Deformation mechanisms of MMCs under indentation
This paper investigates the deformation mechanisms of MMCs subjected to micro-indentation by a spherical indenter using a three-dimensional finite element modeling. It was found that deformation behavior, hardness and work hardening of MMCs were highly dependant on the location of indentation relati...
| Main Authors: | , , |
|---|---|
| Format: | Journal Article |
| Published: |
Elsevier Ltd
2008
|
| Subjects: | |
| Online Access: | http://hdl.handle.net/20.500.11937/20984 |
| _version_ | 1848750462525767680 |
|---|---|
| author | Pramanik, Alokesh Zhang, Liangchi Arsecularatne, Joseph |
| author_facet | Pramanik, Alokesh Zhang, Liangchi Arsecularatne, Joseph |
| author_sort | Pramanik, Alokesh |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | This paper investigates the deformation mechanisms of MMCs subjected to micro-indentation by a spherical indenter using a three-dimensional finite element modeling. It was found that deformation behavior, hardness and work hardening of MMCs were highly dependant on the location of indentation relative to particles, volume percentage of the particle, and the size ratio of indenter to particle. The hardness of an MMC varied in a complex manner depending on the restriction on the matrix flow by reinforced particles and work hardening of the matrix material. Hardness increased with the increase of volume percentage of reinforced particles and decrease of the size ratio of indenter to particle. Matrix flow due to indentation was highly non-uniform which generated an inhomogeneous strain filed in an MMC. These pose a question that the conventional definition of micro-hardness is not very appropriate for characterizing MMCs. |
| first_indexed | 2025-11-14T07:37:13Z |
| format | Journal Article |
| id | curtin-20.500.11937-20984 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T07:37:13Z |
| publishDate | 2008 |
| publisher | Elsevier Ltd |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-209842019-02-19T04:26:14Z Deformation mechanisms of MMCs under indentation Pramanik, Alokesh Zhang, Liangchi Arsecularatne, Joseph Finite element analysis Residual stress Hardness testing Metal–matrix composites Deformation Plastic deformation This paper investigates the deformation mechanisms of MMCs subjected to micro-indentation by a spherical indenter using a three-dimensional finite element modeling. It was found that deformation behavior, hardness and work hardening of MMCs were highly dependant on the location of indentation relative to particles, volume percentage of the particle, and the size ratio of indenter to particle. The hardness of an MMC varied in a complex manner depending on the restriction on the matrix flow by reinforced particles and work hardening of the matrix material. Hardness increased with the increase of volume percentage of reinforced particles and decrease of the size ratio of indenter to particle. Matrix flow due to indentation was highly non-uniform which generated an inhomogeneous strain filed in an MMC. These pose a question that the conventional definition of micro-hardness is not very appropriate for characterizing MMCs. 2008 Journal Article http://hdl.handle.net/20.500.11937/20984 10.1016/j.compscitech.2007.12.008 Elsevier Ltd fulltext |
| spellingShingle | Finite element analysis Residual stress Hardness testing Metal–matrix composites Deformation Plastic deformation Pramanik, Alokesh Zhang, Liangchi Arsecularatne, Joseph Deformation mechanisms of MMCs under indentation |
| title | Deformation mechanisms of MMCs under indentation |
| title_full | Deformation mechanisms of MMCs under indentation |
| title_fullStr | Deformation mechanisms of MMCs under indentation |
| title_full_unstemmed | Deformation mechanisms of MMCs under indentation |
| title_short | Deformation mechanisms of MMCs under indentation |
| title_sort | deformation mechanisms of mmcs under indentation |
| topic | Finite element analysis Residual stress Hardness testing Metal–matrix composites Deformation Plastic deformation |
| url | http://hdl.handle.net/20.500.11937/20984 |