| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1470294 | Corrosion Science | 2010 | 13 Pages |
Abstract
The spreading of intergranular corrosion was investigated using micrometer scale simulations and experimental verifications on sensitized stainless steel [UNS S30400]. The degree of sensitization, presence of a pit, and applied potential all affected spreading. The inputs used in the simulation were obtained from Fe-XCr(XÂ =Â 10, 12, 14, 16Â wt.%)-Mo-Ni alloys representing various grain boundary Cr depletion levels. Corroding grain boundaries and pits triggered corrosion of nearby sensitized boundaries due to Ohmic potential drop. Large connected clusters of corroding grain boundaries formed at high fractions of Cr-depleted grain boundaries. The metallurgical, electrochemical and geometric conditions for this behavior could be forecasted.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Swati Jain, Noah D. Budiansky, J.L. Hudson, J.R. Scully,