Evaluation of delayed fracture property of outdoor-exposed high strength AISI 4135 steels

Evaluation of delayed fracture property of outdoor-exposed high strength AISI 4135 steels

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 speci...

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Veröffentlicht in:Corrosion science 2010-10, Vol.52 (10), p.3198-3204
Hauptverfasser: Li, Songjie, Akiyama, Eiji, Uno, Nobuyoshi, Hirai, Keiji, Tsuzaki, Kaneaki, Zhang, Boping
Format: Artikel
Sprache:eng
Schlagworte:
A. Steel
Applied sciences
B. Hydrogen permeation
B. SEM
C. Atmospheric corrosion
C. Hydrogen absorption
C. Hydrogen embrittlement
Coastal areas
Corrosion
Corrosion environments
Exact sciences and technology
Fracture mechanics
High strength steels
Metals. Metallurgy
Outdoor
Rural
Rusting
Slow strain rate
Steels
Tensile strength
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Zusammenfassung: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.
ISSN:0010-938X
1879-0496
DOI:10.1016/j.corsci.2010.05.038