Influence of grain boundaries misorientation angle on intergranular corrosion in 2024-T3 aluminium

Open access


The special attention has been paid to the influence of misorientation angle of a random grain boundary (GB) on susceptibility to intergranular attack. The detailed observations of the microstructure of the intergranular corrosion (IGC) in 2024-T3 aluminium alloy (AA2024-T3) subjected to galvanic corrosion tests in two different solutions containing chloride ions (0.1 M and 0.5 M NaCl) were carried out using Scanning Electron Microscopy (SEM). The Electron Backscattered Diffraction (EBSD) technique was used to determine the grain boundary character distribution (GBCD) in the initial sample and a GBCD of corroded grain boundaries on a sample subjected to the corrosion test. The results are discussed in terms of the influence of the misorientation angle on the susceptibility of the grain boundaries to corrosion.

[1] VARGEL Ch., Corrosion of aluminium, Elsevier, 2004

[2] DAVIES J.R., Corrosion of Aluminum and Aluminum Alloys, ASM International, 1999

[3] ZHANG W., FRANKEL G.S., Electrochimica Acta, 48 (2003), 1193

[4] GUILLAUMIN V., MANKOWSKI G., Corrosion Science, 41 (1999), 421

[5] KIM S.H., ERB U., AUST K.T. and PALUMBO G., Scripta mater., 44 (2001), 835

[6] LIN P., PALUMBO G., ERB U. and AUST K.T, Scripta Metall. Mater., 33 (1995), 1387

[7] PALUMBO G., AUST K.T., LECHOCKEY E.M., ERB U. and LIN P., Scripta Mater., 38 (1998), 1685

[8] LECHOCKEY E.M., PALUMBO G., LIN P. and BRENNENSTUHL A.M., Met. Mater. Trans. 29A (1998), 387

[9] PALUMBO G., AUST K. T., Acta Metall. Mater. 38 (1990), 2343

[10] LECHOCKEY EM., PALUMBO G., LIN P. and BRENNENSTUHL A.M., Scripta Materialia 36 (1997), 1211

[11] BRANDON D.G., Acta Metall. 14 (1966), 1479

[12] GALVELE J.R., DE MICHELI S.M., Corros. Sci. 10 (1970), 795

Journal Information

IMPACT FACTOR 2017: 0.854
5-year IMPACT FACTOR: 0.794

CiteScore 2016: 0.64

SCImago Journal Rank (SJR) 2015: 0.226
Source Normalized Impact per Paper (SNIP) 2015: 0.431


All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 27 27 11
PDF Downloads 5 5 3