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- Title
Influence of Cooling Media on the Electrochemical Behavior of Friction Stir Processed Al2014 Alloy.
- Authors
Satyanarayana, M. V. N. V.; Manohar, G.; Jain, Vikram Kumar S.; Kumar, Kethavath Kranthi; Kumar, Adepu; Sundar, Saravana
- Abstract
The current work investigates the influence of different cooling media (i.e., air, dry ice, and water) on the electrochemical behavior of friction stir processing (FSP) of Al2014 alloy. After FSP, recrystallized fine grains were developed in the stir zone due to severe plastic deformation and dynamic recrystallization. The average grain size in air-cooled, dry ice-cooled, and water-cooled FSPed samples were found to be 4.6 ± 3.2 µm, 4.1 ± 2.8 µm, and 0.89 ± 0.6 µm, respectively. Due to the faster cooling effect, grain coarsening was inhibited, resulting in the development of the ultrafine grain (UFG) structure in a water-cooled FSP sample. The stirring action of the tool causes the fragmentation of Al2Cu precipitates into fine and discontinuous particles after FSP, and water-cooled FSP (~ 0.7 μm) resulted in very fine precipitates compared with air-cooled (~ 0.92 μm) and dry ice-cooled FSP (~ 0.8 μm). The corrosion findings showed that the corrosion resistance was enhanced after FSP (ECOR = − 851 mV) due to the formation of homogeneously formed refined grain structure and discontinued fine Al2Cu precipitates. Among the FSP samples, better corrosion resistance was obtained for the water-cooled FSP sample (ECOR = − 685 mV) due to the formation of UFG structure and very fine precipitates.
- Subjects
FRICTION stir processing; DRY ice; PARTICULATE matter; ALLOYS; RECRYSTALLIZATION (Metallurgy)
- Publication
JOM: The Journal of The Minerals, Metals & Materials Society (TMS), 2023, Vol 75, Issue 2, p526
- ISSN
1047-4838
- Publication type
Article
- DOI
10.1007/s11837-022-05611-7