Surekha, K. ; Murty, B. S. ; Prasad Rao, K. (2008) Microstructural characterization and corrosion behavior of multipass friction stir processed AA2219 aluminium alloy Surface and Coatings Technology, 202 (17). pp. 4057-4068. ISSN 0257-8972
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Official URL: http://www.sciencedirect.com/science/article/pii/S...
Related URL: http://dx.doi.org/10.1016/j.surfcoat.2008.02.001
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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| Keywords: | Friction Stir Processing; AA2219 Aluminium Alloy; Corrosion |
| ID Code: | 73817 |
| Deposited On: | 07 Dec 2011 05:02 |
| Last Modified: | 07 Dec 2011 05:06 |
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