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


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.

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Description/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.

Item Type: Article
ISSNs: 1359-6462 (print)
Related URLs:
Keywords: transmission electron microscopy, aluminium alloys, recrystallized microstructure, phase transformations, yield strength, fsw, fsp, dislocations, gnd, hardening, grain size
Subjects: T Technology > TN Mining engineering. Metallurgy
Divisions: University Structure - Pre August 2011 > School of Engineering Sciences > Engineering Materials & Surface Engineering
ePrint ID: 48158
Date Deposited: 11 Sep 2007
Last Modified: 15 Aug 2014 08:23
URI: http://eprints.soton.ac.uk/id/eprint/48158

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