| DOI | Trouver le DOI : https://doi.org/10.1080/0950083031000064399 |
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| Auteur | Rechercher : Chen, Kuiying1; Rechercher : Zhao, L. R.1; Rechercher : Tse, John S.2 |
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| Affiliation | - Conseil national de recherches Canada. Institut de recherche aérospatiale du CNRC
- Conseil national de recherches Canada. Institut Steacie des sciences moléculaires du CNRC
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| Format | Texte, Article |
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| Résumé | Fully first-principles calculations have been performed to investigate the alloying effect on the sulphur embrittlement of the ?- ?' interface of nickel-based single-crystal superalloys. The shear and cohesive strengths of the inter-face are calculated in terms of Mayer bond orders (BOs), and the ratio R BO of shear strength over cohesive strength is analysed as a function of alloying element substitution. The interface characteristics are also studied using the electron charge-density distribution. It is found that the interplay between shear and cohesive strengths has a significant influence on the interfacial embrittlement. Using the phenomenological theory of fracture as well as the calculated ratio R BO , we propose a new mechanism responsible for relieving sulphur embrittlement of the ?- ?' interface through alloying substitution. |
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| Date de publication | 2003 |
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| Dans | |
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| Langue | anglais |
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| Numéro NPARC | 12327572 |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | 73361dc3-37cb-48a2-a6ab-7cdd7e6dd462 |
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| Enregistrement créé | 2009-09-10 |
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| Enregistrement modifié | 2020-04-02 |
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