Oxide scaling and oxidation-assisted microstructural degradation in weldments steam generator steels

Research output: Chapter in Book/Report/Conference proceedingConference PaperOther

Abstract

'Chromium-Molybdenum' ferritic steels are the most popular materials for construction of steam generators. Microstructure of 'Cr-Mo' steels is highly susceptible to changes due to heat-treatments. This susceptibility is often exploited for improving creep strength of these alloys, via suitable heat treatments, that are employed in order to incorporate changes in grain size and secondary precipitates. This paper presents a general overview of the role of microstructure in various aspects of gaseous oxidation, and the synergistic role of the alloy microstructure and oxidation in deterioration of mechanical properties. In the light of this overview, the paper also presents oxidation kinetics and oxidation-assisted microstructural degradation in the microstructurally different regions of weldments of a common variety of 'Cr-Mo' steel, viz., 2.25Cr-1Mo steel.

Original languageEnglish
Title of host publicationProceedings of the 4th International Conference on Advances in Materials Technology for Fossil Power Plants
Pages485-490
Number of pages6
Publication statusPublished - 1 Dec 2005
Event4th International Conference on Advances in Materials Technology for Fossil Power Plants - Hilton Head Island, United States of America
Duration: 25 Oct 200428 Oct 2004

Publication series

NameProceedings of the 4th International Conference on Advances in Materials Technology for Fossil Power Plants
Volume2005

Conference

Conference4th International Conference on Advances in Materials Technology for Fossil Power Plants
Country/TerritoryUnited States of America
CityHilton Head Island
Period25/10/0428/10/04

Cite this