Intergranular Corrosion of Austenitic Stainless Steel
- 1 January 1971
- journal article
- Published by The Electrochemical Society in Journal of the Electrochemical Society
- Vol. 118 (2) , 192-202
- https://doi.org/10.1149/1.2407966
Abstract
The well‐known susceptibility of austenitic stainless steels to intergranular corrosion after heat‐treatment in the temperature range of 550°–800°C (i.e., “sensitization”) has long been attributed to depletion of Cr from regions of the alloy matrix adjacent to grain boundaries in which had precipitated. Those regions of the steel in which the local Cr composition falls below about 12% have a diminished ability to form a passive film and hence corrode preferentially.Keywords
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