Synergistic effect of bimodal-sized SiCp and a dynamically precipitated Mg17Al12 phase on microstructure and mechanical properties of SiCp/AZ61 composites during hot extrusion process at different extrusion temperatures
To clarify the synergistic effect of bimodally sized (6 vol% micro-sized and 1 vol% nano-sized) SiC particles and a dynamically precipitated Mg17Al12 phase on the microstructure and mechanical properties of SiCp/AZ61 composites during the hot extrusion process, homogenized bimodally sized SiCp/AZ61...
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Elsevier
2025-05-01
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| Series: | Journal of Materials Research and Technology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785425011342 |
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| author | Ming Li Gang Li Mengling Yao Dijia Zhao Jianxin Zhou Shulin Lü Yajun Yin Xiaoyuan Ji Qiang Chen Hongxia Wang |
| author_facet | Ming Li Gang Li Mengling Yao Dijia Zhao Jianxin Zhou Shulin Lü Yajun Yin Xiaoyuan Ji Qiang Chen Hongxia Wang |
| author_sort | Ming Li |
| collection | DOAJ |
| description | To clarify the synergistic effect of bimodally sized (6 vol% micro-sized and 1 vol% nano-sized) SiC particles and a dynamically precipitated Mg17Al12 phase on the microstructure and mechanical properties of SiCp/AZ61 composites during the hot extrusion process, homogenized bimodally sized SiCp/AZ61 composites were extruded at different temperatures (280, 320, and 360 °C). After extrusion, the distribution of SiCp was transformed from a necklace-like arrangement in the as-cast state to a ribbon-like distribution along the direction of extrusion, which was beneficial for stimulating dynamic recrystallization and precipitation nucleation. The size of the dynamically recrystallized grains and the precipitated Mg17Al12 phase, as well as the texture intensity of the composite, gradually increased with an increase in the extrusion temperature, while the fraction of dynamically precipitated Mg17Al12 exhibited the opposite trend. The composite demonstrated optimal tensile strength at an extrusion temperature of 280 °C, characterized by a yield strength (YS) of 260 MPa, an ultimate tensile strength (UTS) of 320 MPa, and an elongation (EL) of 7.4 %. The high strength of the extruded composite was primarily attributed to the synergistic effects of fine-grained strengthening, Orowan strengthening and thermal mismatch strengthening; among these, fine-grained strengthening, and Orowan strengthening played a predominant role. |
| format | Article |
| id | doaj-art-ca7d1752fa994a4d85456be9ae8df9d1 |
| institution | OA Journals |
| issn | 2238-7854 |
| language | English |
| publishDate | 2025-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj-art-ca7d1752fa994a4d85456be9ae8df9d12025-08-20T02:13:07ZengElsevierJournal of Materials Research and Technology2238-78542025-05-01366695670610.1016/j.jmrt.2025.04.313Synergistic effect of bimodal-sized SiCp and a dynamically precipitated Mg17Al12 phase on microstructure and mechanical properties of SiCp/AZ61 composites during hot extrusion process at different extrusion temperaturesMing Li0Gang Li1Mengling Yao2Dijia Zhao3Jianxin Zhou4Shulin Lü5Yajun Yin6Xiaoyuan Ji7Qiang Chen8Hongxia Wang9State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China; Southwest Technology and Engineering Research Institute, Chongqing, 400039, PR ChinaShanxi Key Laboratory of Advanced Magnesium Based Materials, School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, PR ChinaSouthwest Technology and Engineering Research Institute, Chongqing, 400039, PR ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR China; Corresponding author.State Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR ChinaState Key Laboratory of Materials Processing and Die & Mould Technology, School of Materials Science and Engineering, Huazhong University of Science and Technology, Wuhan, 430074, PR ChinaSouthwest Technology and Engineering Research Institute, Chongqing, 400039, PR ChinaShanxi Key Laboratory of Advanced Magnesium Based Materials, School of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan, 030024, PR China; Corresponding author.To clarify the synergistic effect of bimodally sized (6 vol% micro-sized and 1 vol% nano-sized) SiC particles and a dynamically precipitated Mg17Al12 phase on the microstructure and mechanical properties of SiCp/AZ61 composites during the hot extrusion process, homogenized bimodally sized SiCp/AZ61 composites were extruded at different temperatures (280, 320, and 360 °C). After extrusion, the distribution of SiCp was transformed from a necklace-like arrangement in the as-cast state to a ribbon-like distribution along the direction of extrusion, which was beneficial for stimulating dynamic recrystallization and precipitation nucleation. The size of the dynamically recrystallized grains and the precipitated Mg17Al12 phase, as well as the texture intensity of the composite, gradually increased with an increase in the extrusion temperature, while the fraction of dynamically precipitated Mg17Al12 exhibited the opposite trend. The composite demonstrated optimal tensile strength at an extrusion temperature of 280 °C, characterized by a yield strength (YS) of 260 MPa, an ultimate tensile strength (UTS) of 320 MPa, and an elongation (EL) of 7.4 %. The high strength of the extruded composite was primarily attributed to the synergistic effects of fine-grained strengthening, Orowan strengthening and thermal mismatch strengthening; among these, fine-grained strengthening, and Orowan strengthening played a predominant role.http://www.sciencedirect.com/science/article/pii/S2238785425011342SiCp/AZ61 compositeBimodally sized reinforcing particlesDynamically precipitated phasesTexture intensityExtrusionStrengthening mechanism |
| spellingShingle | Ming Li Gang Li Mengling Yao Dijia Zhao Jianxin Zhou Shulin Lü Yajun Yin Xiaoyuan Ji Qiang Chen Hongxia Wang Synergistic effect of bimodal-sized SiCp and a dynamically precipitated Mg17Al12 phase on microstructure and mechanical properties of SiCp/AZ61 composites during hot extrusion process at different extrusion temperatures Journal of Materials Research and Technology SiCp/AZ61 composite Bimodally sized reinforcing particles Dynamically precipitated phases Texture intensity Extrusion Strengthening mechanism |
| title | Synergistic effect of bimodal-sized SiCp and a dynamically precipitated Mg17Al12 phase on microstructure and mechanical properties of SiCp/AZ61 composites during hot extrusion process at different extrusion temperatures |
| title_full | Synergistic effect of bimodal-sized SiCp and a dynamically precipitated Mg17Al12 phase on microstructure and mechanical properties of SiCp/AZ61 composites during hot extrusion process at different extrusion temperatures |
| title_fullStr | Synergistic effect of bimodal-sized SiCp and a dynamically precipitated Mg17Al12 phase on microstructure and mechanical properties of SiCp/AZ61 composites during hot extrusion process at different extrusion temperatures |
| title_full_unstemmed | Synergistic effect of bimodal-sized SiCp and a dynamically precipitated Mg17Al12 phase on microstructure and mechanical properties of SiCp/AZ61 composites during hot extrusion process at different extrusion temperatures |
| title_short | Synergistic effect of bimodal-sized SiCp and a dynamically precipitated Mg17Al12 phase on microstructure and mechanical properties of SiCp/AZ61 composites during hot extrusion process at different extrusion temperatures |
| title_sort | synergistic effect of bimodal sized sicp and a dynamically precipitated mg17al12 phase on microstructure and mechanical properties of sicp az61 composites during hot extrusion process at different extrusion temperatures |
| topic | SiCp/AZ61 composite Bimodally sized reinforcing particles Dynamically precipitated phases Texture intensity Extrusion Strengthening mechanism |
| url | http://www.sciencedirect.com/science/article/pii/S2238785425011342 |
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