The initiation of stress-corrosion cracks in austenitic stainless steels in hot chloride solutions, hot oxygenated water, and room-temperature acid solutions has been examined. The initiation processes have been characterized by electron microscopy and X-ray microanalysis. Corrosion crevices consisting of Cr-rich corrosion sponge have been found in all the systems studied. The electrochemical reactions of corrosion-sponge formation are clarified. Some effects of the underlying metallurgical structure on corrosion-crevice morphology are also presented. Finally, the differences between the crack initiation and propagation stages are discussed.
|Publication status||Published - 1982|
|MoE publication type||B1 Article in a scientific magazine|
|Event||Conf. on Defects and Crack Initiation in Environment Sensitive Fracture. Newcastle, UK, 12 - 14 Jan. 1981 - |
Duration: 1 Jan 1982 → …
Hänninen, H., & Aho-mantila, I. (1982). Microprocesses in stress corrosion crack initiation in austenitic stainless steels. Metals Technology, 9(2), 109-116. https://doi.org/10.1179/030716982803285864