Modeling the Hydrogen Effect on the Constitutive Response of a Low Carbon Steel in Cyclic Loading
Rattachement africain : jp, us. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Abstract Hydrogen-accelerated fatigue crack growth is a most severe manifestation of hydrogen embrittlement. A mechanistic and predictive model is still lacking partly due to the lack of a descriptive constitutive model of the hydrogen/material interaction at the macroscale under cyclic loading. Such a model could be used to assess the nature of the stress and strain fields in the neighborhood of a crack, a development that could potentially lead to the association of these fields with proper macroscopic parameters. Toward this goal, a constitutive model for cyclic response should be capable of capturing hardening or softening under cyclic straining or ratcheting under stress-controlled testing. In this work, we attempt a constitutive description by using data from uniaxial strain-controlled cyclic loading and stress-controlled ratcheting tests with a low carbon steel, Japanese Industrial Standard (JIS) SM490YB, conducted in air and 1 MPa H2 gas environment at room temperature. We explore the Chaboche constitutive model which is a nonlinear kinematic hardening model that was developed as an extension to the Frederick and Armstrong model, and propose an approach to calibrate the parameters involved. From the combined experimental data and the calibrated Chaboche model, we may conclude that hydrogen decreases the yield stress and the amount of cyclic hardening. On the other hand, hydrogen increases ratcheting, the rate of cyclic hardening, and promotes stronger recovery.
Ce résumé expose les affirmations des auteurs. BNTIC ne l’interprète pas comme une validation indépendante des résultats.
Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Modeling the Hydrogen Effect on the Constitutive Response of a Low Carbon Steel in Cyclic Loading
- Date Crossref
- 04/12/2020
- Éditeur
- ASME International
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Kyushu University International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) pays non établi dans la noticeUniversité ou école supérieure
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University of Illinois Urbana-Champaign pays non établi dans la noticeUniversité ou école supérieure
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Seattle University Department of Mechanical Engineering pays non établi dans la noticeUniversité ou école supérieure
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Lawrence Berkeley National Laboratory pays non établi dans la noticeStructure de recherche
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University of California Lawrence Berkeley National Laboratory pays non établi dans la noticeUniversité ou école supérieure
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University of Illinois at Urbana-Champaign Department of Mechanical Science and Engineering pays non établi dans la noticeUniversité ou école supérieure
International Institute for Carbon-Neutral Energy Research (WPI-I2CNER) — Kyushu University, University of Illinois Urbana-Champaign et Department of Mechanical Engineering — Seattle University, avec 3 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.