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Investigations on susceptibility to intergranular corrosion of thermo‐mechanically rolled corrosion‐resistant materials 316L and Alloy 825
Author(s) -
Prohaska M.,
Mori G.,
Grill R.,
Tischler G.,
Mitsche S.
Publication year - 2013
Publication title -
materials and corrosion
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.487
H-Index - 55
eISSN - 1521-4176
pISSN - 0947-5117
DOI - 10.1002/maco.201106325
Subject(s) - corrosion , materials science , intergranular corrosion , alloy , metallurgy , microstructure , polarization (electrochemistry) , fabrication , medicine , chemistry , alternative medicine , pathology
The influence of parameters of a thermo‐mechanical rolling process on corrosion properties of materials 316L and Alloy 825 was studied by means of the DL‐EPR‐method and a conventional corrosion test. Prior to polarization measurements, optimization of the DL‐EPR‐method was conducted. SEM was used to characterize microstructure and type of attack before and after corrosion testing. A strong correlation between annual corrosion rates and DL‐EPR‐test results was obtained. Due to the low tendency of both alloys to form corrosion‐promoting precipitates, the applicable range of process parameters for both alloys is large and the fabrication process in general is not critical.