date: 2017-03-03T12:39:12Z
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pdf:docinfo:title: Precipitation of T1 and ' Phase in Al-4Cu-1Li-0.25Mn During Age Hardening: Microstructural Investigation and Phase-Field Simulation
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subject: Experimental and phase field studies of age hardening response of a high purity Al-4Cu-1Li-0.25Mn-alloy (mass %) during isothermal aging are conducted. In the experiments, two hardening phases are identified: the tetragonal ' (Al2Cu) phase and the hexagonal T1 (Al2CuLi) phase. Both are plate shaped and of nm size. They are analyzed with respect to the development of their size, number density and volume fraction during aging by applying different analysis techniques in TEM in combination with quantitative microstructural analysis. 3D phase-field simulations of formation and growth of ' phase are performed in which the full interfacial, chemical and elastic energy contributions are taken into account. 2D simulations of T1 phase are also investigated using multi-component diffusion without elasticity. This is a first step toward a complex phase-field study of T1 phase in the ternary alloy. The comparison between experimental and simulated data shows similar trends. The still unsaturated volume fraction indicates that the precipitates are in the growth stage and that the coarsening/ripening stage has not yet been reached.
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dc:title: Precipitation of T1 and ' Phase in Al-4Cu-1Li-0.25Mn During Age Hardening: Microstructural Investigation and Phase-Field Simulation
modified: 2017-03-03T12:39:12Z
cp:subject: Experimental and phase field studies of age hardening response of a high purity Al-4Cu-1Li-0.25Mn-alloy (mass %) during isothermal aging are conducted. In the experiments, two hardening phases are identified: the tetragonal ' (Al2Cu) phase and the hexagonal T1 (Al2CuLi) phase. Both are plate shaped and of nm size. They are analyzed with respect to the development of their size, number density and volume fraction during aging by applying different analysis techniques in TEM in combination with quantitative microstructural analysis. 3D phase-field simulations of formation and growth of ' phase are performed in which the full interfacial, chemical and elastic energy contributions are taken into account. 2D simulations of T1 phase are also investigated using multi-component diffusion without elasticity. This is a first step toward a complex phase-field study of T1 phase in the ternary alloy. The comparison between experimental and simulated data shows similar trends. The still unsaturated volume fraction indicates that the precipitates are in the growth stage and that the coarsening/ripening stage has not yet been reached.
pdf:docinfo:subject: Experimental and phase field studies of age hardening response of a high purity Al-4Cu-1Li-0.25Mn-alloy (mass %) during isothermal aging are conducted. In the experiments, two hardening phases are identified: the tetragonal ' (Al2Cu) phase and the hexagonal T1 (Al2CuLi) phase. Both are plate shaped and of nm size. They are analyzed with respect to the development of their size, number density and volume fraction during aging by applying different analysis techniques in TEM in combination with quantitative microstructural analysis. 3D phase-field simulations of formation and growth of ' phase are performed in which the full interfacial, chemical and elastic energy contributions are taken into account. 2D simulations of T1 phase are also investigated using multi-component diffusion without elasticity. This is a first step toward a complex phase-field study of T1 phase in the ternary alloy. The comparison between experimental and simulated data shows similar trends. The still unsaturated volume fraction indicates that the precipitates are in the growth stage and that the coarsening/ripening stage has not yet been reached.
pdf:docinfo:creator: Ines Häusler, Christian Schwarze, Muhammad Umer Bilal, Daniela Valencia Ramirez, Walid Hetaba, Reza Darvishi Kamachali and Birgit Skrotzki
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Author: Ines Häusler, Christian Schwarze, Muhammad Umer Bilal, Daniela Valencia Ramirez, Walid Hetaba, Reza Darvishi Kamachali and Birgit Skrotzki
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dc:description: Experimental and phase field studies of age hardening response of a high purity Al-4Cu-1Li-0.25Mn-alloy (mass %) during isothermal aging are conducted. In the experiments, two hardening phases are identified: the tetragonal ' (Al2Cu) phase and the hexagonal T1 (Al2CuLi) phase. Both are plate shaped and of nm size. They are analyzed with respect to the development of their size, number density and volume fraction during aging by applying different analysis techniques in TEM in combination with quantitative microstructural analysis. 3D phase-field simulations of formation and growth of ' phase are performed in which the full interfacial, chemical and elastic energy contributions are taken into account. 2D simulations of T1 phase are also investigated using multi-component diffusion without elasticity. This is a first step toward a complex phase-field study of T1 phase in the ternary alloy. The comparison between experimental and simulated data shows similar trends. The still unsaturated volume fraction indicates that the precipitates are in the growth stage and that the coarsening/ripening stage has not yet been reached.
Keywords: Al-Cu-Li-alloy; precipitates; age hardening; volume fraction; number density; microstructure; phase-field modeling; elasticity; multi-component diffusion; growth kinetics
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dc:creator: Ines Häusler, Christian Schwarze, Muhammad Umer Bilal, Daniela Valencia Ramirez, Walid Hetaba, Reza Darvishi Kamachali and Birgit Skrotzki
description: Experimental and phase field studies of age hardening response of a high purity Al-4Cu-1Li-0.25Mn-alloy (mass %) during isothermal aging are conducted. In the experiments, two hardening phases are identified: the tetragonal ' (Al2Cu) phase and the hexagonal T1 (Al2CuLi) phase. Both are plate shaped and of nm size. They are analyzed with respect to the development of their size, number density and volume fraction during aging by applying different analysis techniques in TEM in combination with quantitative microstructural analysis. 3D phase-field simulations of formation and growth of ' phase are performed in which the full interfacial, chemical and elastic energy contributions are taken into account. 2D simulations of T1 phase are also investigated using multi-component diffusion without elasticity. This is a first step toward a complex phase-field study of T1 phase in the ternary alloy. The comparison between experimental and simulated data shows similar trends. The still unsaturated volume fraction indicates that the precipitates are in the growth stage and that the coarsening/ripening stage has not yet been reached.
dcterms:created: 2017-02-10T03:10:47Z
Last-Modified: 2017-03-03T12:39:12Z
dcterms:modified: 2017-03-03T12:39:12Z
title: Precipitation of T1 and ' Phase in Al-4Cu-1Li-0.25Mn During Age Hardening: Microstructural Investigation and Phase-Field Simulation
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pdf:docinfo:keywords: Al-Cu-Li-alloy; precipitates; age hardening; volume fraction; number density; microstructure; phase-field modeling; elasticity; multi-component diffusion; growth kinetics
pdf:docinfo:modified: 2017-03-03T12:39:12Z
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creator: Ines Häusler, Christian Schwarze, Muhammad Umer Bilal, Daniela Valencia Ramirez, Walid Hetaba, Reza Darvishi Kamachali and Birgit Skrotzki
dc:subject: Al-Cu-Li-alloy; precipitates; age hardening; volume fraction; number density; microstructure; phase-field modeling; elasticity; multi-component diffusion; growth kinetics
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meta:keyword: Al-Cu-Li-alloy; precipitates; age hardening; volume fraction; number density; microstructure; phase-field modeling; elasticity; multi-component diffusion; growth kinetics
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pdf:docinfo:created: 2017-02-10T03:10:47Z