Characterization of a New Aluminium Alloy for the Production of Wheels by Hybrid Aluminium Forging

Tocci, Marialaura; Pola, Annalisa; Vecchia, Giovina Marina La; Modigell, Michael

doi:10.1016/j.proeng.2015.06.237

Cited by 21 publications

(8 citation statements)

References 22 publications

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“…As mentioned in the introduction, the chemical composition is between those of the conventional alloys for LPDC and forging. In fact, the alloy under investigation is an Al-Si-Mg alloy developed for the production of truck wheels by a non-conventional hybrid technique [13], combining features of both low pressure die casting (LPDC) and forging processes. Furthermore, Cr and Mn are present as main alloying elements.…”

Section: Methodsmentioning

confidence: 99%

“…Solution and aging treatments were performed in air in laboratory furnaces. Solution temperatures were chosen according to solidus temperature measured by differential scanning calorimetry (DSC) [13], while aging temperatures were selected as suggested by good practice for this group of aluminum alloys [14]. Samples were solution treated for 3 h at 545 °C, T then water quenched at 65 °C [14] and subsequently aged at 165 °C and 190 °C for 1, 2, 4, 6 and 8 h. Between quenching and ageing treatments, the samples were kept at -20 °C in order to avoid natural ageing.…”

Section: Simentioning

confidence: 99%

“…The studied alloy is characterized by the presence of Cr and Mn in order to modify the morphology of intermetallic particles and improve material properties. This alloy was developed for the production of truck wheels by means of a non-conventional hybrid technique, which combines features of both low pressure die casting and forging processes [13]. Nevertheless, the presence of a significant amount of intermetallic phase can still represent a limit to the mechanical performance of the Cr-containing alloy and deeper investigations are needed to evaluate its effect.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Investigation of mechanical properties of AlSi3Cr alloy

Tocci

Pola

Montesano

et al. 2017

Frattura Ed Integrità Strutturale

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In the present paper, microstructural and mechanical properties of an innovative AlSi3Mg alloy were studied. Particularly, the effect of the addition of Cr and Mn on tensile strength and impact toughness was evaluated. In fact, the presence of these elements leads to the formation of an intermetallic phase with a globular or polyhedral morphology. It was therefore investigated the role played by Cr-Mn containing particles in the failure mechanism and the influence of the heat treatment parameters. Moreover, tensile and impact tests were performed on A356 samples in T6 condition, whose results were compared with the performance of the innovative alloy. Considering the static properties, the innovative alloy showed remarkable values of tensile strength, while ductility was improved only after heat treatment optimization. Poor impact toughness values were measured and the microstructural analysis confirmed the presence of coarse intermetallics, acting as crack initiation and propagation particles, on the fracture surfaces.

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Section: Methodsmentioning

confidence: 99%

Section: Simentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Investigation of mechanical properties of AlSi3Cr alloy

Tocci

Pola

Montesano

et al. 2017

Frattura Ed Integrità Strutturale

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“…The 6061 aluminum alloy (Al-Mg-Si) is a mediumstrength wrought alloy, widely used in aviation, automobiles and other fields due to its high formability and corrosion resistance [1][2][3] . Recently, the 6061 aluminum alloy has been used to manufacture wheels, which are mainly made by forging due to the low flow capacity of the alloy [4] . Squeeze casting is a new metal forming method in which pressure is applied to the metals in the mushy zone, so the forming process is simple and could make high-performance products [5] .…”

Section: Introductionmentioning

confidence: 99%

Segregation in squeeze casting 6061 aluminum alloy wheel spokes and its formation mechanism

et al. 2021

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Segregation can seriously damage the mechanical properties of the aluminum alloys. 6061 aluminum alloy wheel spokes were prepared by squeeze casting. To investigate the formation mechanism of segregation, the microstructure of the alloy was observed using scanning electron microscopy, energy dispersive spectrometry, X-ray diffraction and electron microprobe analysis methods. The Gibbs energy of each phase during solidification was calculated by JMatPro. Results show that the segregation phases in the R-joint of the wheel spokes are mainly composed of Mg 2 Si, β-AlFeSi and Al 5 Cu 2 Mg 8 Si 6 intermetallics. During the solidification of the 6061 aluminum alloy wheels, Mg 2 Si and α-AlFeSi phases precipitate in the mushy zone at first. With the decrease of temperature, α-AlFeSi transforms into β-AlFeSi, while Al 5 Cu 2 Mg 8 Si 6 precipitates from the solid-state aluminum alloy after solidification. Segregation at the R-joint of wheel spokes is mainly caused by insufficient cooling, so the cooling during alloy solidification should be enhanced to avoid segregation.

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“…), are produced in the form of castings [ 2 , 5 , 22 ]. Aluminum castings are also used in chassis components, in up to 40% of wheels and mounts, components of brake systems, suspension and steering systems, as well as instrumentation dashboards [ 2 , 5 , 23 , 24 ].…”

Section: Introductionmentioning

confidence: 99%

Non-Standard T6 Heat Treatment of the Casting of the Combustion Engine Cylinder Head

Pezda

Jezierski

2020

Materials

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The introduction of new design solutions of cast components to the powertrain systems of passenger cars has resulted in an increased demand for optimization of mechanical properties obtained during heat treatment, assuring—at the same time—a suitable level of production capacity and limitation of manufacturing costs. In this paper, research results concerning non-standard T6 heat treatment of a combustion engine cylinder head made of AlSi7Cu3Mg alloy are presented. It has been confirmed that the optimal process of heat treatment of this component, taking into consideration the criterion of material hardness, involves solutioning at a temperature of 500 °C for 1 h, and then aging for 2 h at 175 °C. As a result, HBS10/1000/30 hardness in the range of 105–130 was obtained, which means an increase from 35% to 60% in comparison to the as-cast, depending on the position of the measurement and spheroidization of precipitations of eutectic silicon.

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Characterization of a New Aluminium Alloy for the Production of Wheels by Hybrid Aluminium Forging

Cited by 21 publications

References 22 publications

Investigation of mechanical properties of AlSi3Cr alloy

Investigation of mechanical properties of AlSi3Cr alloy

Segregation in squeeze casting 6061 aluminum alloy wheel spokes and its formation mechanism

Non-Standard T6 Heat Treatment of the Casting of the Combustion Engine Cylinder Head

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