Effect of hydrogen on fatigue-crack growth of a ferritic-pearlitic low carbon steel

Akihide Nagao, Mohsen Dadfarnia, Shuai Wang, Petros Sofronis, Kelly E. Nygren, Ian M. Robertson

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The effect of external high-pressure H2 gas on fatigue-crack growth behavior has been examined using a ferritic-pearlitic low carbon steel. The presence of hydrogen accelerates the crack growth rate by ∼13 times compared to the uncharged state and shifts the fracture surface morphology from ductile striations to a mixture of "flat" and "quasi-cleavage" features. The common feature found in the microstructure immediately beneath the hydrogen-induced fracture surface is enhanced plasticity in terms of refined dislocation cell structures and dense dislocation bands.

Original languageEnglish (US)
Title of host publicationMaterials and Fabrication
PublisherAmerican Society of Mechanical Engineers (ASME)
ISBN (Electronic)9780791858004
DOIs
StatePublished - Jan 1 2017
EventASME 2017 Pressure Vessels and Piping Conference, PVP 2017 - Waikoloa, United States
Duration: Jul 16 2017Jul 20 2017

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
Volume6B-2017
ISSN (Print)0277-027X

Other

OtherASME 2017 Pressure Vessels and Piping Conference, PVP 2017
CountryUnited States
CityWaikoloa
Period7/16/177/20/17

ASJC Scopus subject areas

  • Mechanical Engineering

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    Nagao, A., Dadfarnia, M., Wang, S., Sofronis, P., Nygren, K. E., & Robertson, I. M. (2017). Effect of hydrogen on fatigue-crack growth of a ferritic-pearlitic low carbon steel. In Materials and Fabrication (American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP; Vol. 6B-2017). American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/PVP2017-66273