Evaluation of Functional Properties of the Rapidly Solidified Cast AlSi30 Alloy As A Material for Transport Applications

Augustyn, Bogusław; Szymanek, Marcin; Kapinos, Dawid; Nowak, M.; Pakieła, Wojciech

doi:10.1007/978-3-319-48144-9_162

Cited by 5 publications

(5 citation statements)

References 2 publications

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“…Pre-prepared alloys were melted in an induction furnace and then poured into a crucible located in the melt spinner. The casting parameters of the alloys were determined based on previous tests [1,4,10,12] and data from source literature. The alloys tested were cast at: -Constant linear speed of ribbon casting of 30 m/s, -Uniform diameter of the nozzle of 1,2 mm, -Pressure of the gas ejector pushing the metal of 20-40 kPa, -Constant temperature of the crystallizer wheel of 20°C, -Application of a filter with density of 20 ppi.…”

Section: Methodsmentioning

confidence: 99%

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Archives of Metallurgy and Materials

Kapinos,

Szymanek,

Augustyn

et al. 2019

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The article presents research aimed at determining the effect of adding rare earth elements to near-eutectic Al-Si and Al-Si-Ni alloys on the microstructure and mechanical properties of the obtained products. Material for the research was prepared using a melt spinner -a device used for rapid crystallization, casting thin ribbons, which were then subjected in subsequent stages to fragmentation, consolidation and plastic working. The ribbons and extruded rods cast were described in terms of their structure and their strength properties were determined at different measurement temperatures. It was shown that the lightweight materials produced from aluminium alloys using the rapid solidification process have an ultra-fine structure and good strength properties.Analysis under a microscope confirmed that the addition of rare earth alloys Al-Si and Al-Si-Ni causes fragmentation of the microstructure in the tapes produced. The presence of rare earth elements in the alloys tested has an impact on the type and the morphology of the particles of the microstructure's individual components. In addition to the change in particle morphology, the phenomenon of the separation of numerous nanometric particles of intermetallic phases containing rare earth elements was also observed. The change in microstructure caused by the addition of rare earth elements in the form of a mischmetal increases the mechanical properties.

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Section: Methodsmentioning

confidence: 99%

“…In addition, the introduction of some alloy additives allows to increase the stability of the structure and improve the properties at elevated temperatures. Such elements may include silicon, nickel, zirconium, chromium or rare earth elements [1][2][3][4][5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

Kapinos,

Szymanek,

Augustyn

et al. 2019

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“…Introduced to the market, these materials fuelled a dynamic development of the casting and plastic working technologies, while sixties of the past century saw the invention of Rapid Solidification, where during casting the liquid metal solidification rate can reach 10 6 K/s. The solidification rate so high allows obtaining a material with the submicron or amorphous structure [3][4][5][6][7][8]. The basic empirical backgrounds of the process are comprised in the Hall-Petsch equation ( 1) expressing a relationship between the grain size and strength properties of the material obtained:…”

Section: Introductionmentioning

confidence: 99%

“…The product of melt spinning is a thin ribbon, which in the case of alloys cast is characterised by a width comprised in the range of 1400-3500 µm and a thickness of 50-150 µm. In this form it is an intermediate product for further processing steps such as fragmentation, cold compaction, consolidation and hot extrusion yielding the solid components or, eventually, parts shaped by die forging [7,8,[10][11][12]. To improve its strength properties, the alloy is heat treated, e.g.…”

Section: Introductionmentioning

confidence: 99%

The Production of Material with Ultrafine Grain Structure in Al-Zn Alloy in the Process of Rapid Solidification

Szymaneka¹,

Augustyn²,

Kapinos³

et al. 2014

Archives of Foundry Engineering

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In the aluminium alloy family, Al-Zn materials with non-standard chemical composition containing Mg and Cu are a new group of alloys, mainly owing to their high strength properties. Proper choice of alloying elements, and of the method of molten metal treatment and casting enable further shaping of the properties. One of the modern methods to produce materials with submicron structure is a method of Rapid Solidification. The ribbon cast in a melt spinning device is an intermediate product for further plastic working. Using the technique of Rapid Solidification it is not possible to directly produce a solid structural material of the required shape and length. Therefore, the ribbon of an ultrafine grain or nanometric structure must be subjected to the operations of fragmentation, compaction, consolidation and hot extrusion. In this article the authors focussed their attention on the technological aspect of the above mentioned process and described successive stages of the fabrication of an AlZn9Mg2.5Cu1.8 alloy of ultrafine grain structure designated for further plastic working, which enables making extruded rods or elements shaped by the die forging technology. Studies described in the article were performed under variable parameters determined experimentally in the course of the alloy manufacturing process, including casting by RS and subsequent fragmentation.

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“…superheating of alloy, the addition of carbon nucleating elements, Elfinal process (FeCl 3 ), etc., and also through the creation of appropriate conditions for alloy solidification. Rapid Solidification process, in which molten alloy is cast onto a spinning copper wheel ensuring high rate of heat extraction, is one of the techniques enabling the achievement of fine-grained structure [15][16][17][18][19]. The rate of solidification in this method is in a range of 10 4 -10 6 ⁰C/s.…”

Section: Introductionmentioning

confidence: 99%

Formation of Structure and Properties in Casting Processes on the Example of AZ91 Magnesium Alloy

Augustyn¹,

Szymanek²,

Kapinos³

et al. 2014

Archives of Foundry Engineering

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Contemporary materials engineering requires the use of materials characterised by high mechanical properties, as these precisely properties determine the choice of material for parts of machinery and equipment. Owing to these properties it is possible to reduce the weight and, consequently, the consumption of both material and energy. Trying to meet these expectations, the designers are increasingly looking for solutions in the application of magnesium alloys as materials offering a very beneficial strength-to-weight ratio. However, besides alloying elements, the properties are to a great extent shaped by the solidification conditions and related structure. The process of structure formation depends on the choice of casting method forced by the specific properties of casting or by the specific intended use of final product. The article presents a comparison of AZ91 magnesium alloys processed by different casting technologies. A short characteristic was offered for materials processed by the traditional semi-continuous casting process, which uses the solidification rates comprised in a range of 5 - 20°C/s, and for materials made in the process of Rapid Solidification, where the solidification rate can reach 106 °C/s. As a result of the casting process, a feedstock in the form of billets and thin strips was obtained and was subjected next to the process of plastic forming. The article presents the results of structural analysis of the final product. The mechanical properties of the ø7 mm extruded rods were also evaluated and compared.

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Evaluation of Functional Properties of the Rapidly Solidified Cast AlSi30 Alloy As A Material for Transport Applications

Cited by 5 publications

References 2 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

The Production of Material with Ultrafine Grain Structure in Al-Zn Alloy in the Process of Rapid Solidification

Formation of Structure and Properties in Casting Processes on the Example of AZ91 Magnesium Alloy

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