Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/106372
DC Field | Value | Language |
---|---|---|
dc.contributor | Department of Mechanical Engineering | - |
dc.creator | Sun, L | - |
dc.creator | Li, D | - |
dc.creator | Zhu, L | - |
dc.creator | Ruan, H | - |
dc.creator | Lu, J | - |
dc.date.accessioned | 2024-05-09T00:53:04Z | - |
dc.date.available | 2024-05-09T00:53:04Z | - |
dc.identifier.issn | 0749-6419 | - |
dc.identifier.uri | http://hdl.handle.net/10397/106372 | - |
dc.language.iso | en | en_US |
dc.publisher | Elsevier Ltd | en_US |
dc.rights | © 2020 Elsevier Ltd. All rights reserved. | en_US |
dc.rights | © 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/. | en_US |
dc.rights | The following publication Sun, L., Li, D., Zhu, L., Ruan, H., & Lu, J. (2020). Size-dependent formation and thermal stability of high-order twins in hierarchical nanotwinned metals. International Journal of Plasticity, 128, 102685 is available at https://doi.org/10.1016/j.ijplas.2020.102685. | en_US |
dc.subject | A.Dislocations | en_US |
dc.subject | A.Twinning | en_US |
dc.subject | B.Metallic material | en_US |
dc.subject | Molecular dynamics | en_US |
dc.title | Size-dependent formation and thermal stability of high-order twins in hierarchical nanotwinned metals | en_US |
dc.type | Journal/Magazine Article | en_US |
dc.identifier.volume | 128 | - |
dc.identifier.doi | 10.1016/j.ijplas.2020.102685 | - |
dcterms.abstract | Introducing hierarchical twins into nanotwinned (NT) materials is regarded as an effective way to further improve their mechanical properties. It can be imagined that, with the increase of the order of hierarchical twins, it is insufficient to solely take single twin spacing into consideration. For example, the effect of the spacings of primary and secondary twins should be considered together for tertiary twinning. By virtue of theoretical modelling and atomistic simulations, we investigate the influence of low-order twin spacings on high-order twinning. The optimization strategy of high-order twin density and spacings with respect to low-order twin spacings are proposed. It is demonstrated that there exists a trade-off between high-order twin density and twin spacing which can be tuned by the low-order twin spacings. In addition, the atomistic deformation mechanisms related to low-order twin spacings are discussed. Different size-dependent propagation behaviors of partial dislocations are unveiled, relying on the combination of low-order twin spacings. At last, the great thermal stability of high-order twins is also verified, which is attributed to a strong pinning effect of partial dislocations onto low-order twins, leading to a special stress partitioning phenomenon. Our findings may provide a theoretical benchmark for the fabrication of high-order hierarchical nanotwinned (HNT) structures and thus, assisting the design of high-performance mechanical materials. | - |
dcterms.accessRights | open access | en_US |
dcterms.bibliographicCitation | International journal of plasticity, May 2020, v. 128, 102685 | - |
dcterms.isPartOf | International journal of plasticity | - |
dcterms.issued | 2020-05 | - |
dc.identifier.scopus | 2-s2.0-85081572953 | - |
dc.identifier.eissn | 1879-2154 | - |
dc.identifier.artn | 102685 | - |
dc.description.validate | 202405 bcch | - |
dc.description.oa | Accepted Manuscript | en_US |
dc.identifier.FolderNumber | ME-0269 | en_US |
dc.description.fundingSource | RGC | en_US |
dc.description.fundingSource | Others | en_US |
dc.description.fundingText | National Key R&D Program of China; Major Program of the National Natural Science Foundation of China; Fundamental Research Funds for the Central Universities | en_US |
dc.description.pubStatus | Published | en_US |
dc.identifier.OPUS | 20349091 | en_US |
dc.description.oaCategory | Green (AAM) | en_US |
Appears in Collections: | Journal/Magazine Article |
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File | Description | Size | Format | |
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Ruan_Size-Dependent_Formation_Thermal.pdf | Pre-Published version | 100.69 MB | Adobe PDF | View/Open |
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