Deformation mechanism and resultant microstructural characteristics in extruded dilute Mg-0.1Bi-0.1Sn alloy with bimodal-sized grain structure under compression
In this study, we examine in detail the hot deformation mechanism and dynamic recrystallization (DRX) behavior in a novel precipitate-free Mg-0.1Bi-0.1Sn alloy during hot compression conducted at 200–350 °C, with strain rate of 0.33–10 s−1. The obtained correlation coefficient is 0.98024, indicating...
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2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| author | Lei Zhang Wei-li Cheng Jian-wei Kang Guo-lei Liu Jin-hui Wang Li-fei Wang Hang Li Hong-xia Wang Zhi-yong You Hui Yu |
| author_facet | Lei Zhang Wei-li Cheng Jian-wei Kang Guo-lei Liu Jin-hui Wang Li-fei Wang Hang Li Hong-xia Wang Zhi-yong You Hui Yu |
| author_sort | Lei Zhang |
| collection | DOAJ |
| description | In this study, we examine in detail the hot deformation mechanism and dynamic recrystallization (DRX) behavior in a novel precipitate-free Mg-0.1Bi-0.1Sn alloy during hot compression conducted at 200–350 °C, with strain rate of 0.33–10 s−1. The obtained correlation coefficient is 0.98024, indicating that the present constitutive equation can adequately predict the hot deformation behavior of the studied alloy. The calculated average activation energy is 180.427 kJ/mol. According to the processing maps, the ideal processing areas correspond to the conditions of 325–350 °C/0.33–1 s−1. Under the low Z deformation condition, the basal slip dominates at the initial and later stages, while the pyramidal slip is dominate at the intermediate stage. Meanwhile, the continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX) processes co-occur during hot compression. More specifically, in the initial stage, DDRX dominates over the DRX mechanism, and is accompanied by twinning induced dynamic recrystallization (TDRX). In the intermediate stage, CDRX, TDRX and DDRX prevail as the dominant DRX mechanisms. Throughout the strain stage, DDRX dominates over the DRX mechanism. The occurrence of TDRX and CDRX is beneficial to weakening the texture intensity and promoting the development of CD-tilted texture. |
| format | Article |
| id | doaj-art-5b752f171fc74a2a9101d2fe2d96c098 |
| institution | Kabale University |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-5b752f171fc74a2a9101d2fe2d96c0982024-12-26T08:55:42ZengElsevierJournal of Materials Research and Technology2238-78542024-11-013393349343Deformation mechanism and resultant microstructural characteristics in extruded dilute Mg-0.1Bi-0.1Sn alloy with bimodal-sized grain structure under compressionLei Zhang0Wei-li Cheng1Jian-wei Kang2Guo-lei Liu3Jin-hui Wang4Li-fei Wang5Hang Li6Hong-xia Wang7Zhi-yong You8Hui Yu9Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, ChinaQinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China; School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China; Corresponding author. Qinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, China.School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaSchool of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaQinghai Provincial Key Laboratory of New Light Alloys, Qinghai Provincial Engineering Research Center of High Performance Light Metal Alloys and Forming, Qinghai University, Xining 810016, ChinaSchool of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaSchool of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaSchool of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaSchool of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, ChinaSchool of Materials Science and Engineering, Hebei University of Technology, Tianjin 300132, ChinaIn this study, we examine in detail the hot deformation mechanism and dynamic recrystallization (DRX) behavior in a novel precipitate-free Mg-0.1Bi-0.1Sn alloy during hot compression conducted at 200–350 °C, with strain rate of 0.33–10 s−1. The obtained correlation coefficient is 0.98024, indicating that the present constitutive equation can adequately predict the hot deformation behavior of the studied alloy. The calculated average activation energy is 180.427 kJ/mol. According to the processing maps, the ideal processing areas correspond to the conditions of 325–350 °C/0.33–1 s−1. Under the low Z deformation condition, the basal slip dominates at the initial and later stages, while the pyramidal slip is dominate at the intermediate stage. Meanwhile, the continuous dynamic recrystallization (CDRX) and discontinuous dynamic recrystallization (DDRX) processes co-occur during hot compression. More specifically, in the initial stage, DDRX dominates over the DRX mechanism, and is accompanied by twinning induced dynamic recrystallization (TDRX). In the intermediate stage, CDRX, TDRX and DDRX prevail as the dominant DRX mechanisms. Throughout the strain stage, DDRX dominates over the DRX mechanism. The occurrence of TDRX and CDRX is beneficial to weakening the texture intensity and promoting the development of CD-tilted texture.http://www.sciencedirect.com/science/article/pii/S223878542402670XDilute Mg alloyHot compressionProcessing mapConstitutive equationDynamic recrystallizationTexture |
| spellingShingle | Lei Zhang Wei-li Cheng Jian-wei Kang Guo-lei Liu Jin-hui Wang Li-fei Wang Hang Li Hong-xia Wang Zhi-yong You Hui Yu Deformation mechanism and resultant microstructural characteristics in extruded dilute Mg-0.1Bi-0.1Sn alloy with bimodal-sized grain structure under compression Journal of Materials Research and Technology Dilute Mg alloy Hot compression Processing map Constitutive equation Dynamic recrystallization Texture |
| title | Deformation mechanism and resultant microstructural characteristics in extruded dilute Mg-0.1Bi-0.1Sn alloy with bimodal-sized grain structure under compression |
| title_full | Deformation mechanism and resultant microstructural characteristics in extruded dilute Mg-0.1Bi-0.1Sn alloy with bimodal-sized grain structure under compression |
| title_fullStr | Deformation mechanism and resultant microstructural characteristics in extruded dilute Mg-0.1Bi-0.1Sn alloy with bimodal-sized grain structure under compression |
| title_full_unstemmed | Deformation mechanism and resultant microstructural characteristics in extruded dilute Mg-0.1Bi-0.1Sn alloy with bimodal-sized grain structure under compression |
| title_short | Deformation mechanism and resultant microstructural characteristics in extruded dilute Mg-0.1Bi-0.1Sn alloy with bimodal-sized grain structure under compression |
| title_sort | deformation mechanism and resultant microstructural characteristics in extruded dilute mg 0 1bi 0 1sn alloy with bimodal sized grain structure under compression |
| topic | Dilute Mg alloy Hot compression Processing map Constitutive equation Dynamic recrystallization Texture |
| url | http://www.sciencedirect.com/science/article/pii/S223878542402670X |
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