Modeling of Hydrogen Diffusion in Slow Strain Rate (SSR) Testing of Notched Samples

Andreas Drexler*, Josef Domitner, Christof Sommitsch

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingChapter

Abstract

Macroscopic testing of the hydrogen embrittlement (HE) resistivity of ultra and advanced high-strength steels is still a difficult task. Different testing procedures are recommended in literature, such as the slow strain rate (SSR) test, the constant load (CL) test, or the incremental step load (ISL) test. Nevertheless, a direct comparison of the results of the different testing procedures is challenging and the influence of the microstructure is not well understood. Therefore, the present work contributes to a deeper understanding of the role of internal hydrogen diffusion and trapping at microstructural defects during SSR testing of notched samples using physical reasonable diffusion-mechanical finite element (FE) simulations. The modeling approach allows a detailed study of the role of macroscopic strength and multiple trapping sites on the local hydrogen accumulation at the notch.

Original languageEnglish
Title of host publicationAdvances in Hydrogen Embrittlement Study
EditorsVladimir A. Polyanskiy, Alexander K. Belyaev
Place of PublicationCham
PublisherSpringer
Chapter8
Pages87-111
Number of pages25
ISBN (Electronic)978-3-030-66948-5
ISBN (Print)978-3-030-66947-8
DOIs
Publication statusPublished - 2021

Publication series

NameAdvanced Structured Materials
Volume143

Keywords

  • Beneficial trapping
  • Hydrogen diffusion
  • Hydrogen embrittlement
  • Notch effect
  • Slow strain rate testing

ASJC Scopus subject areas

  • Materials Science(all)

Fields of Expertise

  • Advanced Materials Science
  • Mobility & Production

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