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15 - General Engineering

University of Bristol

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Article title

The effect of tensioning and sectioning on residual stresses in aluminium AA7749 friction stir welds

Type

D - Journal article

DOI

10.1016/j.msea.2007.10.055

Title of journal

Materials Science and Engineering, A

Article number

Volume number

488

Issue number

1-2

First page of article

ISSN of journal

0921-5093

Year of publication

2008

URL

http://www.sciencedirect.com/science/article/pii/S0921509307017716

Number of additional authors

Additional information

Residual stresses in welds result in distortion and encourage premature failure. Stretching component during welding is known to alter residual stresses, but process is poorly understood. Work uses high-energy synchrotron X-ray diffraction and finite-element analysis to perform one of first systematic studies of weld tensioning. This establishes, for first time, link between applied stress and resulting residual-stress profiles. Impact of weld sectioning on stress relaxation, an important but neglected area, is also quantified.

Interdisciplinary

Cross-referral requested

Research group

J - Solid Mechanics

Proposed double-weighted

Double-weighted statement

Reserve for a double-weighted output

Non-English

English abstract