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  • Corrosion and creep behaviour of Alloy 800H in sulphidizing/oxidizing/carburizing environments at 700 C - Part I : Corrosion behaviour in the stress free and the stressed state

Abstract

The corrosion behaviour of the austenitic 32Ni-20Cr steel Alloy 800H was investigated in several S-O-C bearing gas mixtures simulating coal gasification environments at 700 C for up to 5000 h. It is shown that relatively small changes in oxygen and sulphur activites can cause a significant change in corrosion behaviour. Moreover, creep deformation leads to a marked enhancement of the corrosive attack which takes place especially along grain boundaries lying perpendicular to the stress axis.

Additional information

Authors: STROOSNIJDER M F, JRC Petten (NL);GUTTMANN V, JRC Petten (NL);DE WIT J H W, Delft University of Technology, Laboratory for Materials Science, Delft (NL)
Bibliographic Reference: Article: Werkstoffe und Korrosion, Vol. 41 (1990) pp. 503-507
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