A microstructure-based mechanism of cracking in high temperature hydrogen attack

M. L. Martin, M. Dadfarnia, S. Orwig, D. Moore, Petros Athanasios Sofronis

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

High Temperature Hydrogen Attack (HTHA) of steels plagues higher temperature industrial applications, especially in the petrochemical industry, due to the lack of a mechanistic understanding of the phenomenon and the use of empirically established design criteria, such as the Nelson curves. By using advanced microscopy techniques to explore the microstructure immediately ahead of crack tips and along cavitated grain boundaries, we gained a better understanding of the physical processes occurring early during the HTHA damage process, which can guide the development of models for the degradation process accounting for methane formation and creep cavitation. The results confirm the fundamentals of previously proposed models, but also provide finer details than have been previously known. Based on the underlying deformation and grain boundary fracture, we propose a model for material failure underlying HTHA.

Original languageEnglish
Pages (from-to)300-304
Number of pages5
JournalActa Materialia
Volume140
DOIs
Publication statusPublished - Nov 1 2017

Fingerprint

Hydrogen
Microstructure
Grain boundaries
High temperature applications
Steel
Methane
Cavitation
Petrochemicals
Crack tips
Temperature
Industrial applications
Microscopic examination
Creep
Degradation
Industry

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Ceramics and Composites
  • Polymers and Plastics
  • Metals and Alloys

Cite this

A microstructure-based mechanism of cracking in high temperature hydrogen attack. / Martin, M. L.; Dadfarnia, M.; Orwig, S.; Moore, D.; Sofronis, Petros Athanasios.

In: Acta Materialia, Vol. 140, 01.11.2017, p. 300-304.

Research output: Contribution to journalArticle

Martin, M. L. ; Dadfarnia, M. ; Orwig, S. ; Moore, D. ; Sofronis, Petros Athanasios. / A microstructure-based mechanism of cracking in high temperature hydrogen attack. In: Acta Materialia. 2017 ; Vol. 140. pp. 300-304.
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