Quantitative prediction of grain boundary misorientation effect on twin transmission in hexagonal metals
Intergranular twinning shear transmission through twin-twin accommodation, which plays an important role on microstructure evolution, is often observed in deformed hexagonal metals. The shear transmitted between two connected twins is m′s, where m′ is the geometrical compatibility factor and s is th...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2020-07-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127520302793 |
| _version_ | 1819229797337792512 |
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| author | Xiao Song Jinru Luo Zhangzhi Shi Linzhong Zhuang Yi Qiao Jishan Zhang |
| author_facet | Xiao Song Jinru Luo Zhangzhi Shi Linzhong Zhuang Yi Qiao Jishan Zhang |
| author_sort | Xiao Song |
| collection | DOAJ |
| description | Intergranular twinning shear transmission through twin-twin accommodation, which plays an important role on microstructure evolution, is often observed in deformed hexagonal metals. The shear transmitted between two connected twins is m′s, where m′ is the geometrical compatibility factor and s is the magnitude of the original shear. However, the quantitative correlation between the grain boundary misorientation (GBM) and m′ factor for shear transmission is unknown. In the present study, we developed an m′-GBM map to tackle this problem. The map is applied to {112¯2}–{112¯2}, {112¯2}–{112¯4} and {112¯4}–{112¯4} twin pairs in Ti, which have rarely been reported before but are profuse in a cryorolled state. Favorable GBM for the formation of these twin pairs is revealed by the map. Specifically, the map shows that low GBM angles (<15°) are conducive to the formation of {112¯2}–{112¯2} and {112¯4}–{112¯4} twin pairs. The map also reveals that both the {112¯2}–{112¯2} and {112¯2}–{112¯4} twin pairs tend to occur at grain boundaries with media angles (15°–45°), depending on the location of the corresponding GBM axis in the m′-GBM map. These predictions were then verified by experimental analysis. |
| first_indexed | 2024-12-23T11:18:53Z |
| format | Article |
| id | doaj.art-f8751955e6b14dd0851e26484db2ace5 |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-12-23T11:18:53Z |
| publishDate | 2020-07-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-f8751955e6b14dd0851e26484db2ace52022-12-21T17:49:08ZengElsevierMaterials & Design0264-12752020-07-01192108745Quantitative prediction of grain boundary misorientation effect on twin transmission in hexagonal metalsXiao Song0Jinru Luo1Zhangzhi Shi2Linzhong Zhuang3Yi Qiao4Jishan Zhang5State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaInstitute of Materials, China Academy of Engineering Physics, Mianyang 621908, Sichuan, China; Corresponding authors.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, ChinaState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China; Corresponding authors.Intergranular twinning shear transmission through twin-twin accommodation, which plays an important role on microstructure evolution, is often observed in deformed hexagonal metals. The shear transmitted between two connected twins is m′s, where m′ is the geometrical compatibility factor and s is the magnitude of the original shear. However, the quantitative correlation between the grain boundary misorientation (GBM) and m′ factor for shear transmission is unknown. In the present study, we developed an m′-GBM map to tackle this problem. The map is applied to {112¯2}–{112¯2}, {112¯2}–{112¯4} and {112¯4}–{112¯4} twin pairs in Ti, which have rarely been reported before but are profuse in a cryorolled state. Favorable GBM for the formation of these twin pairs is revealed by the map. Specifically, the map shows that low GBM angles (<15°) are conducive to the formation of {112¯2}–{112¯2} and {112¯4}–{112¯4} twin pairs. The map also reveals that both the {112¯2}–{112¯2} and {112¯2}–{112¯4} twin pairs tend to occur at grain boundaries with media angles (15°–45°), depending on the location of the corresponding GBM axis in the m′-GBM map. These predictions were then verified by experimental analysis.http://www.sciencedirect.com/science/article/pii/S0264127520302793TwinningMicrostructureGrain boundaryTitaniumElectron backscatter diffraction |
| spellingShingle | Xiao Song Jinru Luo Zhangzhi Shi Linzhong Zhuang Yi Qiao Jishan Zhang Quantitative prediction of grain boundary misorientation effect on twin transmission in hexagonal metals Materials & Design Twinning Microstructure Grain boundary Titanium Electron backscatter diffraction |
| title | Quantitative prediction of grain boundary misorientation effect on twin transmission in hexagonal metals |
| title_full | Quantitative prediction of grain boundary misorientation effect on twin transmission in hexagonal metals |
| title_fullStr | Quantitative prediction of grain boundary misorientation effect on twin transmission in hexagonal metals |
| title_full_unstemmed | Quantitative prediction of grain boundary misorientation effect on twin transmission in hexagonal metals |
| title_short | Quantitative prediction of grain boundary misorientation effect on twin transmission in hexagonal metals |
| title_sort | quantitative prediction of grain boundary misorientation effect on twin transmission in hexagonal metals |
| topic | Twinning Microstructure Grain boundary Titanium Electron backscatter diffraction |
| url | http://www.sciencedirect.com/science/article/pii/S0264127520302793 |
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