Hot deformation and activation energy of a CNT-reinforced aluminum matrix nanocomposite

IMR OpenIR

	Hot deformation and activation energy of a CNT-reinforced aluminum matrix 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, Peoples R China.
	2017-05-17
发表期刊	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN	0921-5093
卷号	695 页码:322-331
摘要	Hot deformation behavior of a 2.0 wt% CNT/2024Al nanocomposite was studied via high-temperature compression over a temperature and strain rate range of 200-400 degrees C and 0.001-0.1 s(-1), respectively. Both flow stress and Zener-Hollomon parameter increased with decreasing deformation temperature and increasing strain rate. The addition of CNTs led to a significant increase of activation energy of plastic deformation, corroborating the enhanced resistance of the nanocomposite to hot deformation. This was also reflected by the increased compressive yield strength in the nanocomposite due to both Hall-fetch strengthening and effective load transfer of CNTs dispersed in the matrix with well-bonded interfaces. Detailed microstructural examinations at a high strain rate, within the upper and lower temperature limits, revealed the occurrence of second-phase particle shearing, refinement, re-precipitation, and re-orientation. The highly beneficial role of the CNT reinforcement in improving the high-temperature performance of Al alloys was discussed.; Hot deformation behavior of a 2.0 wt% CNT/2024Al nanocomposite was studied via high-temperature compression over a temperature and strain rate range of 200-400 degrees C and 0.001-0.1 s(-1), respectively. Both flow stress and Zener-Hollomon parameter increased with decreasing deformation temperature and increasing strain rate. The addition of CNTs led to a significant increase of activation energy of plastic deformation, corroborating the enhanced resistance of the nanocomposite to hot deformation. This was also reflected by the increased compressive yield strength in the nanocomposite due to both Hall-fetch strengthening and effective load transfer of CNTs dispersed in the matrix with well-bonded interfaces. Detailed microstructural examinations at a high strain rate, within the upper and lower temperature limits, revealed the occurrence of second-phase particle shearing, refinement, re-precipitation, and re-orientation. The highly beneficial role of the CNT reinforcement in improving the high-temperature performance of Al alloys was discussed.
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, peoples r china
关键词	Hot Deformation Metal Matrix Nanocomposite Carbon Nanotube Activation Energy
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 Basic Research Program of China [2011CB932603, 2012CB619600]; CAS/SAFEA International Partnership Program for Creative Research Teams; 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
WOS记录号	WOS:000402354500037
引用统计	被引频次：40[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/78132
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, Peoples R China.
推荐引用方式 GB/T 7714	Mokdad, F.,Chen, D. L.,Liu, Z. Y.,et al. Hot deformation and activation energy of a CNT-reinforced aluminum matrix nanocomposite[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2017,695:322-331.
APA	Mokdad, F..,Chen, D. L..,Liu, Z. Y..,Ni, D. R..,Xiao, B. L..,...&Ma, ZY .(2017).Hot deformation and activation energy of a CNT-reinforced aluminum matrix nanocomposite.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,695,322-331.
MLA	Mokdad, F.,et al."Hot deformation and activation energy of a CNT-reinforced aluminum matrix nanocomposite".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 695(2017):322-331.