Effect of Particle Size on Mechanical Properties and Fracture Behaviors of Age-Hardening SiC/Al-Zn-Mg-Cu Composites
文献类型：期刊论文
| 作者 | Ma, Guonan1,2; Wang, Dong1; Xiao, Bolv1; Ma, Zongyi1 |
| 刊名 | ACTA METALLURGICA SINICA-ENGLISH LETTERS
 |
| 出版日期 | 2021-06-01 |
| 页码 | 13 |
| 关键词 | Metal matrix composites Mechanical properties Particle size Fracture behaviors Strengthening mechanisms |
| ISSN号 | 1006-7191 |
| DOI | 10.1007/s40195-021-01254-w |
| 通讯作者 | Wang, Dong(dongwang@imr.ac.cn) |
| 英文摘要 | 15 vol.% SiC/Al-6.5Zn-2.8 Mg-1.7Cu (wt%) composites with varying particle sizes (3.5, 7.0, 14 and 20 mu m), i.e., C-3.5, C-7.0, C-14, and C-20, respectively, were fabricated by powder metallurgy (PM) method and subjected to microstructural examination. The effect of particle size on mechanical properties and fracture behaviors of the T6-treated composites was revealed and analyzed in detail. Element distribution and precipitates variations in the composites with varying particle sizes were emphatically considered. Results indicated that both tensile strength and plasticity of the T6-treated composites increased first and then decreased with particle size decreasing. The C-7.0 composite simultaneously exhibited the highest ultimate tensile strength (UTS) of 686 MPa and best elongation (El.) of 3.1%. The smaller-sized SiC particle would introduce more oxide impurities, which would react with the alloying element in the matrix to cause Mg segregation and depletion. According to strengthening mechanism analysis, the weakening of precipitation strengthening in the T6-treated C-3.5 composite was the main cause of the lower tensile strength. Additionally, the larger SiC particle, the more likely to fracture, especially in the composites with high yield strength. For the T6-treated C-20 composites, more than 75% SiC particles were broken up, resulting in the lowest plasticity. As decreasing particle size, the fracture behaviors of the T6-treated composites would change from particle fracture to matrix alloy fracture gradually. |
| 资助项目 | National Key R & D Program of China[2017YFB0703104] ; National Natural Science Foundation of China[51771193] ; National Natural Science Foundation of China[51931009] |
| WOS研究方向 | Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000656829500001 |
| 出版者 | CHINESE ACAD SCIENCES, INST METAL RESEARCH |
| 资助机构 | National Key R & D Program of China ; National Natural Science Foundation of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/160302]  |
| 专题 | 金属研究所_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, 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,Wang, Dong,Xiao, Bolv,et al. Effect of Particle Size on Mechanical Properties and Fracture Behaviors of Age-Hardening SiC/Al-Zn-Mg-Cu Composites[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2021:13. |
| APA | Ma, Guonan,Wang, Dong,Xiao, Bolv,&Ma, Zongyi.(2021).Effect of Particle Size on Mechanical Properties and Fracture Behaviors of Age-Hardening SiC/Al-Zn-Mg-Cu Composites.ACTA METALLURGICA SINICA-ENGLISH LETTERS,13. |
| MLA | Ma, Guonan,et al."Effect of Particle Size on Mechanical Properties and Fracture Behaviors of Age-Hardening SiC/Al-Zn-Mg-Cu Composites".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2021):13. |
入库方式： OAI收割
来源：金属研究所
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