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Open AccessArticle

Hydrogen Uptake and Embrittlement of Carbon Steels in Various Environments

1
Department General, Analytical and Physical Chemistry, Montanuniversitaet Leoben, Franz-Josef-Strasse 18, 8700 Leoben, Austria
2
Green Gas Technology, RAG Austria AG, Schwarzenbergplatz 16, 1015 Vienna, Austria
3
Research & Development, voestalpine Tubulars GmbH & Co KG, Alpinestrasse 17, 8652 Kindberg, Austria
*
Author to whom correspondence should be addressed.
Materials 2020, 13(16), 3604; https://doi.org/10.3390/ma13163604
Received: 6 July 2020 / Revised: 4 August 2020 / Accepted: 12 August 2020 / Published: 14 August 2020
(This article belongs to the Section Corrosion and Materials Degradation)
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. View Full-Text
Keywords: hydrogen embrittlement; hydrogen absorption; hydrogen gas; sour gas; autoclave tests hydrogen embrittlement; hydrogen absorption; hydrogen gas; sour gas; autoclave tests
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MDPI and ACS Style

Trautmann, A.; Mori, G.; Oberndorfer, M.; Bauer, S.; Holzer, C.; Dittmann, C. Hydrogen Uptake and Embrittlement of Carbon Steels in Various Environments. Materials 2020, 13, 3604.

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