EFFECT OF DISSOLVED OXYGEN LEVEL ON STRESS CORROSION CRACKING SUSCEPTIBILITY OF STRUCTURAL STEELS

Jiheon Jun, Stephen S. Raiman, Rogelio De Las Casas Aranda, Bruce A. Pint

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Stress corrosion cracking (SCC) is a potential risk in structural steels used for steam boilers. To investigate the effect of dissolved oxygen (DO) on SCC susceptibility, three steels, T23, T24 and T91 were annealed at 1065°C and then quenched to create a susceptible microstructure and then exposed in a Jones test to stagnant and circulating water at 200°C with varying DO levels. The results indicated that among the tested steels, the SCC susceptibility was highest in T91 but lowest in T23 which did not exhibit crack initiation with 100 ppb DO. T24 showed no cracking with 50 ppb DO but cracked with 100 ppb DO under these conditions. Based on these results, the next planned step is to monitor crack growth in-situ and determine a critical DO content for each material.

Original languageEnglish
Title of host publicationJoint EPRI-123HiMAT International Conference on Advances in High-Temperature Materials - Proceedings from EPRI's 9th International Conference on Advances in Materials Technology for Fossil Power Plants and the 2nd International 123HiMAT Conference on High-Temperature Materials
EditorsJohn Shingledecker, Masao Takeyama
PublisherASM International
Pages948-952
Number of pages5
ISBN (Electronic)9781627082716
DOIs
StatePublished - 2019
EventJoint 9th International Conference on Advances in Materials Technology for Fossil Power Plants, EPRI 2019 and the 2nd International 123HiMAT Conference on High-Temperature Materials - Nagasaki, Japan
Duration: Oct 21 2019Oct 24 2019

Publication series

NameJoint EPRI-123HiMAT International Conference on Advances in High-Temperature Materials - Proceedings from EPRI's 9th International Conference on Advances in Materials Technology for Fossil Power Plants and the 2nd International 123HiMAT Conference on High-Temperature Materials

Conference

ConferenceJoint 9th International Conference on Advances in Materials Technology for Fossil Power Plants, EPRI 2019 and the 2nd International 123HiMAT Conference on High-Temperature Materials
Country/TerritoryJapan
CityNagasaki
Period10/21/1910/24/19

Keywords

  • corrosion
  • CSEF steel
  • dissolved oxygen
  • SCC
  • steam boilers

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