Effect of shear stress and compressive stress deformation on LPSO phase kink behavior of Mg-Gd-Y-Zn-Zr alloy
Using torsion and compression experiments, the kink behavior of the long period stacking ordered (LPSO) phase under different stress deformation of the Mg-13Gd-4Y-2Zn-0.5Zr alloy were studied. The results show that different stress states have different effects on the kink of LPSO phase. The grain d...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2022-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ac5203 |
| _version_ | 1797746699940134912 |
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| author | Yaojin Wu Yingze Meng Huisheng Yu Yayun He Jianmin Yu Zhen Wang Zhimin Zhang |
| author_facet | Yaojin Wu Yingze Meng Huisheng Yu Yayun He Jianmin Yu Zhen Wang Zhimin Zhang |
| author_sort | Yaojin Wu |
| collection | DOAJ |
| description | Using torsion and compression experiments, the kink behavior of the long period stacking ordered (LPSO) phase under different stress deformation of the Mg-13Gd-4Y-2Zn-0.5Zr alloy were studied. The results show that different stress states have different effects on the kink of LPSO phase. The grain deformation of the shear stress deformed (SSD) alloy is relatively weak, where LPSO phases are mostly C-shaped or S-shaped kinks. The kink forms can be divided into parallel kinks and angular kinks. The grains of compressive stress deformed (CSD) alloy are significantly elongated and perpendicular to the compression direction, in which occur more Z-shaped zigzag kinks. The kink angle and kink times of the shear stress deformed alloy are small, while the relative kink width is larger. There are large number kink bands during compressive stress deformation, almost all of which are distributed in perpendicular to the compression direction. The difference in the kink behavior is due to the non-basal slip of SSD is easy to active, while in the CSD alloy, the non-basal slip is relatively difficult to active, resulting in more dislocation pile-up. Different forms of kinks can release stress concentration, and all of kinks make the grains deflect in the direction with higher non-basal slip schmid factor. |
| first_indexed | 2024-03-12T15:40:36Z |
| format | Article |
| id | doaj.art-d6eef11b54ea4c10a7892766814a336d |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:40:36Z |
| publishDate | 2022-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-d6eef11b54ea4c10a7892766814a336d2023-08-09T16:01:04ZengIOP PublishingMaterials Research Express2053-15912022-01-019202651810.1088/2053-1591/ac5203Effect of shear stress and compressive stress deformation on LPSO phase kink behavior of Mg-Gd-Y-Zn-Zr alloyYaojin Wu0Yingze Meng1Huisheng Yu2Yayun He3https://orcid.org/0000-0003-1777-0848Jianmin Yu4Zhen Wang5Zhimin Zhang6College of Mechanical and Electrical Engineering, North University of China , Taiyuan, 030051, People’s Republic of ChinaBeijing Aerospace Automatic Control Institute, Beijing,100854, People’s Republic of ChinaBeijing Institute of Radio Measurement, Beijing 100854, People’s Republic of ChinaCollege of Mechanical and Electrical Engineering, North University of China , Taiyuan, 030051, People’s Republic of ChinaCollege of Materials Science and Engineering, North University of China , Taiyuan, 030051, People’s Republic of ChinaCollege of Mechanical and Electrical Engineering, North University of China , Taiyuan, 030051, People’s Republic of ChinaCollege of Mechanical and Electrical Engineering, North University of China , Taiyuan, 030051, People’s Republic of ChinaUsing torsion and compression experiments, the kink behavior of the long period stacking ordered (LPSO) phase under different stress deformation of the Mg-13Gd-4Y-2Zn-0.5Zr alloy were studied. The results show that different stress states have different effects on the kink of LPSO phase. The grain deformation of the shear stress deformed (SSD) alloy is relatively weak, where LPSO phases are mostly C-shaped or S-shaped kinks. The kink forms can be divided into parallel kinks and angular kinks. The grains of compressive stress deformed (CSD) alloy are significantly elongated and perpendicular to the compression direction, in which occur more Z-shaped zigzag kinks. The kink angle and kink times of the shear stress deformed alloy are small, while the relative kink width is larger. There are large number kink bands during compressive stress deformation, almost all of which are distributed in perpendicular to the compression direction. The difference in the kink behavior is due to the non-basal slip of SSD is easy to active, while in the CSD alloy, the non-basal slip is relatively difficult to active, resulting in more dislocation pile-up. Different forms of kinks can release stress concentration, and all of kinks make the grains deflect in the direction with higher non-basal slip schmid factor.https://doi.org/10.1088/2053-1591/ac5203LPSOMg-REmicrostructurekink |
| spellingShingle | Yaojin Wu Yingze Meng Huisheng Yu Yayun He Jianmin Yu Zhen Wang Zhimin Zhang Effect of shear stress and compressive stress deformation on LPSO phase kink behavior of Mg-Gd-Y-Zn-Zr alloy Materials Research Express LPSO Mg-RE microstructure kink |
| title | Effect of shear stress and compressive stress deformation on LPSO phase kink behavior of Mg-Gd-Y-Zn-Zr alloy |
| title_full | Effect of shear stress and compressive stress deformation on LPSO phase kink behavior of Mg-Gd-Y-Zn-Zr alloy |
| title_fullStr | Effect of shear stress and compressive stress deformation on LPSO phase kink behavior of Mg-Gd-Y-Zn-Zr alloy |
| title_full_unstemmed | Effect of shear stress and compressive stress deformation on LPSO phase kink behavior of Mg-Gd-Y-Zn-Zr alloy |
| title_short | Effect of shear stress and compressive stress deformation on LPSO phase kink behavior of Mg-Gd-Y-Zn-Zr alloy |
| title_sort | effect of shear stress and compressive stress deformation on lpso phase kink behavior of mg gd y zn zr alloy |
| topic | LPSO Mg-RE microstructure kink |
| url | https://doi.org/10.1088/2053-1591/ac5203 |
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