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Conference Papers Year : 2012

Experimental and numerical analysis of hydrogen interaction with plastic strain in a high strength steel

Abstract

Cyclic loading tests were performed on micro-notched samples of high-strength steel S690QT in air and under cathodic polarisation in a saline solution. These specimens were modelled and their behaviour simulated by finite elements calculations with a combined nonlinear isotropic-kinematic hardening constitutive law. This model can simulate cyclic softening and ratcheting effect of the high-strength steel. Stress and strain fields in the vicinity of the notch-tip were calculated. Results show that a strong dependence of the crack initiation with plastic strain accumulation. Hydrogen assisted cracking mechanism is discussed based on arrangements of dislocations structures.

Domains

Materials
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Dates and versions

emse-01063843 , version 1 (14-09-2014)

Identifiers

  • HAL Id : emse-01063843 , version 1

Cite

Flavien Vucko, Cédric Bosch, David Delafosse. Experimental and numerical analysis of hydrogen interaction with plastic strain in a high strength steel. European Corrosion Congress - Eurocorr 2012, Sep 2012, Istanbul, Turkey. Paper 1223. ⟨emse-01063843⟩
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