Optimization of Squeeze Parameters and Modification of AlSi7Mg Alloy

Zyska, A.; Konopka, Z.; Łągiewka, M.; Nadolski, M.

doi:10.2478/afe-2013-0048

Cited by 16 publications

(13 citation statements)

References 7 publications

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“…al. [2] used two level full-factorial design of experiment to study the effect of squeeze pressure, die temperature and percentage of modifier on percent elongation and tensile strength of squeeze cast components. Further linear and non-linear regression models were successfully applied to establish the input-output relationship in different casting processes, namely cement bonding molding, [3][4], green sand molding [5][6], resin-bonded sand mold [7], sodium-bonded molding system [8], die casting [9][10][11] and evaporative casting process [12].…”

Section: Many Of the Researchers Have Successfully Applied Doe Andmentioning

confidence: 99%

Modeling and Analysis of Mechanical Properties in Structural Steel-DOE Approach

Bhatt

Parappagoudar

2015

Archives of Foundry Engineering

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The present work focuses on the modeling and analysis of mechanical properties of structural steel. The effect of major alloying elements namely carbon, manganese and silicon has been investigated on mechanical properties of structural steel. Design of experiments is used to develop linear models for the responses namely Yield strength, Ultimate tensile strength and Elongation. The experiments have been conducted as per the full factorial design where all process variables are set at two levels. The main effect plots showed that the alloying elements Manganese and Silicon have positive contribution on Ultimate tensile strength and Yield strength. However, Carbon and Manganese showed more contribution as compared to Silicon. All three alloying elements are found to have negative contribution towards the response- Elongation. The present work is found to be useful to control the mechanical properties of structural steel by varying the major alloying elements. Minitab software has been used for statistical analysis. The linear regression models have been tested for the statistical adequacy by utilizing ANOVA and statistical significance test. Further, the prediction capability of the developed models is tested with the help of test cases. It is found that all linear regression models are found to be statistically adequate with good prediction capability. The work is useful to foundrymen to choose alloying elements composition to get desirable mechanical properties.

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Section: Many Of the Researchers Have Successfully Applied Doe Andmentioning

confidence: 99%

Modeling and Analysis of Mechanical Properties in Structural Steel-DOE Approach

Bhatt

Parappagoudar

2015

Archives of Foundry Engineering

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“…Castings produced by this method are also characterized by a smooth surface, no surface defects and a shape very similar to the final product. The cost-effectiveness of the process is also associated with the fact of lower energy and material consumption, even up to 98% of molten metal, by eliminating the gate assembly, strain relief and feeding head [7]. Due to the lack of a running gate system and limited flow of liquid metal, even low-castability plastic alloys can be used in this method, however, it can not be too small, because it leads to casting defects such as cold laps [8,9].…”

Section: Introductionmentioning

confidence: 99%

“…After that time the upper part of the die was lifted up and the casting was ejected by four ejector pins placed in the corners of the slab. The parameters of the squeeze casting process were determined on the basis of previous study[7,13], in which the effect of applied pressures during casting on the tensile strength and solidification of aluminum castings was analyzed. The samples for strength tests were taken in the same way as the internal sample presented in Fig.3.…”

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Comparison of the Porosity of Aluminum Alloys Castings Produced by Squeeze Casting

Zyska¹,

Boroń²

2021

Manufacturing Technology

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The results of researches on porosity and structure of castings from AlMg9, AlSi7Mg and AlCu4Ti alloys produced by squeeze casting and for comparison by gravity die casting are presented. The tests were carried out on 200x100x25mm plates squeeze casted under 90MPa pressure. Prior to the commencement of experimental studies, numerical simulations of solidification were made for the selected alloy (AlSi7Mg) in order to determine the potential locations of shrinkage porosity. As part of the study, the porosity distribution in the plate cast was assessed by taking samples for measurements from the center and edge of the casting. It was found that the area particularly vulnerable to the presence of shrinkage porosity is the central part of the casting and the zone extending from its center to the upper surface. Due to the wide temperature range of solidification of the examined alloys, diffused porosity occurs in castings, and the shape of the pores formed is conditioned on the solidification morphology. The average porosity of squeeze castings is two times smaller than gravity die castings and is at the level of 1.0-1.5% depending on the type of alloy. In addition, as a result of pressing, the shrinkage porosity in the central part of the plate is reduced and its distribution becomes uniform throughout the volume. High pressure acting on solidifying castings ensures a significant increase of grains density in microstructure and decrease of SDAS.

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“…For example, Wang et al [41] reported that the high quality of the squeeze cast aluminum alloy scroll can be obtained using the semi-solid squeeze casting process under optimal parameter values. Hence, many designs of experimentbased investigations have been conducted to determine the optimal squeeze casting process parameters [31,[42][43][44] . This paper presents the outcomes of important past work conducted to examine the performance of squeeze casting technology.…”

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Squeeze casting for metal alloys and composites: An overview of influence of process parameters on mechanical properties and microstructure

2022

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Over the years, squeeze casting technology has progressed from small to large-scale commercial applications. It has been employed in the production of varieties of products ranging from household items to high integrity structural components. This process is suitable for small components weighing up to 30 kg. Currently, parts such as brake calipers, suspension arms, pistons, connecting rods, and automotive wheels, etc., can be produced by squeeze casting [1][2][3] . The squeeze casting has been successfully used to fabricate metallic alloys, bimetals and metal matrix composites (MMC) [4][5][6][7][8][9] . Squeeze casting process involves the solidification of molten metal in a preheated die under squeeze pressure. Substantial material saving, the ability to deal with a wide range of materials, and near-net-shape fabrication are the significant benefits of squeeze casting process [2,[10][11][12] .

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Optimization of Squeeze Parameters and Modification of AlSi7Mg Alloy

Cited by 16 publications

References 7 publications

Modeling and Analysis of Mechanical Properties in Structural Steel-DOE Approach

Modeling and Analysis of Mechanical Properties in Structural Steel-DOE Approach

Comparison of the Porosity of Aluminum Alloys Castings Produced by Squeeze Casting

Squeeze casting for metal alloys and composites: An overview of influence of process parameters on mechanical properties and microstructure

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