Effect of a homogeneous recrystallized microstructure and a bimodal microstructure on mechanical properties in Mg-5Zn-0.6Zr alloys
For typical Mg-Zn-Zr alloys, exhilaratingly high strength of a yield strength (YS) higher than 300 MPa can hardly be attained by traditional rolling. In this paper, we compare the mechanical properties and strengthening mechanisms of the Mg-5Zn-0.6Zr alloys having a homogeneous dynamical recrystalli...
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KeAi Communications Co., Ltd.
2023-09-01
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| Series: | Resources Chemicals and Materials |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S277244332300017X |
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| author | Hang Zhang Xiang Xiao Rongguang Li Di Wu Ruizhi Wu Boshu Liu Shanshan Li Jingren Li |
| author_facet | Hang Zhang Xiang Xiao Rongguang Li Di Wu Ruizhi Wu Boshu Liu Shanshan Li Jingren Li |
| author_sort | Hang Zhang |
| collection | DOAJ |
| description | For typical Mg-Zn-Zr alloys, exhilaratingly high strength of a yield strength (YS) higher than 300 MPa can hardly be attained by traditional rolling. In this paper, we compare the mechanical properties and strengthening mechanisms of the Mg-5Zn-0.6Zr alloys having a homogeneous dynamical recrystallized microstructure and a bimodal microstructure with high-density nano substructures. The Mg-5Zn-0.6Zr alloy with the bimodal microstructure (rolled at 150 °C with a thickness reduction of 60%) exhibits a YS of 332 MPa, an ultimate tensile strength (UTS) of 360 MPa, and an elongation of 5%. The high strength is attributed to the microstructure with high-density nano substructures, high-density nano (Mg, Zr)Zn2 precipitates, ultrafine recrystallized grains, and strong basal texture. In comparison, the Mg-5Zn-0.6Zr alloy with homogeneous microstructure (rolled at 200 °C with a thickness reduction of 70%) exhibits a YS of 209 MPa, an UTS of 317 MPa, and an elongation of 17%, which contains coarser recrystallized grains, coarser precipitates, weaker texture, and lower density of dislocations, further resulting in low strength. The difference between the strengthening mechanism in two kinds of microstructure is discussed in detail. The results facilitate the preparation of wrought Magnesium alloy with high strength by reasonable microstructure construction. |
| first_indexed | 2024-03-12T05:58:09Z |
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| id | doaj.art-fa5b143f05a54a7a8457807ae7d39a60 |
| institution | Directory Open Access Journal |
| issn | 2772-4433 |
| language | English |
| last_indexed | 2024-03-12T05:58:09Z |
| publishDate | 2023-09-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Resources Chemicals and Materials |
| spelling | doaj.art-fa5b143f05a54a7a8457807ae7d39a602023-09-03T04:24:37ZengKeAi Communications Co., Ltd.Resources Chemicals and Materials2772-44332023-09-0123208214Effect of a homogeneous recrystallized microstructure and a bimodal microstructure on mechanical properties in Mg-5Zn-0.6Zr alloysHang Zhang0Xiang Xiao1Rongguang Li2Di Wu3Ruizhi Wu4Boshu Liu5Shanshan Li6Jingren Li7School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China; Corresponding authors.School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, ChinaSchool of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China; Corresponding authors.School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, ChinaKey Laboratory of Superlight Materials & Surface Technology, Ministry of Education, Harbin Engineering University, Harbin 150001, ChinaSchool of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, China; Corresponding authors.School of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, ChinaSchool of Mechanical and Power Engineering, Shenyang University of Chemical Technology, Shenyang 110142, ChinaFor typical Mg-Zn-Zr alloys, exhilaratingly high strength of a yield strength (YS) higher than 300 MPa can hardly be attained by traditional rolling. In this paper, we compare the mechanical properties and strengthening mechanisms of the Mg-5Zn-0.6Zr alloys having a homogeneous dynamical recrystallized microstructure and a bimodal microstructure with high-density nano substructures. The Mg-5Zn-0.6Zr alloy with the bimodal microstructure (rolled at 150 °C with a thickness reduction of 60%) exhibits a YS of 332 MPa, an ultimate tensile strength (UTS) of 360 MPa, and an elongation of 5%. The high strength is attributed to the microstructure with high-density nano substructures, high-density nano (Mg, Zr)Zn2 precipitates, ultrafine recrystallized grains, and strong basal texture. In comparison, the Mg-5Zn-0.6Zr alloy with homogeneous microstructure (rolled at 200 °C with a thickness reduction of 70%) exhibits a YS of 209 MPa, an UTS of 317 MPa, and an elongation of 17%, which contains coarser recrystallized grains, coarser precipitates, weaker texture, and lower density of dislocations, further resulting in low strength. The difference between the strengthening mechanism in two kinds of microstructure is discussed in detail. The results facilitate the preparation of wrought Magnesium alloy with high strength by reasonable microstructure construction.http://www.sciencedirect.com/science/article/pii/S277244332300017XMagnesium alloyNano substructuresNano precipitatesBimodal grain structureDynamical recrystallization |
| spellingShingle | Hang Zhang Xiang Xiao Rongguang Li Di Wu Ruizhi Wu Boshu Liu Shanshan Li Jingren Li Effect of a homogeneous recrystallized microstructure and a bimodal microstructure on mechanical properties in Mg-5Zn-0.6Zr alloys Resources Chemicals and Materials Magnesium alloy Nano substructures Nano precipitates Bimodal grain structure Dynamical recrystallization |
| title | Effect of a homogeneous recrystallized microstructure and a bimodal microstructure on mechanical properties in Mg-5Zn-0.6Zr alloys |
| title_full | Effect of a homogeneous recrystallized microstructure and a bimodal microstructure on mechanical properties in Mg-5Zn-0.6Zr alloys |
| title_fullStr | Effect of a homogeneous recrystallized microstructure and a bimodal microstructure on mechanical properties in Mg-5Zn-0.6Zr alloys |
| title_full_unstemmed | Effect of a homogeneous recrystallized microstructure and a bimodal microstructure on mechanical properties in Mg-5Zn-0.6Zr alloys |
| title_short | Effect of a homogeneous recrystallized microstructure and a bimodal microstructure on mechanical properties in Mg-5Zn-0.6Zr alloys |
| title_sort | effect of a homogeneous recrystallized microstructure and a bimodal microstructure on mechanical properties in mg 5zn 0 6zr alloys |
| topic | Magnesium alloy Nano substructures Nano precipitates Bimodal grain structure Dynamical recrystallization |
| url | http://www.sciencedirect.com/science/article/pii/S277244332300017X |
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