Microstructure and Tensile Property Tailoring of Al–5Mg (wt%) Alloy Combined with Continuous Rheo-Extrusion and Sc Modification
In this work, Al–Mg alloys fabricated by combining continuous rheo-extrusion (CRE) and Sc modification were proposed for producing Al–Mg alloys with high efficiency and superior mechanical performance. The microstructural evolution and mechanical property response of the CREed Al–5Mg alloy with Sc m...
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2025-01-01
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| author | Bowei Yang Wenyue Liu Xin Liu Dalong Yang Minqiang Gao |
| author_facet | Bowei Yang Wenyue Liu Xin Liu Dalong Yang Minqiang Gao |
| author_sort | Bowei Yang |
| collection | DOAJ |
| description | In this work, Al–Mg alloys fabricated by combining continuous rheo-extrusion (CRE) and Sc modification were proposed for producing Al–Mg alloys with high efficiency and superior mechanical performance. The microstructural evolution and mechanical property response of the CREed Al–5Mg alloy with Sc modification were investigated. The grain refinement and strengthening mechanisms induced by nanoscale Al<sub>3</sub>Sc-phase particles in the alloy were discussed. The results showed that an obvious grain refinement effect was achieved in the CREed Al–5Mg alloy as the Sc content increased from 0 to 0.5 wt%, and the average grain size decreased from 52.6 μm to 2.4 μm, respectively. The primary Al<sub>3</sub>Sc-phase particles formed during solidification behaved as heterogeneous nucleation sites for the α-Al matrix, while the nanoscale Al<sub>3</sub>Sc-phase particles achieved during CRE enhanced the driving force of continuous dynamic recrystallization and the Zener drag force. As a result, a superior grain refinement effect was observed. The ultimate tensile strength, yield strength, and hardness of the alloy were enhanced as the Sc content increased from 0 to 0.5 wt%. Grain boundary strengthening, second-phase strengthening, and dislocation strengthening were the main strengthening mechanisms of the CREed Al–Mg–Sc alloys. |
| format | Article |
| id | doaj-art-01ad17a2a0f54d50961f266549eaffce |
| institution | Kabale University |
| issn | 2075-4701 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | MDPI AG |
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| series | Metals |
| spelling | doaj-art-01ad17a2a0f54d50961f266549eaffce2025-01-24T13:41:32ZengMDPI AGMetals2075-47012025-01-011515410.3390/met15010054Microstructure and Tensile Property Tailoring of Al–5Mg (wt%) Alloy Combined with Continuous Rheo-Extrusion and Sc ModificationBowei Yang0Wenyue Liu1Xin Liu2Dalong Yang3Minqiang Gao4State Key Laboratory of Metal Material for Marine Equipment and Application, Anshan 114021, ChinaState Key Laboratory of Metal Material for Marine Equipment and Application, Anshan 114021, ChinaState Key Laboratory of Metal Material for Marine Equipment and Application, Anshan 114021, ChinaEngineering Research Center of Continuous Extrusion, Ministry of Education, Dalian Jiaotong University, Dalian 116028, ChinaEngineering Research Center of Continuous Extrusion, Ministry of Education, Dalian Jiaotong University, Dalian 116028, ChinaIn this work, Al–Mg alloys fabricated by combining continuous rheo-extrusion (CRE) and Sc modification were proposed for producing Al–Mg alloys with high efficiency and superior mechanical performance. The microstructural evolution and mechanical property response of the CREed Al–5Mg alloy with Sc modification were investigated. The grain refinement and strengthening mechanisms induced by nanoscale Al<sub>3</sub>Sc-phase particles in the alloy were discussed. The results showed that an obvious grain refinement effect was achieved in the CREed Al–5Mg alloy as the Sc content increased from 0 to 0.5 wt%, and the average grain size decreased from 52.6 μm to 2.4 μm, respectively. The primary Al<sub>3</sub>Sc-phase particles formed during solidification behaved as heterogeneous nucleation sites for the α-Al matrix, while the nanoscale Al<sub>3</sub>Sc-phase particles achieved during CRE enhanced the driving force of continuous dynamic recrystallization and the Zener drag force. As a result, a superior grain refinement effect was observed. The ultimate tensile strength, yield strength, and hardness of the alloy were enhanced as the Sc content increased from 0 to 0.5 wt%. Grain boundary strengthening, second-phase strengthening, and dislocation strengthening were the main strengthening mechanisms of the CREed Al–Mg–Sc alloys.https://www.mdpi.com/2075-4701/15/1/54Al–Mg alloycontinuous rheo-extrusionSc modificationmicrostructuremechanical property |
| spellingShingle | Bowei Yang Wenyue Liu Xin Liu Dalong Yang Minqiang Gao Microstructure and Tensile Property Tailoring of Al–5Mg (wt%) Alloy Combined with Continuous Rheo-Extrusion and Sc Modification Metals Al–Mg alloy continuous rheo-extrusion Sc modification microstructure mechanical property |
| title | Microstructure and Tensile Property Tailoring of Al–5Mg (wt%) Alloy Combined with Continuous Rheo-Extrusion and Sc Modification |
| title_full | Microstructure and Tensile Property Tailoring of Al–5Mg (wt%) Alloy Combined with Continuous Rheo-Extrusion and Sc Modification |
| title_fullStr | Microstructure and Tensile Property Tailoring of Al–5Mg (wt%) Alloy Combined with Continuous Rheo-Extrusion and Sc Modification |
| title_full_unstemmed | Microstructure and Tensile Property Tailoring of Al–5Mg (wt%) Alloy Combined with Continuous Rheo-Extrusion and Sc Modification |
| title_short | Microstructure and Tensile Property Tailoring of Al–5Mg (wt%) Alloy Combined with Continuous Rheo-Extrusion and Sc Modification |
| title_sort | microstructure and tensile property tailoring of al 5mg wt alloy combined with continuous rheo extrusion and sc modification |
| topic | Al–Mg alloy continuous rheo-extrusion Sc modification microstructure mechanical property |
| url | https://www.mdpi.com/2075-4701/15/1/54 |
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