A high-performance TRIP Mg-Sc-Zn alloy enhanced by fine grain strengthening and nano-precipitate strengthening
The Mg–Sc alloys have attracted considerable attention from researchers due to their martensitic transformation behavior. However, the relatively low yield strength limits their practical application. Thus, Zn alloying combined with annealing treatment was used to improve the mechanical properties b...
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Elsevier
2024-11-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785424023615 |
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| author | Ruxia Liu Wei Zhao Guilin Wu Shuize Wang Jian Zhang Yong Xiao Xinping Mao |
| author_facet | Ruxia Liu Wei Zhao Guilin Wu Shuize Wang Jian Zhang Yong Xiao Xinping Mao |
| author_sort | Ruxia Liu |
| collection | DOAJ |
| description | The Mg–Sc alloys have attracted considerable attention from researchers due to their martensitic transformation behavior. However, the relatively low yield strength limits their practical application. Thus, Zn alloying combined with annealing treatment was used to improve the mechanical properties by modulating its microstructure. Zn alloying can effectively delay the recrystallization rate and refine the grain size of the alloy. The β/α intensity ratio and grain size of β phase increase with the increasing annealing temperature. When the annealing temperature is 600 °C, the major phase is β-Mg-Sc with minor α-Mg-Sc, ScZn and Mg3Sc phases. Further increasing the temperature to 650 °C would lead to the dissolution of ScZn and Mg3Sc phases into the matrix, resulting in smaller precipitations. The Mg-Sc-Zn alloy annealed at 600 °C for 60 min owns the best comprehensive mechanical properties, with yield strength, ultimate tensile strength, and elongation of 307.2 MPa, 330.5 MPa, and 21.1%, respectively. Further TEM analysis reveals that fine grain reinforcement, precipitation reinforcement, and stress-induced martensitic transformation during tensile deformation are the main factors for the enhancement of strength and ductility in this alloy. |
| format | Article |
| id | doaj-art-4e3d5aa8cf53484cac3152ea04c7cc64 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-4e3d5aa8cf53484cac3152ea04c7cc642025-08-20T02:39:01ZengElsevierJournal of Materials Research and Technology2238-78542024-11-01333874388110.1016/j.jmrt.2024.10.091A high-performance TRIP Mg-Sc-Zn alloy enhanced by fine grain strengthening and nano-precipitate strengtheningRuxia Liu0Wei Zhao1Guilin Wu2Shuize Wang3Jian Zhang4Yong Xiao5Xinping Mao6Institute for Carbon Neutrality, University of Science and Technology Beijing, Beijing, 100083, China; State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China; Corresponding author. Institute for Carbon Neutrality, University of Science and Technology Beijing, Beijing, 100083, China.State Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, ChinaInstitute for Carbon Neutrality, University of Science and Technology Beijing, Beijing, 100083, China; Corresponding author.Institute for Carbon Neutrality, University of Science and Technology Beijing, Beijing, 100083, ChinaState Key Lab of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China; Corresponding author.School of Materials Science and Engineering, Wuhan University of Technology, Wuhan, 430070, ChinaInstitute for Carbon Neutrality, University of Science and Technology Beijing, Beijing, 100083, ChinaThe Mg–Sc alloys have attracted considerable attention from researchers due to their martensitic transformation behavior. However, the relatively low yield strength limits their practical application. Thus, Zn alloying combined with annealing treatment was used to improve the mechanical properties by modulating its microstructure. Zn alloying can effectively delay the recrystallization rate and refine the grain size of the alloy. The β/α intensity ratio and grain size of β phase increase with the increasing annealing temperature. When the annealing temperature is 600 °C, the major phase is β-Mg-Sc with minor α-Mg-Sc, ScZn and Mg3Sc phases. Further increasing the temperature to 650 °C would lead to the dissolution of ScZn and Mg3Sc phases into the matrix, resulting in smaller precipitations. The Mg-Sc-Zn alloy annealed at 600 °C for 60 min owns the best comprehensive mechanical properties, with yield strength, ultimate tensile strength, and elongation of 307.2 MPa, 330.5 MPa, and 21.1%, respectively. Further TEM analysis reveals that fine grain reinforcement, precipitation reinforcement, and stress-induced martensitic transformation during tensile deformation are the main factors for the enhancement of strength and ductility in this alloy.http://www.sciencedirect.com/science/article/pii/S2238785424023615Mg-Sc alloyZn alloyingAnnealingStress-induced martensitic transformationStrengthening mechanisms |
| spellingShingle | Ruxia Liu Wei Zhao Guilin Wu Shuize Wang Jian Zhang Yong Xiao Xinping Mao A high-performance TRIP Mg-Sc-Zn alloy enhanced by fine grain strengthening and nano-precipitate strengthening Journal of Materials Research and Technology Mg-Sc alloy Zn alloying Annealing Stress-induced martensitic transformation Strengthening mechanisms |
| title | A high-performance TRIP Mg-Sc-Zn alloy enhanced by fine grain strengthening and nano-precipitate strengthening |
| title_full | A high-performance TRIP Mg-Sc-Zn alloy enhanced by fine grain strengthening and nano-precipitate strengthening |
| title_fullStr | A high-performance TRIP Mg-Sc-Zn alloy enhanced by fine grain strengthening and nano-precipitate strengthening |
| title_full_unstemmed | A high-performance TRIP Mg-Sc-Zn alloy enhanced by fine grain strengthening and nano-precipitate strengthening |
| title_short | A high-performance TRIP Mg-Sc-Zn alloy enhanced by fine grain strengthening and nano-precipitate strengthening |
| title_sort | high performance trip mg sc zn alloy enhanced by fine grain strengthening and nano precipitate strengthening |
| topic | Mg-Sc alloy Zn alloying Annealing Stress-induced martensitic transformation Strengthening mechanisms |
| url | http://www.sciencedirect.com/science/article/pii/S2238785424023615 |
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