Degradation models for hydrogen embrittlement

M. Dadfarnia, Petros Athanasios Sofronis, B. P. Somerday, D. K. Balch, P. Schembri

Research output: Chapter in Book/Report/Conference proceedingChapter

3 Citations (Scopus)

Abstract

In this chapter, we present a solid mechanics modeling and simulation effort to elucidate the linking of the macroscopic embrittlement phenomenology to the features of the microstructural degradation mechanisms ahead of a crack tip in the austenitic Fe-Ni-Co alloy IN903. In general, we find that the deformation and hydrogen fields in the fracture process depend strongly on the initial and boundary conditions, thus reflecting the variety of fracture modes. In particular, for intergranular crack growth in wedge opening load specimens in hydrogen gas we predict fracture process zones that are large in comparison to the typical characteristic diffusion distances. For ductile cracking in gaseous environments, we find that the process is controlled by the average spacing of the carbides.

Original languageEnglish
Title of host publicationGaseous Hydrogen Embrittlement of Materials in Energy Technologies
Subtitle of host publicationMechanisms, Modelling and Future Developments
PublisherElsevier Inc.
Pages326-377
Number of pages52
ISBN (Print)9780857095367
DOIs
Publication statusPublished - Jan 1 2012

Fingerprint

Hydrogen embrittlement
Degradation
Hydrogen
Embrittlement
Crack tips
Carbides
Crack propagation
Mechanics
Boundary conditions
Gases

All Science Journal Classification (ASJC) codes

  • Engineering(all)

Cite this

Dadfarnia, M., Sofronis, P. A., Somerday, B. P., Balch, D. K., & Schembri, P. (2012). Degradation models for hydrogen embrittlement. In Gaseous Hydrogen Embrittlement of Materials in Energy Technologies: Mechanisms, Modelling and Future Developments (pp. 326-377). Elsevier Inc.. https://doi.org/10.1016/B978-0-85709-536-7.50011-8

Degradation models for hydrogen embrittlement. / Dadfarnia, M.; Sofronis, Petros Athanasios; Somerday, B. P.; Balch, D. K.; Schembri, P.

Gaseous Hydrogen Embrittlement of Materials in Energy Technologies: Mechanisms, Modelling and Future Developments. Elsevier Inc., 2012. p. 326-377.

Research output: Chapter in Book/Report/Conference proceedingChapter

Dadfarnia, M, Sofronis, PA, Somerday, BP, Balch, DK & Schembri, P 2012, Degradation models for hydrogen embrittlement. in Gaseous Hydrogen Embrittlement of Materials in Energy Technologies: Mechanisms, Modelling and Future Developments. Elsevier Inc., pp. 326-377. https://doi.org/10.1016/B978-0-85709-536-7.50011-8
Dadfarnia M, Sofronis PA, Somerday BP, Balch DK, Schembri P. Degradation models for hydrogen embrittlement. In Gaseous Hydrogen Embrittlement of Materials in Energy Technologies: Mechanisms, Modelling and Future Developments. Elsevier Inc. 2012. p. 326-377 https://doi.org/10.1016/B978-0-85709-536-7.50011-8
Dadfarnia, M. ; Sofronis, Petros Athanasios ; Somerday, B. P. ; Balch, D. K. ; Schembri, P. / Degradation models for hydrogen embrittlement. Gaseous Hydrogen Embrittlement of Materials in Energy Technologies: Mechanisms, Modelling and Future Developments. Elsevier Inc., 2012. pp. 326-377
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