Atomistic mechanisms of cyclic hardening in metallic glass
Molecular dynamics with an embedded-atom method potential is used to simulate the nanoindentation of Cu[subscript 63.5]Zr[subscript 36.5] metallic glasses. In particular, the effects of cyclic loading within the nominal elastic range on the overall strength and plasticity of metallic glass are studi...
| Main Authors: | , |
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| Other Authors: | |
| Format: | Article |
| Language: | en_US |
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American Institute of Physics (AIP)
2013
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| Online Access: | http://hdl.handle.net/1721.1/79774 https://orcid.org/0000-0001-9856-2682 |
| _version_ | 1811068546386493440 |
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| author | Deng, Chuang Schuh, Christopher A. |
| author2 | Massachusetts Institute of Technology. Department of Materials Science and Engineering |
| author_facet | Massachusetts Institute of Technology. Department of Materials Science and Engineering Deng, Chuang Schuh, Christopher A. |
| author_sort | Deng, Chuang |
| collection | MIT |
| description | Molecular dynamics with an embedded-atom method potential is used to simulate the nanoindentation of Cu[subscript 63.5]Zr[subscript 36.5] metallic glasses. In particular, the effects of cyclic loading within the nominal elastic range on the overall strength and plasticity of metallic glass are studied. The simulated results are in line with the characteristics of experimentally observed hardening effects. In addition, analysis based on local von Mises strain suggests that the hardening is induced by confined microplasticity and stiffening in regions of the originally preferred yielding path, requiring a higher applied load to trigger a secondary one. |
| first_indexed | 2024-09-23T07:57:36Z |
| format | Article |
| id | mit-1721.1/79774 |
| institution | Massachusetts Institute of Technology |
| language | en_US |
| last_indexed | 2024-09-23T07:57:36Z |
| publishDate | 2013 |
| publisher | American Institute of Physics (AIP) |
| record_format | dspace |
| spelling | mit-1721.1/797742022-09-30T01:16:57Z Atomistic mechanisms of cyclic hardening in metallic glass Deng, Chuang Schuh, Christopher A. Massachusetts Institute of Technology. Department of Materials Science and Engineering Deng, Chuang Schuh, Christopher A. Molecular dynamics with an embedded-atom method potential is used to simulate the nanoindentation of Cu[subscript 63.5]Zr[subscript 36.5] metallic glasses. In particular, the effects of cyclic loading within the nominal elastic range on the overall strength and plasticity of metallic glass are studied. The simulated results are in line with the characteristics of experimentally observed hardening effects. In addition, analysis based on local von Mises strain suggests that the hardening is induced by confined microplasticity and stiffening in regions of the originally preferred yielding path, requiring a higher applied load to trigger a secondary one. United States. Office of Naval Research (Grant N00014-08-10312) 2013-08-05T15:28:56Z 2013-08-05T15:28:56Z 2012-06 2012-04 Article http://purl.org/eprint/type/JournalArticle 00036951 1077-3118 http://hdl.handle.net/1721.1/79774 Deng, Chuang, and Christopher A. Schuh. “Atomistic mechanisms of cyclic hardening in metallic glass.” Applied Physics Letters 100, no. 25 (2012): 251909. © 2012 American Institute of Physics https://orcid.org/0000-0001-9856-2682 en_US http://dx.doi.org/10.1063/1.4729941 Applied Physics Letters Article is made available in accordance with the publisher's policy and may be subject to US copyright law. Please refer to the publisher's site for terms of use. application/pdf American Institute of Physics (AIP) MIT web domain |
| spellingShingle | Deng, Chuang Schuh, Christopher A. Atomistic mechanisms of cyclic hardening in metallic glass |
| title | Atomistic mechanisms of cyclic hardening in metallic glass |
| title_full | Atomistic mechanisms of cyclic hardening in metallic glass |
| title_fullStr | Atomistic mechanisms of cyclic hardening in metallic glass |
| title_full_unstemmed | Atomistic mechanisms of cyclic hardening in metallic glass |
| title_short | Atomistic mechanisms of cyclic hardening in metallic glass |
| title_sort | atomistic mechanisms of cyclic hardening in metallic glass |
| url | http://hdl.handle.net/1721.1/79774 https://orcid.org/0000-0001-9856-2682 |
| work_keys_str_mv | AT dengchuang atomisticmechanismsofcyclichardeninginmetallicglass AT schuhchristophera atomisticmechanismsofcyclichardeninginmetallicglass |