Achieving superior corrosion resistance in friction stir processed AA6005-T6 aluminum alloy joints
Paper i proceeding, 2015

In this study, ultra-fine grained (UFG) structure was produced in the stir zone (SZ) of AA6005-T6 alloy joints using friction stir processing (FSP) cooled by liquid nitrogen (N 2 ). Conventional friction stir welding (FSW) was used to fabricate reference joints. The corrosion properties of the cooled joints were investigated by atmospheric corrosion tests. The corrosion exposures were carried out at a relative humidity (RH) of 95%, 400 ppm CO 2 and at 22°C. The rapidly cooled joints exhibited exceptional corrosion resistance in both corrosion experiments as well as better mechanical properties compared to those of the FSWed joints. The better corrosion resistance of the quenched sample was attributed to the microstructural modification of the joint.

Författare

Mohsen Esmaily

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

D. B. Blucher

SINTEF Materials and Chemistry

Jan-Erik Svensson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

M. Halvarsson

SINTEF Materials and Chemistry

Lars-Gunnar Johansson

Chalmers, Kemi och kemiteknik, Energi och material, Oorganisk miljökemi

ECS Transactions

1938-5862 (ISSN) 1938-6737 (eISSN)

Vol. 64 29-43

DOI

10.1149/06426.0029ecst

ISBN

978-160768539-5