| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1661213 | Surface and Coatings Technology | 2008 | 12 Pages |
Abstract
Multipass friction stir processing of AA 2219-T87 aluminium alloy to a depth of 2 mm in a 5 mm plate resulted in fine α-Al grains, reduction and dissolution of both eutectic phase (CuAl2) and the strengthening precipitates (CuAl2). Anodic polarization and electrochemical impedance tests in 3.5% NaCl showed an improved corrosion resistance of the processed alloy, which increased with the number of passes. Salt spray and immersion tests also showed improved resistance to corrosion. The increased resistance to corrosion is attributed to the dissolution of CuAl2 particles, which was established by XRD and DSC studies.
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Authors
K. Surekha, B.S. Murty, K. Prasad Rao,