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Residual stress relief in the aluminium alloy 7075

Authors :
Tobias Panzner
Christopher E Truman
Jeremy S. Robinson
Thilo Pirling
Source :
Materials Science and Technology. 33:1765-1775
Publication Year :
2017
Publisher :
Informa UK Limited, 2017.

Abstract

The residual stresses in heat-treated 7075 aluminium alloy blocks have been characterised using two neutron diffraction strain scanning instruments. The influence of uniaxial cold compression on relieving the residual stress has been determined. Systematically increasing the magnitude of cold compression from 1 to 10% has been shown to have a small beneficial effect on the final residual stress distribution, by reducing the magnitude of the range in the triaxial residual stresses. The effect of an overaging precipitation treatment on the residual stress has also been characterised, and this was found to have a significant stress relieving influence (25–40%). A relationship between the width of the {311} diffraction peaks and the amount of cold compression was also observed.

Details

ISSN :
17432847 and 02670836
Volume :
33
Database :
OpenAIRE
Journal :
Materials Science and Technology
Accession number :
edsair.doi.dedup.....b040d2d990463f59700902b6db53122e
Full Text :
https://doi.org/10.1080/02670836.2017.1318243