Evaluation of the reliability of twin variant analysis in Mg alloys by in situ EBSD technique
Electron backscatter diffraction (EBSD) is an orientation mapping technique, which has been widely used to study texture evolution and twinning behavior. This work aims to study the variant of {101¯2} twins during tensile deformation of AZ31 Mg alloys. An in-situ tensile stage was used, and coupled...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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KeAi Communications Co., Ltd.
2019-06-01
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| Series: | Journal of Magnesium and Alloys |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2213956719300209 |
| _version_ | 1797203889275011072 |
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| author | Feiya Liu Changfa Guo Renlong Xin Guilin Wu Qing Liu |
| author_facet | Feiya Liu Changfa Guo Renlong Xin Guilin Wu Qing Liu |
| author_sort | Feiya Liu |
| collection | DOAJ |
| description | Electron backscatter diffraction (EBSD) is an orientation mapping technique, which has been widely used to study texture evolution and twinning behavior. This work aims to study the variant of {101¯2} twins during tensile deformation of AZ31 Mg alloys. An in-situ tensile stage was used, and coupled with EBSD technique, the variants of twins can be analyzed without releasing the tensile stress. Based on the EBSD maps, the first and second smallest misorientation angles (M1 and M2) between each active twin and respective potential variants were calculated, and the distribution of M1 values with tensile strain was obtained. The results indicated that {101¯2} twins were deviated from their ideal orientations with strain increased. The criteria of M1<4° and M2−M1>2° were suggested to be applied to select the data points for reliable variant identification. Moreover, it confirmed that the deviation of twin relationship was ascribed to the profuse basal glide in matrices and/or twins. Keywords: Twinning, Variant identification, Magnesium alloy, Lattice rotation, EBSD |
| first_indexed | 2024-04-24T08:26:30Z |
| format | Article |
| id | doaj.art-028050228c2543e6a3ed06f50f7d24ab |
| institution | Directory Open Access Journal |
| issn | 2213-9567 |
| language | English |
| last_indexed | 2024-04-24T08:26:30Z |
| publishDate | 2019-06-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Magnesium and Alloys |
| spelling | doaj.art-028050228c2543e6a3ed06f50f7d24ab2024-04-16T22:04:04ZengKeAi Communications Co., Ltd.Journal of Magnesium and Alloys2213-95672019-06-0172258263Evaluation of the reliability of twin variant analysis in Mg alloys by in situ EBSD techniqueFeiya Liu0Changfa Guo1Renlong Xin2Guilin Wu3Qing Liu4Joint International Laboratory for Light Alloys (MOE), College of Materials Science and Engineering, Chongqing University, Sha Zheng Jie 174, Sha Ping Ba District, Chongqing, ChinaJoint International Laboratory for Light Alloys (MOE), College of Materials Science and Engineering, Chongqing University, Sha Zheng Jie 174, Sha Ping Ba District, Chongqing, China; College of Materials Science and Engineering, China Jiliang University, Hangzhou, ChinaJoint International Laboratory for Light Alloys (MOE), College of Materials Science and Engineering, Chongqing University, Sha Zheng Jie 174, Sha Ping Ba District, Chongqing, China; Corresponding author.Joint International Laboratory for Light Alloys (MOE), College of Materials Science and Engineering, Chongqing University, Sha Zheng Jie 174, Sha Ping Ba District, Chongqing, ChinaJoint International Laboratory for Light Alloys (MOE), College of Materials Science and Engineering, Chongqing University, Sha Zheng Jie 174, Sha Ping Ba District, Chongqing, ChinaElectron backscatter diffraction (EBSD) is an orientation mapping technique, which has been widely used to study texture evolution and twinning behavior. This work aims to study the variant of {101¯2} twins during tensile deformation of AZ31 Mg alloys. An in-situ tensile stage was used, and coupled with EBSD technique, the variants of twins can be analyzed without releasing the tensile stress. Based on the EBSD maps, the first and second smallest misorientation angles (M1 and M2) between each active twin and respective potential variants were calculated, and the distribution of M1 values with tensile strain was obtained. The results indicated that {101¯2} twins were deviated from their ideal orientations with strain increased. The criteria of M1<4° and M2−M1>2° were suggested to be applied to select the data points for reliable variant identification. Moreover, it confirmed that the deviation of twin relationship was ascribed to the profuse basal glide in matrices and/or twins. Keywords: Twinning, Variant identification, Magnesium alloy, Lattice rotation, EBSDhttp://www.sciencedirect.com/science/article/pii/S2213956719300209 |
| spellingShingle | Feiya Liu Changfa Guo Renlong Xin Guilin Wu Qing Liu Evaluation of the reliability of twin variant analysis in Mg alloys by in situ EBSD technique Journal of Magnesium and Alloys |
| title | Evaluation of the reliability of twin variant analysis in Mg alloys by in situ EBSD technique |
| title_full | Evaluation of the reliability of twin variant analysis in Mg alloys by in situ EBSD technique |
| title_fullStr | Evaluation of the reliability of twin variant analysis in Mg alloys by in situ EBSD technique |
| title_full_unstemmed | Evaluation of the reliability of twin variant analysis in Mg alloys by in situ EBSD technique |
| title_short | Evaluation of the reliability of twin variant analysis in Mg alloys by in situ EBSD technique |
| title_sort | evaluation of the reliability of twin variant analysis in mg alloys by in situ ebsd technique |
| url | http://www.sciencedirect.com/science/article/pii/S2213956719300209 |
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