Revealing the Influence of SiC Particle Size on the Hot Workability of SiCp/6013 Aluminum Matrix Composites
SiC particle (SiCp) size has been found to significantly influence the hot workability of particle-reinforced aluminum matrix composites (AMC). In this work, therefore, three types of SiCp/6013 composites with different SiCp sizes (0.7, 5 and 15 μm) were prepared and then subjected to isothermal hot...
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MDPI AG
2023-09-01
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| author | Shuang Chen Changlong Wu Guowei Bo Haiyang Liu Jie Tang Dingfa Fu Jie Teng Fulin Jiang |
| author_facet | Shuang Chen Changlong Wu Guowei Bo Haiyang Liu Jie Tang Dingfa Fu Jie Teng Fulin Jiang |
| author_sort | Shuang Chen |
| collection | DOAJ |
| description | SiC particle (SiCp) size has been found to significantly influence the hot workability of particle-reinforced aluminum matrix composites (AMC). In this work, therefore, three types of SiCp/6013 composites with different SiCp sizes (0.7, 5 and 15 μm) were prepared and then subjected to isothermal hot compression tests. In addition, constitutive analysis, processing maps and microstructural characterizations were used to reveal the influence of SiCp size on the hot workability of SiCp/6013 composite. The results showed that the values of hot deformation activation energy Q increased with decreasing SiCp size. Specifically, at lower temperatures (e.g., 350 and 400 °C), the highest peak stress was shown in the AMC with SiCp size of 0.7 μm (AMC-0.7), while in the AMC with SiCp size of 5 μm (AMC-5) at higher temperatures (e.g., 450 and 500 °C). This is because a finer SiCp size would lead to stronger dislocation pinning and grain refinement strengthening effects, and such effects would be weakened at higher temperatures. Further, dynamic softening mechanisms were found to transform from dynamic recovery to dynamic recrystallization with increasing SiCp size, and the dynamic recrystallization occurred more easily at higher temperatures and lower strain rates. Consequently, the instability zones of the composites are all mainly located in the deformation region with lower temperature and higher strain rate, and smaller SiCp results in larger instability zones. |
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| issn | 1996-1944 |
| language | English |
| last_indexed | 2024-03-10T22:31:01Z |
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| spelling | doaj.art-5c4d1e2171ee420c94da93abafea7a712023-11-19T11:45:36ZengMDPI AGMaterials1996-19442023-09-011618629210.3390/ma16186292Revealing the Influence of SiC Particle Size on the Hot Workability of SiCp/6013 Aluminum Matrix CompositesShuang Chen0Changlong Wu1Guowei Bo2Haiyang Liu3Jie Tang4Dingfa Fu5Jie Teng6Fulin Jiang7Hunan Provincial Key Laboratory of Vehicle Power and Transmission System, Hunan Institute of Engineering, Xiangtan 411104, ChinaCollege of Materials Science and Engineering, Hunan University, Changsha 410082, ChinaCollege of Energy and Power Engineering, Changsha University of Science & Technology, Changsha 410114, ChinaHunan Province Engineering Research Center for the Preparation and Application of High Performance Aluminum Matrix Composites, Xiangxi 416100, ChinaCollege of Materials Science and Engineering, Hunan University, Changsha 410082, ChinaCollege of Materials Science and Engineering, Hunan University, Changsha 410082, ChinaCollege of Materials Science and Engineering, Hunan University, Changsha 410082, ChinaCollege of Materials Science and Engineering, Hunan University, Changsha 410082, ChinaSiC particle (SiCp) size has been found to significantly influence the hot workability of particle-reinforced aluminum matrix composites (AMC). In this work, therefore, three types of SiCp/6013 composites with different SiCp sizes (0.7, 5 and 15 μm) were prepared and then subjected to isothermal hot compression tests. In addition, constitutive analysis, processing maps and microstructural characterizations were used to reveal the influence of SiCp size on the hot workability of SiCp/6013 composite. The results showed that the values of hot deformation activation energy Q increased with decreasing SiCp size. Specifically, at lower temperatures (e.g., 350 and 400 °C), the highest peak stress was shown in the AMC with SiCp size of 0.7 μm (AMC-0.7), while in the AMC with SiCp size of 5 μm (AMC-5) at higher temperatures (e.g., 450 and 500 °C). This is because a finer SiCp size would lead to stronger dislocation pinning and grain refinement strengthening effects, and such effects would be weakened at higher temperatures. Further, dynamic softening mechanisms were found to transform from dynamic recovery to dynamic recrystallization with increasing SiCp size, and the dynamic recrystallization occurred more easily at higher temperatures and lower strain rates. Consequently, the instability zones of the composites are all mainly located in the deformation region with lower temperature and higher strain rate, and smaller SiCp results in larger instability zones.https://www.mdpi.com/1996-1944/16/18/6292aluminum matrix compositesSiC particle sizehot workabilityprocessing mapdynamic softening |
| spellingShingle | Shuang Chen Changlong Wu Guowei Bo Haiyang Liu Jie Tang Dingfa Fu Jie Teng Fulin Jiang Revealing the Influence of SiC Particle Size on the Hot Workability of SiCp/6013 Aluminum Matrix Composites Materials aluminum matrix composites SiC particle size hot workability processing map dynamic softening |
| title | Revealing the Influence of SiC Particle Size on the Hot Workability of SiCp/6013 Aluminum Matrix Composites |
| title_full | Revealing the Influence of SiC Particle Size on the Hot Workability of SiCp/6013 Aluminum Matrix Composites |
| title_fullStr | Revealing the Influence of SiC Particle Size on the Hot Workability of SiCp/6013 Aluminum Matrix Composites |
| title_full_unstemmed | Revealing the Influence of SiC Particle Size on the Hot Workability of SiCp/6013 Aluminum Matrix Composites |
| title_short | Revealing the Influence of SiC Particle Size on the Hot Workability of SiCp/6013 Aluminum Matrix Composites |
| title_sort | revealing the influence of sic particle size on the hot workability of sicp 6013 aluminum matrix composites |
| topic | aluminum matrix composites SiC particle size hot workability processing map dynamic softening |
| url | https://www.mdpi.com/1996-1944/16/18/6292 |
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