Hydrogen Uptake and Embrittlement of Carbon Steels in Various Environments

Anton Trautmann, Gregor Mori, Markus Oberndorfer, Stephan Bauer, Christoph Holzer, Christoph Dittmann

Research output: Contribution to journalArticleResearchpeer-review

4 Citations (Scopus)

Abstract

To avoid failures due to hydrogen embrittlement, it is important to know the amount of hydrogen absorbed by certain steel grades under service conditions. When a critical hydrogen content is reached, the material properties begin to deteriorate. The hydrogen uptake and embrittlement of three different carbon steels (API 5CT L80 Type 1, P110 and 42CrMo4) was investigated in autoclave tests with hydrogen gas (H2) at elevated pressure and in ambient pressure tests with hydrogen sulfide (H2S). H2 gas with a pressure of up to 100 bar resulted in an overall low but still detectable hydrogen absorption, which did not cause any substantial hydrogen embrittlement in specimens under a constant load of 90% of the specified minimum yield strength (SMYS). The amount of hydrogen absorbed under conditions with H2S was approximately one order of magnitude larger than under conditions with H2 gas. The high hydrogen content led to failures of the 42CrMo4 and P110 specimens.
Original languageEnglish
Article number3604
Number of pages16
Journal Materials
Volume13.2020
Issue number16
DOIs
Publication statusPublished - 14 Aug 2020

Keywords

  • Autoclave tests
  • Hydrogen absorption
  • Hydrogen embrittlement
  • Hydrogen gas
  • Sour gas

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