Microstructure evolution and mechanical properties of cup-shaped specimens prepared by rotary backward extrusion
Rotary backward extrusion (RBE) has been proven to be a useful method for preparing high-performance cup-shaped specimens. However, previous relevant studies aimed to investigate small samples. In this paper, large cup-shaped specimens were prepared by RBE at rotary speeds of 0.35 r/min and 0.9 r/mi...
| Main Authors: | , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-03-01
|
| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785423000297 |
| _version_ | 1797858801299226624 |
|---|---|
| author | Chao Liu Jinsheng Ji Jie Zheng Qiang Wang Zhimin Zhang Yong Xue |
| author_facet | Chao Liu Jinsheng Ji Jie Zheng Qiang Wang Zhimin Zhang Yong Xue |
| author_sort | Chao Liu |
| collection | DOAJ |
| description | Rotary backward extrusion (RBE) has been proven to be a useful method for preparing high-performance cup-shaped specimens. However, previous relevant studies aimed to investigate small samples. In this paper, large cup-shaped specimens were prepared by RBE at rotary speeds of 0.35 r/min and 0.9 r/min. The microstructural evolution and properties were analyzed for different regions of the cup wall. The results showed that the obtained microstructure became finer from the outer to inner region, and increasing the rotary speed improved the deformation uniformity and mechanical properties. Continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX) actively contributed to hot deformation. High recrystallization effectively weakened the texture intensity, and the inner region at a rotary speed of 0.9 r/min showed an abnormal texture; this phenomenon was attributed to the activation of nonbasal slip brought by high strains and rare earth contents. Refinement strengthening was a major mechanism during RBE; the highest recrystallization of the region reached 93.1%, and its yield strength (YS), ultimate strength (UTS), and elongation (EL) values were ∼219.3 MPa, ∼298.2 MPa, ∼15.2%, respectively. |
| first_indexed | 2024-04-09T21:19:13Z |
| format | Article |
| id | doaj.art-2ba0be43d05e48acaa102d55af8f4ab8 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-09T21:19:13Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-2ba0be43d05e48acaa102d55af8f4ab82023-03-28T06:45:50ZengElsevierJournal of Materials Research and Technology2238-78542023-03-0123391402Microstructure evolution and mechanical properties of cup-shaped specimens prepared by rotary backward extrusionChao Liu0Jinsheng Ji1Jie Zheng2Qiang Wang3Zhimin Zhang4Yong Xue5College of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaCollege of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaCorresponding author.; College of Materials Science and Engineering, North University of China, Taiyuan 030051, ChinaRotary backward extrusion (RBE) has been proven to be a useful method for preparing high-performance cup-shaped specimens. However, previous relevant studies aimed to investigate small samples. In this paper, large cup-shaped specimens were prepared by RBE at rotary speeds of 0.35 r/min and 0.9 r/min. The microstructural evolution and properties were analyzed for different regions of the cup wall. The results showed that the obtained microstructure became finer from the outer to inner region, and increasing the rotary speed improved the deformation uniformity and mechanical properties. Continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX) actively contributed to hot deformation. High recrystallization effectively weakened the texture intensity, and the inner region at a rotary speed of 0.9 r/min showed an abnormal texture; this phenomenon was attributed to the activation of nonbasal slip brought by high strains and rare earth contents. Refinement strengthening was a major mechanism during RBE; the highest recrystallization of the region reached 93.1%, and its yield strength (YS), ultimate strength (UTS), and elongation (EL) values were ∼219.3 MPa, ∼298.2 MPa, ∼15.2%, respectively.http://www.sciencedirect.com/science/article/pii/S2238785423000297Mg-Gd-Y-Zn-Zr alloyRotary backward extrusionMicrostructureTexture |
| spellingShingle | Chao Liu Jinsheng Ji Jie Zheng Qiang Wang Zhimin Zhang Yong Xue Microstructure evolution and mechanical properties of cup-shaped specimens prepared by rotary backward extrusion Journal of Materials Research and Technology Mg-Gd-Y-Zn-Zr alloy Rotary backward extrusion Microstructure Texture |
| title | Microstructure evolution and mechanical properties of cup-shaped specimens prepared by rotary backward extrusion |
| title_full | Microstructure evolution and mechanical properties of cup-shaped specimens prepared by rotary backward extrusion |
| title_fullStr | Microstructure evolution and mechanical properties of cup-shaped specimens prepared by rotary backward extrusion |
| title_full_unstemmed | Microstructure evolution and mechanical properties of cup-shaped specimens prepared by rotary backward extrusion |
| title_short | Microstructure evolution and mechanical properties of cup-shaped specimens prepared by rotary backward extrusion |
| title_sort | microstructure evolution and mechanical properties of cup shaped specimens prepared by rotary backward extrusion |
| topic | Mg-Gd-Y-Zn-Zr alloy Rotary backward extrusion Microstructure Texture |
| url | http://www.sciencedirect.com/science/article/pii/S2238785423000297 |
| work_keys_str_mv | AT chaoliu microstructureevolutionandmechanicalpropertiesofcupshapedspecimenspreparedbyrotarybackwardextrusion AT jinshengji microstructureevolutionandmechanicalpropertiesofcupshapedspecimenspreparedbyrotarybackwardextrusion AT jiezheng microstructureevolutionandmechanicalpropertiesofcupshapedspecimenspreparedbyrotarybackwardextrusion AT qiangwang microstructureevolutionandmechanicalpropertiesofcupshapedspecimenspreparedbyrotarybackwardextrusion AT zhiminzhang microstructureevolutionandmechanicalpropertiesofcupshapedspecimenspreparedbyrotarybackwardextrusion AT yongxue microstructureevolutionandmechanicalpropertiesofcupshapedspecimenspreparedbyrotarybackwardextrusion |