The Metallurgy of Aluminum Alloys for Structural High-Pressure Die Castings

Sigworth, Geoffrey K.; Donahue, Raymond J.

doi:10.1007/s40962-020-00535-x

Cited by 32 publications

(16 citation statements)

References 6 publications

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“…Further details of this exciting new development are available elsewhere. 15,16 Other reviews of possible refining reactions and metal recycling have been presented. [17][18][19] They suggest that we must do a better job of sorting and labeling scrap, and physically removing possible contaminants, for example, by improved shredding and sorting.…”

Section: Manganese Kmentioning

confidence: 99%

Refining of Secondary Aluminum: Important Chemical Factors

Sigworth¹

2021

JOM

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There are important economic and environmental incentives to recycling. Unfortunately, secondary aluminum frequently contains undesirable impurity elements. These limit the amount of secondary material that can be recovered, since the usual practice has been to meet alloy specifications by dilution (that is, by blending with primary metal). In 2019, China curtailed the importation of scrap metal, which changed the scrap market in North America. The price differential between secondary and primary metal suddenly became 20 or 30 cents a pound, sometimes more. This differential was large enough that producers began to ask: ''Is there a refining process we can we use to recover this scrap?'' This paper is an attempt to answer this question. Chemical factors which make it possible (or impossible) to remove an impurity are reviewed in detail. Example calculations are presented and some important alloying elements are considered individually.

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Section: Manganese Kmentioning

confidence: 99%

Refining of Secondary Aluminum: Important Chemical Factors

Sigworth¹

2021

JOM

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“…Sigworth and Donahue [11] recently revised the metallurgy of aluminum alloys for structural high pressure die castings. The alloy most well-known, and in use for the longest time, is the Rheinfelden alloy Silafont ® 36 (AlSi10MnMg alloy).…”

Section: Introductionmentioning

confidence: 99%

“…The alloy most well-known, and in use for the longest time, is the Rheinfelden alloy Silafont ® 36 (AlSi10MnMg alloy). It has been used to produce numerous structural components for more than twenty years [11]. Other companies have developed similar alloys to compete with, or improve upon it.…”

Section: Introductionmentioning

confidence: 99%

“…Rheinfelden has also developed similar alloys. A list of the newer alloys is showed in [11] and includes Castaduct-42 (AlMg4Fe2) alloy as an interesting alloy. AlSi10MnMg alloy provides a wide range of mechanical properties using different heat treatment tempers: T4, T6 or T7.…”

Section: Introductionmentioning

confidence: 99%

“…Thus, the joining process of these VPDC alloys must be carefully chosen and optimized. Self-piercing rivets have been driving material requirements for many applications, such as auto bodies in the past, pushing the use of high elongation materials to obtain crack-free rivets [11]. The limited weldability of VPDC castings in comparison with other high mechanical properties casting processes, such as low pressure or die gravity casting process, is mainly associated with the higher porosity tendency observed in VPDC when high temperatures are applied, as it occurs during heat treatment and/or welding processes.…”

Section: Introductionmentioning

confidence: 99%

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Friction Stir Weldability at High Welding Speed of Two Structural High Pressure Die Casting Aluminum Alloys

Vivas

Fernández-Calvo

Aldanondo

et al. 2022

JMMP

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In this work, the friction stir weldability of two structural high-pressure die casting aluminum alloys designed to manufacture thin-walled automotive components is investigated and compared. AlSi10MnMg and AlMg4Fe2 alloys were friction stir welded at a high welding speed (from 500 to 2000 mm/min) for a fixed rotation speed of 1500 RPM. The investigation was performed by studying the material flow influence on defect formation and microstructure, the mechanical properties of the welds and the forces that act during the friction stir welding process. The AlSi10MnMg alloy shows a lower incidence of defects than the AlMg4Fe2 alloy at all welding speeds investigated. Both materials present a great friction stir welding performance at 500 mm/min with a high joint efficiency in terms of ultimate tensile strength: 92% in AlSi10MnMg alloy and 99% in AlMg4Fe2 alloy.

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Heat Treatment Conditions for High‐Performance High‐Pressure Die‐Cast Al–Si–Cu–Mg Alloy

Demirtaş,

Karakulak,

Babu

2023

Adv Eng Mater

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Random porosity in high‐pressure die castings of aluminum alloys poses additional challenges in the form of blistering during follow‐on heat treatment process. To avoid blisters, the current industrial practice is to lower solution temperature, but this compromises the strength. Herein, kinetics of eutectic Si spheroidization and coarsening during various solution treatment conditions and maximizing the dissolution of much needed Al2Cu and Al5Cu2Mg8Si6 phases, followed by formation of their precipitates in the aging stage with higher particle number densities, are studied and then higher tensile strength of 435 MPa in most commonly used high‐pressure die‐cast Al–Si–Cu–Mg alloy without causing blisters is demonstrated.

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The Metallurgy of Aluminum Alloys for Structural High-Pressure Die Castings

Cited by 32 publications

References 6 publications

Refining of Secondary Aluminum: Important Chemical Factors

Refining of Secondary Aluminum: Important Chemical Factors

Friction Stir Weldability at High Welding Speed of Two Structural High Pressure Die Casting Aluminum Alloys

Heat Treatment Conditions for High‐Performance High‐Pressure Die‐Cast Al–Si–Cu–Mg Alloy

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