Metallurgy, Vol. 57 No. 1-2, 2018.
Original scientific paper
High temperature and stress corrosion cracking of 310S austenitic stainless steel in wet chloride corrosive environment
T. Pornpibunsompop
orcid.org/0000-0002-2271-742X
; Division of Materials Technology, School of Energy, Environment and Materials, King Mongkut’s University of Technology Thonburi, Thailand
P. Thanakijkasem
; Division of Materials Technology, School of Energy, Environment and Materials, King Mongkut’s University of Technology Thonburi, Thailand
Abstract
High temperature corrosion and stress corrosion cracking of 310S austenitic stainless steel in wet chloride environment at a high temperature was investigated. The result showed that high temperature corrosion products mostly consisted of ferrous oxides and chromium oxides. Chloride ions attacked a chromium passive film and strongly reacted with iron and chromium. As a result of metal chlorides being volatized, tunnel of pores inside corrosion layer existed. Intergranular stress corrosion cracking was observed. The oxide originated on surface could act as a crack initiator and a crack propagation would progress along grain boundaries and particularly along tunnel of pores.
Keywords
high temperature corrosion; stress corrosion cracking; austenitic stainless steel; chloride environment; x-ray methods
Hrčak ID:
189370
URI
Publication date:
1.1.2018.
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