The effect of grain size and grain boundary misorientation on the corrosion resistance of commercially pure aluminium

Marta Orłowska , Ewa Ura-Bińczyk , Lech Olejnik , Małgorzata Lewandowska

Abstract

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
Author Marta Orłowska - Politechnika Warszawska - WIM, Wydział Inżynierii Materiałowej
Marta Orłowska,,
-
, Ewa Ura-Bińczyk (FMSE / DMD)
Ewa Ura-Bińczyk,,
- Division of Materials Design
, Lech Olejnik (FPE / IoMP)
Lech Olejnik,,
- The Institute of Manufacturing Processes
, Małgorzata Lewandowska (FMSE / DMD)
Małgorzata Lewandowska,,
- Division of Materials Design
Journal seriesCorrosion Science, ISSN 0010-938X, (A 45 pkt)
Issue year2019
Vol148
Pages57-70
Publication size in sheets0.65
Keywords in EnglishAluminium, Severe plastic deformation, Potentiodynamic polarization, SEM/EBSD, Grain boundary misorientation
ASJC Classification2500 General Materials Science; 1500 General Chemical Engineering; 1600 General Chemistry
DOIDOI:10.1016/j.corsci.2018.11.035
Languageen angielski
File
2019 Corrosion Science Orłowska.pdf 13.76 MB
Score (nominal)45
ScoreMinisterial score = 45.0, 05-09-2019, ArticleFromJournal
Publication indicators WoS Citations = 0; Scopus SNIP (Source Normalised Impact per Paper): 2016 = 2.307; WoS Impact Factor: 2017 = 4.862 (2) - 2017=5.238 (5)
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