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Microstructure and strength modelling of Al-Cu-Mg alloys during non-isothermal treatments: part 1 – controlled heating and cooling

Microstructure and strength modelling of Al-Cu-Mg alloys during non-isothermal treatments: part 1 – controlled heating and cooling
Microstructure and strength modelling of Al-Cu-Mg alloys during non-isothermal treatments: part 1 – controlled heating and cooling
A model is developed to predict the precipitation kinetics and strengthening in Al Cu Mg alloys during non-isothermal treatments consisting of controlled heating and cooling. The prediction of the precipitation kinetics is based on the Kampmann and Wagner model. The precipitation strengthening by the shearable Cu:Mg co clusters is modelled on the basis of the modulus strengthening mechanism and the strengthening by the non-shearable S phase precipitates is based on the Orowan looping mechanism. The model predictions are verified by comparing with hardness, transmission electron microscopy and differential scanning calorimetry data on 2024-T351 aluminium alloys. The microstructural development and strength predictions of the model are generally in close agreement with the experimental data.
aluminium alloys, ageing, modelling, phase transformations, co-clusters, 2024, 2x24, Al-Cu-Mg, DSC, calorimetry, TEM, nucleation, coarsening, GPB zones, guinier-preston zones, precipitation, aerospace alloy
0267-0836
1403-1410
Khan, I.N.
dd43e20e-693d-4f98-bf6b-3b8350ac9f06
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Khan, I.N.
dd43e20e-693d-4f98-bf6b-3b8350ac9f06
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51

Khan, I.N. and Starink, M.J. (2008) Microstructure and strength modelling of Al-Cu-Mg alloys during non-isothermal treatments: part 1 – controlled heating and cooling. Materials Science and Technology, 24, 1403-1410.

Record type: Article

Abstract

A model is developed to predict the precipitation kinetics and strengthening in Al Cu Mg alloys during non-isothermal treatments consisting of controlled heating and cooling. The prediction of the precipitation kinetics is based on the Kampmann and Wagner model. The precipitation strengthening by the shearable Cu:Mg co clusters is modelled on the basis of the modulus strengthening mechanism and the strengthening by the non-shearable S phase precipitates is based on the Orowan looping mechanism. The model predictions are verified by comparing with hardness, transmission electron microscopy and differential scanning calorimetry data on 2024-T351 aluminium alloys. The microstructural development and strength predictions of the model are generally in close agreement with the experimental data.

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Published date: 2008
Keywords: aluminium alloys, ageing, modelling, phase transformations, co-clusters, 2024, 2x24, Al-Cu-Mg, DSC, calorimetry, TEM, nucleation, coarsening, GPB zones, guinier-preston zones, precipitation, aerospace alloy
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 50721
URI: http://eprints.soton.ac.uk/id/eprint/50721
ISSN: 0267-0836
PURE UUID: af9688af-26a3-4377-92e9-e8ec7abf3f5f

Catalogue record

Date deposited: 18 Mar 2008
Last modified: 15 Mar 2024 10:11

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Contributors

Author: I.N. Khan
Author: M.J. Starink

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