On the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals : a three-dimensional crystal plasticity finite element method study
A three-dimensional crystal plasticity finite element method model is developed to investigate the influence of the grain boundary (GB) misorientation on the equal-channel angular pressing deformation of aluminum bicrystals. Aluminum bicrystals with symmetric 〈112〉 tilt boundaries and misorientation...
| Main Authors: | , , , , , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2021
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| Online Access: | https://hdl.handle.net/10356/150177 |
| _version_ | 1826124076804997120 |
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| author | Liu, Mao Nambu, Shoichi Zhou, Kun Wang, Pengfei Lu, Guoxing Lu, Cheng Tieu, Kiet A. Koseki, Toshihiko |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Liu, Mao Nambu, Shoichi Zhou, Kun Wang, Pengfei Lu, Guoxing Lu, Cheng Tieu, Kiet A. Koseki, Toshihiko |
| author_sort | Liu, Mao |
| collection | NTU |
| description | A three-dimensional crystal plasticity finite element method model is developed to investigate the influence of the grain boundary (GB) misorientation on the equal-channel angular pressing deformation of aluminum bicrystals. Aluminum bicrystals with symmetric 〈112〉 tilt boundaries and misorientations of 9 deg (low angle), 15 deg (transitional), and 30 deg (high angle) have been designed to study the influence of GB misorientations on the deformed areas near GBs. The numerical results indicate that a high-angle grain boundary acts as a barrier in terms of Mises stress distribution, plastic slip, and lattice rotation, while the aluminum bicrystal with low-angle grain boundary still behaves similarly to a single crystal. An intermediate configuration is found for the aluminum bicrystal with transitional grain boundary. It is also found that the geometry of the GB after deformation depends on the initial orientation of the grain at the lower part of the billet. |
| first_indexed | 2024-10-01T06:15:06Z |
| format | Journal Article |
| id | ntu-10356/150177 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T06:15:06Z |
| publishDate | 2021 |
| record_format | dspace |
| spelling | ntu-10356/1501772021-09-22T08:40:03Z On the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals : a three-dimensional crystal plasticity finite element method study Liu, Mao Nambu, Shoichi Zhou, Kun Wang, Pengfei Lu, Guoxing Lu, Cheng Tieu, Kiet A. Koseki, Toshihiko School of Mechanical and Aerospace Engineering Engineering::Mechanical engineering Channel Angular Extrusion Single-crystals A three-dimensional crystal plasticity finite element method model is developed to investigate the influence of the grain boundary (GB) misorientation on the equal-channel angular pressing deformation of aluminum bicrystals. Aluminum bicrystals with symmetric 〈112〉 tilt boundaries and misorientations of 9 deg (low angle), 15 deg (transitional), and 30 deg (high angle) have been designed to study the influence of GB misorientations on the deformed areas near GBs. The numerical results indicate that a high-angle grain boundary acts as a barrier in terms of Mises stress distribution, plastic slip, and lattice rotation, while the aluminum bicrystal with low-angle grain boundary still behaves similarly to a single crystal. An intermediate configuration is found for the aluminum bicrystal with transitional grain boundary. It is also found that the geometry of the GB after deformation depends on the initial orientation of the grain at the lower part of the billet. 2021-09-22T08:40:03Z 2021-09-22T08:40:03Z 2019 Journal Article Liu, M., Nambu, S., Zhou, K., Wang, P., Lu, G., Lu, C., Tieu, K. A. & Koseki, T. (2019). On the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals : a three-dimensional crystal plasticity finite element method study. Metallurgical and Materials Transactions A, 50A(5), 2399-2412. https://dx.doi.org/10.1007/s11661-019-05178-0 1073-5623 https://hdl.handle.net/10356/150177 10.1007/s11661-019-05178-0 2-s2.0-85063097817 5 50A 2399 2412 en Metallurgical and Materials Transactions A © 2019 The Minerals, Metals & Materials Society and ASM International. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Channel Angular Extrusion Single-crystals Liu, Mao Nambu, Shoichi Zhou, Kun Wang, Pengfei Lu, Guoxing Lu, Cheng Tieu, Kiet A. Koseki, Toshihiko On the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals : a three-dimensional crystal plasticity finite element method study |
| title | On the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals : a three-dimensional crystal plasticity finite element method study |
| title_full | On the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals : a three-dimensional crystal plasticity finite element method study |
| title_fullStr | On the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals : a three-dimensional crystal plasticity finite element method study |
| title_full_unstemmed | On the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals : a three-dimensional crystal plasticity finite element method study |
| title_short | On the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals : a three-dimensional crystal plasticity finite element method study |
| title_sort | on the influence of grain boundary misorientation on the severe plastic deformation of aluminum bicrystals a three dimensional crystal plasticity finite element method study |
| topic | Engineering::Mechanical engineering Channel Angular Extrusion Single-crystals |
| url | https://hdl.handle.net/10356/150177 |
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