Influence of natural aging on the precipitation hardening of an AlMgSi alloy

Cuniberti, A.; Tolley, A.; Riglos, María Victoria Castro; Giovachini, Ricardo

doi:10.1016/j.msea.2010.05.003

Cited by 93 publications

(55 citation statements)

References 20 publications

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“…We omitted data for which quoted compositions were inconsistent with specifications (e.g. data on 6082 in [58]), where yield strength data was inconsistent between different sources (6082 T4) and alloys for which full solutionising of Mg 2 Si is not achieved in regular T4 tempers (e.g. 6066).…”

Section: Strength and Hardness Model Predictions Based On The Co-clusmentioning

confidence: 99%

A model for the thermodynamics of and strengthening due to co-clusters in Al–Mg–Si-based alloys

2012

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An expanded model for the thermodynamics of co-clusters and their strengthening is presented, and the model is applied to predict co-cluster formation and strengthening in AlMg-Si alloys. The models are tested against data on a wide range of Al-Mg-Si alloys aged at room temperature. The strengthening due to co-clusters is predicted well. The formation of the co-clusters is studied in an Al-0.5at%Mg-1at%Si alloy using three-dimensional atom probe analysis. The results correspond well with the model. It is shown that in general, (shortrange) order strengthening due to co-clusters will be the main strengthening mechanism in these alloys. Apart from the co-clusters, Si clusters also form, but due to their low enthalpy of formation, they contribute little to the strength.

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Section: Strength and Hardness Model Predictions Based On The Co-clusmentioning

confidence: 99%

A model for the thermodynamics of and strengthening due to co-clusters in Al–Mg–Si-based alloys

2012

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“…With this in mind, the chapter treaties with the solidification physics, that related the maturity of physically based models of the understanding of AlMg and AlMgSi microstructures. The effect of magnesium as microalloying element has a pronounced solid solubility in aluminum, which develops a high precipitation-hardening capability [2]. The outstanding attributes to AlMg base alloy can increase the motivation to substitute some ferrous alloys with lightweight aluminum-magnesium alloys.…”

Section: Introductionmentioning

confidence: 99%

Solidification Physics and Microstructure: A Study of AlMg and AlMgSi Alloys by Vortex Method

Rodríguez¹,

Martı́nez²,

Canul³

2018

Solidification

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Physical properties on solidification process deal with the internal atomic arrangement, named generally microstructure. The microstructure characteristic is essential for the properties of metallic materials, including binary, ternary or eutectic alloys. Thus, despite significant progress on microstructural evolution, numerous challenges still exist for revealing the internal structure to act synergistically with matrix alloy chemical components. It is well known that the internal microstructure of an alloy controls and modifies the nature, interaction type and properties of the existing defects and final applications.At this point, necessary understanding of the correlation between equilibrium and nonequilibrium effects, surface energy and chemical potential for the time of the structures formation is probably the key to solidification that can help to predict the complex of microstructures. For the case of multi-phase solidification, AlMgSi alloy involves thousands of atoms, at the atomic scale, that transit to microstructures while the solid-liquid phase transformation occurs. This chapter outlines the role of solidification physics, and the atomic arrangement is believed to have in influencing mechanical hardness properties and degradation resistance.

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“…The alloys AA6082-T6 is high strength Al-Mg-Si alloys that contain manganese to increase ductility and toughness [2]. Cuniberti et al [3] have reported that, artificial aging of Al-Mg-Si alloy for 30 min at 180 °C after solution treatment resulted in a significant increase in yield strength and loss of ductility, due to the rapid precipitation of the β′′ intermediate phase [3]. The β′′ precipitates have fine needle type morphology, with the major axis in the <100> directions of the aluminum matrix [3].…”

Section: Introductionmentioning

confidence: 99%

“…Cuniberti et al [3] have reported that, artificial aging of Al-Mg-Si alloy for 30 min at 180 °C after solution treatment resulted in a significant increase in yield strength and loss of ductility, due to the rapid precipitation of the β′′ intermediate phase [3]. The β′′ precipitates have fine needle type morphology, with the major axis in the <100> directions of the aluminum matrix [3]. The β′′ phase has a composition of Mg 5 Si 6 and has monoclinic C-centred structure and is fully coherent in <100> direction [4].…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Proportion of Duplex Fiber Texture of Aluminium Magnesium Silicon Alloy

Chopkar¹

2017

MSEIJ

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In the present study, an attempt has been made to understand the texture evolution of Aluminium alloy 6082-T6 after different aging heat treatment process. Effects of heat treatment in controlling the variation and domination of one fiber texture over the other in a duplex fiber texture have been observed. Texture studies were carried out with ND direction parallel to direction of extrusion. Solutionised and aged samples have shown the variations in volume fraction of <100> and <111> fibre due to effect of re-crystallization and precipitation. The presence of clusters of solutes and β′′ precipitates alters the proportion of volume fraction of <100> and <111> duplex fibers. Peak aged samples showed significant strengthening of <100> fiber as compared to solutionised and aged samples.

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Influence of natural aging on the precipitation hardening of an AlMgSi alloy

Cited by 93 publications

References 20 publications

A model for the thermodynamics of and strengthening due to co-clusters in Al–Mg–Si-based alloys

A model for the thermodynamics of and strengthening due to co-clusters in Al–Mg–Si-based alloys

Solidification Physics and Microstructure: A Study of AlMg and AlMgSi Alloys by Vortex Method

Effect of Heat Treatment on Proportion of Duplex Fiber Texture of Aluminium Magnesium Silicon Alloy

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