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Three-dimensional processing maps and microstructural evolution of a CNT-reinforced Al-Cu-Mg nanocomposite
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.
2017-08-15
发表期刊ELSEVIER SCIENCE SA
ISSN0921-5093
卷号702页码:425-437
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.
部门归属[mokdad, f. ; chen, d. l.] ryerson univ, dept mech & ind engn, 350 victoria st, toronto, on m5b 2k3, canada ; [liu, z. y. ; ni, d. r. ; xiao, b. l. ; ma, z. y.] chinese acad sci, shenyang natl lab mat sci, inst met res, 72 wenhua rd, shenyang 110016, liaoning, peoples r china
关键词Carbon Nanotube Aluminum Matrix Nanocomposite Efficiency Instability Dynamic Recrystallization
学科领域Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
资助者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
收录类别SCI
语种英语
文献类型期刊论文
条目标识符http://ir.imr.ac.cn/handle/321006/79150
专题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.
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