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EFFECT OF HIGH PRESSURE HYDROGEN ENVIRONMENT ON FATIGUE CRACK GROWTH RATE PROPERTIES OF STRUCTURAL STEEL USED FOR CYLINDERS

1 KANDER Ladislav
Co-authors:
1 STEJSKALOVÁ Šárka 1 ČÍŽEK Petr
Institution:
1 MATERIAL & METALURGICAL RESEARCH, Ltd., Pohraniční 31,Ostrava, 703 00, Czech Republic, EU
Conference:
26th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 24th - 26th 2017
Proceedings:
Proceedings 26th International Conference on Metallurgy and Materials
Pages:
826-831
ISBN:
978-80-87294-79-6
ISSN:
2694-9296
Published:
9th January 2018
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
515 views / 213 downloads
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Abstract

Paper deals with evaluation of effect of high pressure hydrogen environment with actual pressure of hydrogen up to 30 MPa on fatigue crack growth rate properties of structural steel used for cylinders production. 34CrNiMo6 grade steel was used for experimental programme. A unique new testing equipment (hydrogen autoclave) was built in MATERIAL & METALLURGICAL RESEARCH, Ltd. to study degradation mechanism of high pressure hydrogen environment on mechanical properties including fracture mechanics properties of structural materials. There is comparison of results of crack growth rate in the air and high pressure hydrogen presented in the paper. Potential method was used for crack growth monitoring in the hydrogen autoclave due to cycling. Effect of hydrogen is presented on fractography examination, change in fracture morphology was found on fracture surfaces of tested specimens due to presence of high pressure hydrogen.

Keywords: High pressure hydrogen environment, fracture mechanics, cylinders, 34CrNiMo6 steel

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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