Microstructures and Mechanical Properties of an Artificially-Aged Al-Mg-Ga Alloy

Myeong Heom Park; Daisuke Terada; Manuel Marya; Nobuhiro Tsuji

doi:10.4028/www.scientific.net/MSF.794-796.1032

Paper Titles

The Role of Vacancies in the Aging of Al-Mg-Si Alloys
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Effect of Low Cu Addition and Thermo-Mechanical History on Precipitation in Al-Mg-Si Alloys
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The Influence of High Plastic Strain on Precipitation from Solid Solution in Third Generation Al-Li Alloys
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Effects of Pre-Aging and Natural Aging on Bake Hardening Behavior in Al-Mg-Si Alloys
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Microstructures and Mechanical Properties of an Artificially-Aged Al-Mg-Ga Alloy
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Investigation of the Precipitation Kinetics of a New Al-Mg-Sc-Zr Alloy
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Strain Induced Rapid Precipitation in Al-Er-Zr Alloy
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A New Ultrahigh Strength Al-Cu-Li Alloy
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Influence of AlCuSc Ternary Phase on the Microstructure and Properties of 1469 Alloy
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HomeMaterials Science ForumMaterials Science Forum Vols. 794-796Microstructures and Mechanical Properties of an...

Microstructures and Mechanical Properties of an Artificially-Aged Al-Mg-Ga Alloy

Abstract:

The microstructures of an Al-Mg-Ga cast alloy have been investigated to fundamentally understand its hardening response during heat-treatment. In as-cast, solution heat-treated, and aged conditions, the alloy is characterized by having a variety of metallurgical phases with unique morphologies and chemical compositions. Micro-hardness indentations subsequent to artificial aging between 50°C and 300°C revealed that the investigated Al-Mg-Ga alloy is capable of Vickers hardness values in excess of 180, therefore demonstrating a remarkably elevated age hardening behavior relative to conventional aluminum alloys. SEM and TEM observations, coupled with DSC analysis with several aging conditions, revealed that hardening is induced by submicron platelet precipitates having the length, width, and density that depend largely on the alloy aging conditions.

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Periodical:

Materials Science Forum (Volumes 794-796)

Pages:

1032-1037

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.794-796.1032

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Online since:

June 2014

Authors:

Myeong Heom Park, Daisuke Terada, Manuel Marya, Nobuhiro Tsuji*

Keywords:

Aging Response, Al-Mg-Ga Alloy, Hardening, Microstructure, Phase

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