Journal
CORROSION SCIENCE
Volume 52, Issue 10, Pages 3198-3204Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2010.05.038
Keywords
Steel; Hydrogen permeation; SEM; Hydrogen embrittlement; Hydrogen absorption; Atmospheric corrosion
Funding
- Japanese Society of Steel Construction
- Ministry of Education, Culture, Sports, Science and Technology [20560686]
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Delayed fracture properties of AISI 4135 high strength steels with 1490 and 1310 MPa of tensile strength, represented as B15 and B13, respectively, have been studied by means of slow strain rate test (SSRT) of notched bar specimens after outdoor exposure at rural and coastal areas. The exposed specimens were kept at humid medium before SSRT to reproduce active hydrogen entry influenced by the rust layer and to homogenize hydrogen distribution. The influences of exposure site and exposure time on fracture stress have been investigated. The susceptibility of B15 to delayed fracture was obviously higher than that of B13. (C) 2010 Elsevier Ltd. All rights reserved.
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