Microstructure and texture evolution with Sm addition in extruded Mg–Gd–Sm–Zr alloy
We prepared as-extruded Mg-10Gd- x Sm ( x = 1, 3, 5)-0.5Zr alloys by indirect extrusion, and the microstructure, texture and mechanical properties of as-extruded Mg-10Gd- x Sm-0.5Zr alloys were investigated. The results indicate that the microstructure, texture and strength of as-extruded Mg-10Gd-...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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IOP Publishing
2021-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ac25b7 |
| _version_ | 1797746824596946944 |
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| author | Jian Bao Quanan Li Xiaoya Chen Qian Zhang Ziyi Chen |
| author_facet | Jian Bao Quanan Li Xiaoya Chen Qian Zhang Ziyi Chen |
| author_sort | Jian Bao |
| collection | DOAJ |
| description | We prepared as-extruded Mg-10Gd- x Sm ( x = 1, 3, 5)-0.5Zr alloys by indirect extrusion, and the microstructure, texture and mechanical properties of as-extruded Mg-10Gd- x Sm-0.5Zr alloys were investigated. The results indicate that the microstructure, texture and strength of as-extruded Mg-10Gd- x Sm-0.5Zr alloys take a great variation with Sm addition. Dynamic recrystallized grain size is decreased with increasing Sm content, and the average grain size rapidly reduced to 1.4 μ m in as-extruded Mg-10Gd-5Sm-0.5Zr alloys due to abundant Mg _5 (Gd, Sm) and Mg _41 (Gd, Sm) _5 precipitates and their pinning effect on grain boundaries. With an increasing Sm content, the texture has a significant variation. The fiber texture with 〈10-10〉 axis of Mg matrix parallel to extrusion direction (ED) in as-extruded Mg-10Gd-1Sm-0.5Zr alloy transformed into an abnormal texture with 〈0001〉 axis of Mg matrix parallel to ED in as-extruded Mg-10Gd-3Sm-0.5Zr alloy. The tensile yield strength and Brinell hardness gradually increase with Sm addition due to soild solution strengthening, refined grain boundaries strength and numerous precipitates strengthening. However, the as-extruded Mg-10Gd-5Sm-0.5Zr alloy exhibits the poor ductility due to stress concentration caused by abundant precipitates. |
| first_indexed | 2024-03-12T15:42:18Z |
| format | Article |
| id | doaj.art-9b892bcbf4504969832499756409d6e2 |
| institution | Directory Open Access Journal |
| issn | 2053-1591 |
| language | English |
| last_indexed | 2024-03-12T15:42:18Z |
| publishDate | 2021-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | Materials Research Express |
| spelling | doaj.art-9b892bcbf4504969832499756409d6e22023-08-09T15:55:39ZengIOP PublishingMaterials Research Express2053-15912021-01-018909652310.1088/2053-1591/ac25b7Microstructure and texture evolution with Sm addition in extruded Mg–Gd–Sm–Zr alloyJian Bao0Quanan Li1https://orcid.org/0000-0001-5211-9917Xiaoya Chen2Qian Zhang3Ziyi Chen4School of Materials Science and Engineering, Henan University of Science and Technology , Luoyang, 471023, People’s Republic of ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology , Luoyang, 471023, People’s Republic of China; Provincial and Ministerial Co-Construction of Collaborative Innovation Center for Non-Ferrous Metal New Materials and Advanced Processing Technology, Luoyang, 471023, People’s Republic of ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology , Luoyang, 471023, People’s Republic of China; Provincial and Ministerial Co-Construction of Collaborative Innovation Center for Non-Ferrous Metal New Materials and Advanced Processing Technology, Luoyang, 471023, People’s Republic of ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology , Luoyang, 471023, People’s Republic of ChinaSchool of Materials Science and Engineering, Henan University of Science and Technology , Luoyang, 471023, People’s Republic of ChinaWe prepared as-extruded Mg-10Gd- x Sm ( x = 1, 3, 5)-0.5Zr alloys by indirect extrusion, and the microstructure, texture and mechanical properties of as-extruded Mg-10Gd- x Sm-0.5Zr alloys were investigated. The results indicate that the microstructure, texture and strength of as-extruded Mg-10Gd- x Sm-0.5Zr alloys take a great variation with Sm addition. Dynamic recrystallized grain size is decreased with increasing Sm content, and the average grain size rapidly reduced to 1.4 μ m in as-extruded Mg-10Gd-5Sm-0.5Zr alloys due to abundant Mg _5 (Gd, Sm) and Mg _41 (Gd, Sm) _5 precipitates and their pinning effect on grain boundaries. With an increasing Sm content, the texture has a significant variation. The fiber texture with 〈10-10〉 axis of Mg matrix parallel to extrusion direction (ED) in as-extruded Mg-10Gd-1Sm-0.5Zr alloy transformed into an abnormal texture with 〈0001〉 axis of Mg matrix parallel to ED in as-extruded Mg-10Gd-3Sm-0.5Zr alloy. The tensile yield strength and Brinell hardness gradually increase with Sm addition due to soild solution strengthening, refined grain boundaries strength and numerous precipitates strengthening. However, the as-extruded Mg-10Gd-5Sm-0.5Zr alloy exhibits the poor ductility due to stress concentration caused by abundant precipitates.https://doi.org/10.1088/2053-1591/ac25b7Mg–Gd–Sm–Zr alloymicrostructureprecipitatestexturetensile properties |
| spellingShingle | Jian Bao Quanan Li Xiaoya Chen Qian Zhang Ziyi Chen Microstructure and texture evolution with Sm addition in extruded Mg–Gd–Sm–Zr alloy Materials Research Express Mg–Gd–Sm–Zr alloy microstructure precipitates texture tensile properties |
| title | Microstructure and texture evolution with Sm addition in extruded Mg–Gd–Sm–Zr alloy |
| title_full | Microstructure and texture evolution with Sm addition in extruded Mg–Gd–Sm–Zr alloy |
| title_fullStr | Microstructure and texture evolution with Sm addition in extruded Mg–Gd–Sm–Zr alloy |
| title_full_unstemmed | Microstructure and texture evolution with Sm addition in extruded Mg–Gd–Sm–Zr alloy |
| title_short | Microstructure and texture evolution with Sm addition in extruded Mg–Gd–Sm–Zr alloy |
| title_sort | microstructure and texture evolution with sm addition in extruded mg gd sm zr alloy |
| topic | Mg–Gd–Sm–Zr alloy microstructure precipitates texture tensile properties |
| url | https://doi.org/10.1088/2053-1591/ac25b7 |
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