy Propertiesmentioning

confidence: 99%