Sequential Gravity Casting in Functionally Graded Aluminum Alloys Development

Rosso, Mario; Lombardo, Silvia; Gobber, Federico Simone

doi:10.1007/978-3-319-51541-0_106

Cited by 4 publications

(7 citation statements)

References 12 publications

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“…Certainly, the mechanical properties obtained were in line with results of previous work [10], with an increase in the mechanical resistance and the yield strength. Most of the fractures occurred in the AlSi7Mg0.3 region, which has lower mechanical resistance than AlSi12CuNiMg.…”

Section: Discussionsupporting

confidence: 90%

“…As expected [10], most of the fractures happened in the weakest alloy (AlSi7Mg0.3). In just one case (E.t.…”

Section: Fracture Surfacessupporting

confidence: 83%

“…The pouring order depends on the alloy-gap between solidus and liquidus temperatures. As previously demonstrated by DSC analysis (Differential Scanning Calorimetry) and detailed in [10,11], the hypoeutectic alloy (AlSi7Mg0.3) was the first poured composition for its larger gap of solidification ( Figure 1). The DSC curve of the hypoeutectic alloy presents two peaks: the eutectic temperature and the liquidus temperature (as can be seen in Figure 1).…”

Section: Methodssupporting

confidence: 58%

“…Focusing on the combination FGM-automotive applications, and considering the high presence of the aluminum alloys in this sector [8], it is certainly possible to combine the aluminum alloys with the concept of FGM [9][10][11][12]. In fact, aluminum alloys are considered as very interesting materials, because of their lightweight, especially if compared with ferrous alloys, which lead to an important decrease in fuel consumption reducing the polluting emissions, and their high specific resistance and ductility [13,14].…”

Section: Introductionmentioning

confidence: 99%

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Case Study of a Functionally Graded Aluminum Part

Fracchia

Lombardo²,

Rosso

2018

Applied Sciences

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The growing interest in aluminum alloys is due to the excellent ductility and mechanical strength, especially in relation with their lightness. These properties make aluminum alloys one of the most used and competitive materials in the automotive sectors. In fact, at the present day, automotive components must guarantee high mechanical and thermal properties in order to ensure low emissions of the vehicle. Despite that, harsh operating conditions can lead to a rupture in aluminum components, especially if subjected to both thermal and mechanical loads. In this panorama, aluminum functionally graded materials (FGMs) could be introduced, in order to produce a single piece with different properties that fulfill all the piece requirements. In this work, considering the typical application of the aluminum alloys as engine pistons, FGMs are realized by sequential gravity casting with the piston alloy EN AB 48000 and the alloy EN AB 42100. Tensile tests on these bi-metal parts give good results in terms of mechanical strength, elongation rates and alloys bonding.

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Section: Discussionsupporting

confidence: 90%

“…As expected [10], most of the fractures happened in the weakest alloy (AlSi7Mg0.3). In just one case (E.t.…”

Section: Fracture Surfacessupporting

confidence: 83%

Section: Methodssupporting

confidence: 58%

Section: Introductionmentioning

confidence: 99%

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Case Study of a Functionally Graded Aluminum Part

Fracchia

Lombardo²,

Rosso

2018

Applied Sciences

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“…Recent works have suggested the production of aluminum–FGM pistons by gravity casting [23,24,25,26] adopting a dual, functionally graded, composition: EN AC 48000 (AlSi12CuNiMg) in the piston crown ensuring mechanical strength and thermal resistance, and EN AC 42100 (AlSi7Mg0.3) in the piston skirt providing higher ductility. In fact, pistons are commonly made of Silumin alloy EN AC 48000 and are often subjected to fatigue cracking in the skirt because of the low alloy ductility [27,28,29].…”

Section: Introductionmentioning

confidence: 99%

Junction Characterization in a Functionally Graded Aluminum Part

et al. 2019

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Aluminum alloys are widely used to produce automotive components, thanks to their great mechanical properties–to–density ratio. Engine components such as pistons are conventionally produced by casting of Al–Si eutectic alloys (Silumin alloys) such as EN AC 48000. Due to the harsh working conditions and the lower ductility if compared to aluminum–silicon alloys with lower silicon content, pistons made of this alloy are prone to fatigue failures in the skirt region. In order to overcome such limits, the use of a Functionally Graded Material (FGM) in the production of a piston is proposed. The adoption of a functionally graded architecture can maximize the properties of the component in specific areas. A higher level of thermal resistance in the crown of the piston can be achieved with EN AC 48000 (AlSi12CuNiMg), while higher elongation at rupture in the skirt region would be conferred by an EN AC 42100 (AlSi9Mg0.3). The FGM properties are strictly related to the metallurgical bonding between the alloys as well as to the presence of intermetallic phases in the alloys junction. In the present article, the characterization of gravity casted FGM samples based on Al–Si alloys with respect to microstructure and mechanical testing is presented, with a specific focus on the characterization by impact testing of the joint between the two alloys.

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Preparation of functionally graded Al-Fe alloy by mechanical mold vibration

Al-Ethari¹,

Khaqanib²

2023

8TH ENGINEERING AND 2ND INTERNATIONAL CONFERENCE FOR COLLEGE OF ENGINEERING – UNIVERSITY OF BAGHDAD: COEC8-2021 Proceedings

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Sequential Gravity Casting in Functionally Graded Aluminum Alloys Development

Cited by 4 publications

References 12 publications

Case Study of a Functionally Graded Aluminum Part

Case Study of a Functionally Graded Aluminum Part

Junction Characterization in a Functionally Graded Aluminum Part

Preparation of functionally graded Al-Fe alloy by mechanical mold vibration

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