Investigation into the micro deep drawing capabilities of a specially engineered refined aluminium alloy
During miniaturisation, size of the part comes close to grain size of the material. There is an overall decrease in the total number grains undergoing deformation and most of these are surface grains. Therefore, microscale deformation is marked by abnormal stress-strain response which limits the man...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2018-01-01
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| Series: | MATEC Web of Conferences |
| Subjects: | |
| Online Access: | https://doi.org/10.1051/matecconf/201819010001 |
| _version_ | 1818451109347328000 |
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| author | Dhal A. Panigrahi S.K. Shunmugam M.S. |
| author_facet | Dhal A. Panigrahi S.K. Shunmugam M.S. |
| author_sort | Dhal A. |
| collection | DOAJ |
| description | During miniaturisation, size of the part comes close to grain size of the material. There is an overall decrease in the total number grains undergoing deformation and most of these are surface grains. Therefore, microscale deformation is marked by abnormal stress-strain response which limits the manufacturing capabilities of microforming. Two distinct phenomena responsible for this are: (i) dominance of single crystal deformation behaviour, and (ii) increased strain localisation due to incompatibly between surface and core grains during deformation. The present work attempts to neutralise these effects by increasing the number of grains in the deformation zone. This has been achieved by engineering refined microstructure in the materials. To develop the refined microstructure, cryorolling followed by controlled annealing treatment has been employed. Microscale deformation behaviour and microforming capabilities of the refined material have been compared with its coarse-grained counterpart by analysing their tensile curves and by post-mortem study of micro deep drawn components over a wide range of sample thicknesses. Material with fully recrystallised, equiaxed, strain-free refined microstructure is found to have the best strain hardening response both in micro and macro deformation domains. This property is also reflected in the micro deep drawing capabilities of the same material. |
| first_indexed | 2024-12-14T21:01:58Z |
| format | Article |
| id | doaj.art-4e13e1ee4d0343aca2691402d6cd1202 |
| institution | Directory Open Access Journal |
| issn | 2261-236X |
| language | English |
| last_indexed | 2024-12-14T21:01:58Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | MATEC Web of Conferences |
| spelling | doaj.art-4e13e1ee4d0343aca2691402d6cd12022022-12-21T22:47:34ZengEDP SciencesMATEC Web of Conferences2261-236X2018-01-011901000110.1051/matecconf/201819010001matecconf_icnft2018_10001Investigation into the micro deep drawing capabilities of a specially engineered refined aluminium alloyDhal A.Panigrahi S.K.Shunmugam M.S.During miniaturisation, size of the part comes close to grain size of the material. There is an overall decrease in the total number grains undergoing deformation and most of these are surface grains. Therefore, microscale deformation is marked by abnormal stress-strain response which limits the manufacturing capabilities of microforming. Two distinct phenomena responsible for this are: (i) dominance of single crystal deformation behaviour, and (ii) increased strain localisation due to incompatibly between surface and core grains during deformation. The present work attempts to neutralise these effects by increasing the number of grains in the deformation zone. This has been achieved by engineering refined microstructure in the materials. To develop the refined microstructure, cryorolling followed by controlled annealing treatment has been employed. Microscale deformation behaviour and microforming capabilities of the refined material have been compared with its coarse-grained counterpart by analysing their tensile curves and by post-mortem study of micro deep drawn components over a wide range of sample thicknesses. Material with fully recrystallised, equiaxed, strain-free refined microstructure is found to have the best strain hardening response both in micro and macro deformation domains. This property is also reflected in the micro deep drawing capabilities of the same material.https://doi.org/10.1051/matecconf/201819010001Micro formingNano structureDeep drawing |
| spellingShingle | Dhal A. Panigrahi S.K. Shunmugam M.S. Investigation into the micro deep drawing capabilities of a specially engineered refined aluminium alloy MATEC Web of Conferences Micro forming Nano structure Deep drawing |
| title | Investigation into the micro deep drawing capabilities of a specially engineered refined aluminium alloy |
| title_full | Investigation into the micro deep drawing capabilities of a specially engineered refined aluminium alloy |
| title_fullStr | Investigation into the micro deep drawing capabilities of a specially engineered refined aluminium alloy |
| title_full_unstemmed | Investigation into the micro deep drawing capabilities of a specially engineered refined aluminium alloy |
| title_short | Investigation into the micro deep drawing capabilities of a specially engineered refined aluminium alloy |
| title_sort | investigation into the micro deep drawing capabilities of a specially engineered refined aluminium alloy |
| topic | Micro forming Nano structure Deep drawing |
| url | https://doi.org/10.1051/matecconf/201819010001 |
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