| Aging Behaviors and Mechanical Properties of SiC/Al-Zn-Mg-Cu Composites | |
| Ma Guonan1,2; Zhu Shize1,2; Wang Dong1; Xiao Bolv1; Ma Zongyi1 | |
| 通讯作者 | Wang Dong(dongwang@imr.ac.cn) |
| 2023-12-11 | |
| 发表期刊 | ACTA METALLURGICA SINICA
 |
| ISSN | 0412-1961 |
| 卷号 | 59期号:12页码:1655-1664 |
| 摘要 | Particulate reinforced aluminum matrix composites are widely used in various industrial fields owing to their high specific strength and modulus, low coefficient of thermal expansion, etc. In general, because stronger matrix alloys tend to produce stronger composites, composites with high-strength Al-Zn-Mg-Cu alloys as the matrix are paid considerable attention. However, the aging behavior of the SiC/Al-Zn-Mg-Cu composites has not been well understood. In the present work, SiC particles with a volume fraction of 15% reinforced Al-7.5Zn-2.8Mg-1.7Cu (mass fraction, %) composite and corresponding unreinforced alloy were fabricated using the powder metallurgy technique. The effects of the aging time on the hardness, electrical conductivity, and mechanical properties of the composite and corresponding matrix alloy were investigated. The T6 heat treatment process suitable for the composite was proposed. The nanoscale precipitates under different aging conditions were quantitatively analyzed using TEM and HRTEM. The results indicated that the SiC particles exhibited an obvious promoting effect on the aging process of the SiC/Al-Zn-Mg-Cu composite. The composite reached the corresponding maximum hardness 14 h earlier than the unreinforced alloy. The maximum hardness (238 HV) of the composite was 29 HV higher than that of the unreinforced alloy. The width of the precipitation-free zone of the composite was similar to that of the unreinforced alloy, but the number of the grain boundary phases in the composite increased. The formation of the grain boundary phases and interfacial reaction products could consume alloying elements and reduce the density of precipitated phases in the composite. Based on HRTEM, SiC particles did not change the aging precipitation sequence (SSS-GP zone-eta'-eta) of the Al-Zn-Mg-Cu alloy, and the ' phase was the major strengthening phase of the T6-treated SiC/Al-Zn-Mg-Cu composites. |
| 关键词 | powder metallurgy metal matrix composite aging behavior precipitated phase mechanical property |
| 资助者 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Liaoning Revitalization Talents Program |
| DOI | 10.11900/0412.1961.2021.00473 |
| 收录类别 | SCI |
| 语种 | 英语 |
| 资助项目 | National Key Research and Development Program of China[2017YFB0703104] ; National Natural Science Foundation of China[51771193] ; Liaoning Revitalization Talents Program |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| WOS类目 | Metallurgy & Metallurgical Engineering |
| WOS记录号 | WOS:001153597600011 |
| 出版者 | SCIENCE PRESS |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/184180 |
| 专题 | 中国科学院金属研究所 |
| 通讯作者 | Wang Dong |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Ma Guonan,Zhu Shize,Wang Dong,et al. Aging Behaviors and Mechanical Properties of SiC/Al-Zn-Mg-Cu Composites[J]. ACTA METALLURGICA SINICA,2023,59(12):1655-1664. |
| APA | Ma Guonan,Zhu Shize,Wang Dong,Xiao Bolv,&Ma Zongyi.(2023).Aging Behaviors and Mechanical Properties of SiC/Al-Zn-Mg-Cu Composites.ACTA METALLURGICA SINICA,59(12),1655-1664. |
| MLA | Ma Guonan,et al."Aging Behaviors and Mechanical Properties of SiC/Al-Zn-Mg-Cu Composites".ACTA METALLURGICA SINICA 59.12(2023):1655-1664. |
| 条目包含的文件 | 条目无相关文件。 | |||||
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