Microprocesses in stress corrosion crack initiation in austenitic stainless steels

Hannu Hänninen, Irina Aho-mantila

Research output: Contribution to journalArticleScientific

10 Citations (Scopus)


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.
Original languageEnglish
Pages (from-to)109-116
JournalMetals Technology
Issue number2
Publication statusPublished - 1982
MoE publication typeB1 Article in a scientific magazine
EventConf. on Defects and Crack Initiation in Environment Sensitive Fracture. Newcastle, UK, 12 - 14 Jan. 1981 -
Duration: 1 Jan 1982 → …


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