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The strength of friction stir welded and friction stir processed aluminium alloys

The strength of friction stir welded and friction stir processed aluminium alloys
The strength of friction stir welded and friction stir processed aluminium alloys
Local strength of friction stir (FS) welds and FS processed aluminium alloys in heat treatable aluminium alloys is dominated by precipitation hardening. Strengthening due to stored dislocations is generally limited to 40MPa, and grain size strengthening is generally less than 10MPa. Local crystallographic texture can cause yield strength variation on the order of 5%. Published models for strengthening of FS welds make a range of simplifying assumption which can cause uncertainties in the predictions of up to 50MPa. Possible improvements are explored.
transmission electron microscopy, aluminium alloys, recrystallized microstructure, phase transformations, yield strength, fsw, fsp, dislocations, gnd, hardening, grain size
1359-6462
377-382
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Deschamps, A.
44f85160-030b-4b67-8290-e24d09973824
Wang, S.C.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Deschamps, A.
44f85160-030b-4b67-8290-e24d09973824
Wang, S.C.
8a390e2d-6552-4c7c-a88f-25bf9d6986a6

Starink, M.J., Deschamps, A. and Wang, S.C. (2008) The strength of friction stir welded and friction stir processed aluminium alloys. Scripta Materialia, 58, 377-382.

Record type: Article

Abstract

Local strength of friction stir (FS) welds and FS processed aluminium alloys in heat treatable aluminium alloys is dominated by precipitation hardening. Strengthening due to stored dislocations is generally limited to 40MPa, and grain size strengthening is generally less than 10MPa. Local crystallographic texture can cause yield strength variation on the order of 5%. Published models for strengthening of FS welds make a range of simplifying assumption which can cause uncertainties in the predictions of up to 50MPa. Possible improvements are explored.

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More information

Published date: 2008
Keywords: transmission electron microscopy, aluminium alloys, recrystallized microstructure, phase transformations, yield strength, fsw, fsp, dislocations, gnd, hardening, grain size
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 48158
URI: http://eprints.soton.ac.uk/id/eprint/48158
ISSN: 1359-6462
PURE UUID: ed35dff0-757a-4331-86e8-d60216d82d2e

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Date deposited: 11 Sep 2007
Last modified: 15 Mar 2024 09:43

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Contributors

Author: M.J. Starink
Author: A. Deschamps
Author: S.C. Wang

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