期刊
CORROSION SCIENCE
卷 148, 期 -, 页码 57-70出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2018.11.035
关键词
Aluminium; Severe plastic deformation; Potentiodynamic polarization; SEM/EBSD; Grain boundary misorientation
资金
- National Science Centre, Poland [2015/19/N/ST8/01192]
Present study investigates the effect of microstructure on electrochemical response of commercially pure aluminium. Electrochemical testing included OCP measurements and potentiodynamic polarization. Results reveal insignificant differences for samples with different grain size, shape and fraction of HAGBs. These parameters are assumed as only slightly affecting electrochemical response. Fe-containing intermetallics have the highest impact, as pits nucleate in their vicinity. In examined materials intermetallic particles retained a consistent size and distribution for all samples. Therefore, no difference in electrochemical parameters or number of pits is observed. The only difference is in the shape of the pits, because dissolution occurred along HAGBs.
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