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A model for local proof strength of 2xxx welds

A model for local proof strength of 2xxx welds
A model for local proof strength of 2xxx welds
The microstructure development and resulting hardness and yield strength profiles of Al 2xxx welds are modelled via a combined analysis of primary precipitation, coarsening, resolution, partial/full melting and resolidification and re-precipitation. Local strengthening is dominated by two types of precipitates: the Cu-Mg clusters (or zones) which form at low temperature and dissolve at temperatures above about 230ºC, and the S phase which dominates the reaction at both the maximum and minimum strength locations. The model is compared to microstructural and hardness data from friction stir welded 2024. The combined heat flow-microstructure-strengthening models show hardness predictions that are in line with experimental observations of local hardness variations close to the weld centre line, and different situations of local minima and maxima are reproduced.
friction stir weld, strength, hardness, coarsening, precipitation, clusters, HAZ, heat affected zone, local melting
0873395840
223-243
The Minerals, Metals & Materials Society
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Wang, S.C.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Sinclair, I.
6005f6c1-f478-434e-a52d-d310c18ade0d
Jata, Kumar J.
Mahoney, M.W.
Mishra, R.S.
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Wang, S.C.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Sinclair, I.
6005f6c1-f478-434e-a52d-d310c18ade0d
Jata, Kumar J.
Mahoney, M.W.
Mishra, R.S.

Starink, M.J., Wang, S.C. and Sinclair, I. (2005) A model for local proof strength of 2xxx welds. In, Jata, Kumar J., Mahoney, M.W. and Mishra, R.S. (eds.) Friction stir welding and processing III. 2005 TMS Annual Meeting (13/02/05 - 17/02/05) The Minerals, Metals & Materials Society, pp. 223-243.

Record type: Book Section

Abstract

The microstructure development and resulting hardness and yield strength profiles of Al 2xxx welds are modelled via a combined analysis of primary precipitation, coarsening, resolution, partial/full melting and resolidification and re-precipitation. Local strengthening is dominated by two types of precipitates: the Cu-Mg clusters (or zones) which form at low temperature and dissolve at temperatures above about 230ºC, and the S phase which dominates the reaction at both the maximum and minimum strength locations. The model is compared to microstructural and hardness data from friction stir welded 2024. The combined heat flow-microstructure-strengthening models show hardness predictions that are in line with experimental observations of local hardness variations close to the weld centre line, and different situations of local minima and maxima are reproduced.

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More information

Published date: 2005
Venue - Dates: 2005 TMS Annual Meeting, San Francisco, USA, 2005-02-13 - 2005-02-17
Keywords: friction stir weld, strength, hardness, coarsening, precipitation, clusters, HAZ, heat affected zone, local melting

Identifiers

Local EPrints ID: 23207
URI: http://eprints.soton.ac.uk/id/eprint/23207
ISBN: 0873395840
PURE UUID: d792eaeb-48a8-4770-9398-6d6c6ba3c8fd

Catalogue record

Date deposited: 31 Mar 2006
Last modified: 30 Jan 2024 17:55

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Contributors

Author: M.J. Starink
Author: S.C. Wang
Author: I. Sinclair
Editor: Kumar J. Jata
Editor: M.W. Mahoney
Editor: R.S. Mishra

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