Atomic mixed-mode cohesive-zone dual constitutive laws of impurity-embrittled grain boundaries in polycrystalline solids via nanoscale field projection method
DC Field | Value | Language |
---|---|---|
dc.contributor.author | Vinh Phu Nguyen | - |
dc.contributor.author | Nghia Trong Mai | - |
dc.contributor.author | Seung Tae Choi | - |
dc.date.accessioned | 2021-11-22T07:40:16Z | - |
dc.date.available | 2021-11-22T07:40:16Z | - |
dc.date.issued | 2021-07 | - |
dc.identifier.issn | 0022-5096 | - |
dc.identifier.issn | 1873-4782 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/51726 | - |
dc.description.abstract | Atomic-scale mixed-mode intergranular fracture, featured by non-local non-linear discrete atomic debonding processes near a crack tip along a grain boundary (GB), is modeled with a cohesive zone in a continuum scale controlled by cohesive-zone dual constitutive relations, a balanced traction-separation relationship, i.e., a conventional cohesive-zone law (CZL), and an unbalanced traction (UT)-centerline displacement (CD) relationship. In order to bridge two different scales, we developed a nanoscale field projection method (nano-FPM) based on atomic-scale interaction J and M integrals, for which asymptotic anisotropic elastic fields near an interfacial crack with balanced and unbalanced crack-face tractions are used as probing fields of the CZL and UT-CD relationship, respectively. Cracking phenomena along a GB in nickel with segregated sulfur impurity atoms under mixed-mode loadings are simulated with molecular dynamics. Embrittlement by sulfur impurity atoms is quantitatively estimated with the mixed-mode CZL of the GBs in nickel via the nano-FPM developed in this study. UT-CD relationship, a special feature of atomic fracture, representing the micromechanical change of surface stress between GB and cracked surfaces, is also obtained by the nano-FPM. New functional relationships for CZL, UT-CD relationship, and decohesion potential obtained by the nano-FPM are proposed to facilitate the implementation of them into mesoscale or continuum-scale analysis on mixed-mode intergranular fracture. | - |
dc.language | 영어 | - |
dc.language.iso | ENG | - |
dc.publisher | PERGAMON-ELSEVIER SCIENCE LTD | - |
dc.title | Atomic mixed-mode cohesive-zone dual constitutive laws of impurity-embrittled grain boundaries in polycrystalline solids via nanoscale field projection method | - |
dc.type | Article | - |
dc.identifier.doi | 10.1016/j.jmps.2021.104453 | - |
dc.identifier.bibliographicCitation | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, v.152 | - |
dc.description.isOpenAccess | N | - |
dc.identifier.wosid | 000651264600002 | - |
dc.identifier.scopusid | 2-s2.0-85105697074 | - |
dc.citation.title | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS | - |
dc.citation.volume | 152 | - |
dc.type.docType | Article | - |
dc.publisher.location | 영국 | - |
dc.subject.keywordAuthor | Impurity segregation | - |
dc.subject.keywordAuthor | Cohesive-zone law | - |
dc.subject.keywordAuthor | Field projection method | - |
dc.subject.keywordAuthor | Molecular dynamics | - |
dc.subject.keywordAuthor | Intergranular fracture | - |
dc.subject.keywordPlus | SURFACE STRESS | - |
dc.subject.keywordPlus | CRACK-TIP | - |
dc.subject.keywordPlus | INTERGRANULAR FRACTURE | - |
dc.subject.keywordPlus | CONSERVATION-LAWS | - |
dc.subject.keywordPlus | NUMERICAL SIMULATIONS | - |
dc.subject.keywordPlus | INVERSE EXTRACTION | - |
dc.subject.keywordPlus | VOID GROWTH | - |
dc.subject.keywordPlus | FAR-FIELDS | - |
dc.subject.keywordPlus | NICKEL | - |
dc.subject.keywordPlus | SEGREGATION | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Mechanics | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.relation.journalWebOfScienceCategory | Mechanics | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.
84, Heukseok-ro, Dongjak-gu, Seoul, Republic of Korea (06974)02-820-6194
COPYRIGHT 2019 Chung-Ang University All Rights Reserved.
Certain data included herein are derived from the © Web of Science of Clarivate Analytics. All rights reserved.
You may not copy or re-distribute this material in whole or in part without the prior written consent of Clarivate Analytics.