Monitoring of corrosion‐fatigue degradation of grade R4 steel using an electrochemical‐mechanical combined approach
Source abstract
Abstract
Abstract The study deals with degradation and failure of mooring chains by the combined effect of corrosion and mechanical cyclic stresses on steel. Monitoring of the corrosion‐fatigue damage was carried out using electrochemical assessment during the application of the cyclic mechanical loading on grade R4 martensitic steel specimens, immersed in artificial seawater. The spontaneous potential of the steel specimens and Electrochemical Impedance Spectroscopy measurements were performed to assess the corrosion degradation. Tests conducted under fully reversed stress‐controlled loading have shown earlier failure caused by the corrosive environment when compared with the tests performed in ambient air. The corrosion potential response was used to identify the crack initiation and propagation stages.
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Research context
OpenAlex topics: Corrosion Behavior and Inhibition · Hydrogen embrittlement and corrosion behaviors in metals · Concrete Corrosion and Durability
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Mechanical Engineering University of Brasília Brasília Brazil
CQE—Centro de Química Estrutural, Instituto Superior Técnico Universidade de Lisboa Lisbon Portugal
IDMEC—Instituto de Engenharia Mecânica, Instituto Superior Técnico Universidade de Lisboa Lisbon Portugal
Instituto Politécnico Universidade do Estado do Rio de Janeiro Nova Friburgo Brazil
Funding
Conselho Nacional de Desenvolvimento Científico e Tecnológico · Coordenação de Aperfeiçoamento de Pessoal de Nível Superior · Faculdade de Ciências e Tecnologia, Universidade Nova de Lisboa · Fundação para a Ciência e a Tecnologia
References (35)
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