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Hydrogen embrittlement of high strength pipeline steels

Lookup NU author(s): Dr Alasdair Charles

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Abstract

A comparison was made between three API grade pipeline steels (X60, X80 and the X100 grade) from the point of view of their susceptibility to hydrogen embrittlement. The main aim was to determine whether the development of higher strength materials led to greater susceptibility to hydrogen embrittlement. This was achieved by straining at 2.8 × 10-5 s-1 after cathodic charging. The results showed that there is a distinct susceptibility to loss of ductility after charging and this tends to increase with the strength level of the steel at a charging current density above 0.44 mA mm-2. All three steels exhibited fine cracks parallel to the major rolling direction after charging and an increasing amount of brittleness on the fracture surface. © 2006 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Hardie D, Charles EA, Lopez AH

Publication type: Article

Publication status: Published

Journal: Corrosion Science

Year: 2006

Volume: 48

Issue: 12

Pages: 4378-4385

ISSN (print): 0010-938X

ISSN (electronic):

Publisher: Pergamon

URL: http://dx.doi.org/10.1016/j.corsci.2006.02.011

DOI: 10.1016/j.corsci.2006.02.011

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