Probing elastically or plastically induced structural heterogeneities in bulk metallic glasses by nanoindentation pop-in tests
Shear banding dynamics in bulk metallic glasses (BMGs) is manifested by the spatiotemporal evolution of strain fields which in turn depend on structural heterogeneities. The spacing of these heterogeneities, as a characteristic length scale, was determined from the analysis of nanoindentation pop-in...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
AIP Publishing LLC
2017-08-01
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| Series: | AIP Advances |
| Online Access: | http://dx.doi.org/10.1063/1.4993719 |
| _version_ | 1819054150658293760 |
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| author | Tingkun Liu Yanfei Gao Hongbin Bei |
| author_facet | Tingkun Liu Yanfei Gao Hongbin Bei |
| author_sort | Tingkun Liu |
| collection | DOAJ |
| description | Shear banding dynamics in bulk metallic glasses (BMGs) is manifested by the spatiotemporal evolution of strain fields which in turn depend on structural heterogeneities. The spacing of these heterogeneities, as a characteristic length scale, was determined from the analysis of nanoindentation pop-in tests using a stochastic model. Furthermore, the pre-stress by elastic bending and residual stress by plastic bending of BMG plates were found to dramatically decrease such spacings, thus increasing heterogeneity density and mechanically rejuvenating the glass structure. |
| first_indexed | 2024-12-21T12:47:03Z |
| format | Article |
| id | doaj.art-75ff922c004c474992897fee981a466d |
| institution | Directory Open Access Journal |
| issn | 2158-3226 |
| language | English |
| last_indexed | 2024-12-21T12:47:03Z |
| publishDate | 2017-08-01 |
| publisher | AIP Publishing LLC |
| record_format | Article |
| series | AIP Advances |
| spelling | doaj.art-75ff922c004c474992897fee981a466d2022-12-21T19:03:37ZengAIP Publishing LLCAIP Advances2158-32262017-08-0178085216085216-810.1063/1.4993719041708ADVProbing elastically or plastically induced structural heterogeneities in bulk metallic glasses by nanoindentation pop-in testsTingkun Liu0Yanfei Gao1Hongbin Bei2Department of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USADepartment of Materials Science and Engineering, University of Tennessee, Knoxville, TN 37996, USAMaterials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USAShear banding dynamics in bulk metallic glasses (BMGs) is manifested by the spatiotemporal evolution of strain fields which in turn depend on structural heterogeneities. The spacing of these heterogeneities, as a characteristic length scale, was determined from the analysis of nanoindentation pop-in tests using a stochastic model. Furthermore, the pre-stress by elastic bending and residual stress by plastic bending of BMG plates were found to dramatically decrease such spacings, thus increasing heterogeneity density and mechanically rejuvenating the glass structure.http://dx.doi.org/10.1063/1.4993719 |
| spellingShingle | Tingkun Liu Yanfei Gao Hongbin Bei Probing elastically or plastically induced structural heterogeneities in bulk metallic glasses by nanoindentation pop-in tests AIP Advances |
| title | Probing elastically or plastically induced structural heterogeneities in bulk metallic glasses by nanoindentation pop-in tests |
| title_full | Probing elastically or plastically induced structural heterogeneities in bulk metallic glasses by nanoindentation pop-in tests |
| title_fullStr | Probing elastically or plastically induced structural heterogeneities in bulk metallic glasses by nanoindentation pop-in tests |
| title_full_unstemmed | Probing elastically or plastically induced structural heterogeneities in bulk metallic glasses by nanoindentation pop-in tests |
| title_short | Probing elastically or plastically induced structural heterogeneities in bulk metallic glasses by nanoindentation pop-in tests |
| title_sort | probing elastically or plastically induced structural heterogeneities in bulk metallic glasses by nanoindentation pop in tests |
| url | http://dx.doi.org/10.1063/1.4993719 |
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