Three-dimensional processing maps and microstructural evolution of a CNT-reinforced Al-Cu-Mg nanocomposite
文献类型：期刊论文
| 作者 | Mokdad, F.; Chen, D. L.; Liu, Z. Y.; Ni, D. R.; Xiao, B. L.; Ma, Z. Y.; Chen, DL (reprint author), Ryerson Univ, Dept Mech & Ind Engn, 350 Victoria St, Toronto, ON M5B 2K3, Canada.; Ma, ZY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China. |
| 刊名 | ELSEVIER SCIENCE SA
 |
| 出版日期 | 2017-08-15 |
| 卷号 | 702页码:425-437 |
| 关键词 | Carbon Nanotube Aluminum Matrix Nanocomposite Efficiency Instability Dynamic Recrystallization |
| ISSN号 | 0921-5093 |
| 英文摘要 | The determination of the optimum processing window of a material at elevated temperatures is essential for metal forming. Such an "ideal" processing window could be characterized by the workability parameters of power dissipation efficiency, Ziegler's instability criteria, and the presence of favorable microstructures. The purpose of the present study is to develop three-dimensional (3D) processing maps of a 2.0 wt% carbon nanotube (CNT) reinforced 2024Al nanocomposite and to manifest continuous changes of power dissipation efficiency and flow instability domains involving key processing parameters of temperature, strain rate, and strain via isothermal compressive tests. The optimal hot working parameters of the 2024A1 base alloy and the 2.0 wt% CNT/2024A1 nanocomposite were identified to be at higher temperatures and lower strain rates, with a moderately smaller processing window for the nanocomposite due to the strengthening effect of CNTs and microstructural complexities. Instability occurred at higher strain rates and lower temperatures for both base alloy and nano composite. In the stable domain dynamic recrystallization was observed to occur, and the fraction of re-crystallized grains increased with increasing deformation temperature, along with the presence of more random textures.; The determination of the optimum processing window of a material at elevated temperatures is essential for metal forming. Such an "ideal" processing window could be characterized by the workability parameters of power dissipation efficiency, Ziegler's instability criteria, and the presence of favorable microstructures. The purpose of the present study is to develop three-dimensional (3D) processing maps of a 2.0 wt% carbon nanotube (CNT) reinforced 2024Al nanocomposite and to manifest continuous changes of power dissipation efficiency and flow instability domains involving key processing parameters of temperature, strain rate, and strain via isothermal compressive tests. The optimal hot working parameters of the 2024A1 base alloy and the 2.0 wt% CNT/2024A1 nanocomposite were identified to be at higher temperatures and lower strain rates, with a moderately smaller processing window for the nanocomposite due to the strengthening effect of CNTs and microstructural complexities. Instability occurred at higher strain rates and lower temperatures for both base alloy and nano composite. In the stable domain dynamic recrystallization was observed to occur, and the fraction of re-crystallized grains increased with increasing deformation temperature, along with the presence of more random textures. |
| 学科主题 | Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| 资助机构 | Natural Sciences and Engineering Research Council of Canada (NSERC); National Key Research and Development Plan [2017YFB0703100]; National Basic Research Program of China [2011CB932603]; CAS/SAFEA; Premier's Research Excellence Award (PREA); NSERC-Discovery Accelerator Supplement (DAS) Award; Canada Foundation for Innovation (CFI); Ryerson Research Chair (RRC) program |
| 公开日期 | 2018-01-10 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/79150]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Chen, DL (reprint author), Ryerson Univ, Dept Mech & Ind Engn, 350 Victoria St, Toronto, ON M5B 2K3, Canada.; Ma, ZY (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Mokdad, F.,Chen, D. L.,Liu, Z. Y.,et al. Three-dimensional processing maps and microstructural evolution of a CNT-reinforced Al-Cu-Mg nanocomposite[J]. ELSEVIER SCIENCE SA,2017,702:425-437. |
| APA | Mokdad, F..,Chen, D. L..,Liu, Z. Y..,Ni, D. R..,Xiao, B. L..,...&Ma, ZY .(2017).Three-dimensional processing maps and microstructural evolution of a CNT-reinforced Al-Cu-Mg nanocomposite.ELSEVIER SCIENCE SA,702,425-437. |
| MLA | Mokdad, F.,et al."Three-dimensional processing maps and microstructural evolution of a CNT-reinforced Al-Cu-Mg nanocomposite".ELSEVIER SCIENCE SA 702(2017):425-437. |
入库方式： OAI收割
来源：金属研究所
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