Deformation behavior and strengthening mechanisms in a CNT-reinforced bimodal-grained aluminum matrix nanocomposite

doi:10.1016/j.msea.2021.141370

CORC > 金属研究所 > 中国科学院金属研究所

	Deformation behavior and strengthening mechanisms in a CNT-reinforced bimodal-grained aluminum matrix nanocomposite
	Mohammed, S. M. A. K.1; Chen, D. L.1; Liu, Z. Y.2; Ni, D. R.2; Wang, Q. Z.2; Xiao, B. L.2; Ma, Z. Y.2
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2021-06-10
卷号	817 页码:9
关键词	Metal matrix nanocomposites Bimodal grain structure Carbon nanotube Deformation behavior Strengthening mechanisms
ISSN号	0921-5093
DOI	10.1016/j.msea.2021.141370
通讯作者	Chen, D. L.(dchen@ryerson.ca) ; Ma, Z. Y.(zyma@imr.ac.cn)
英文摘要	The aim of this study was to identify deformation behavior and strengthening mechanisms of a carbon nanotube (CNT)-reinforced bimodal-grained Al-Cu-Mg nanocomposite and its base alloy fabricated by two-step ball milling, powder metallurgy and extrusion. A superior strength-ductility synergy stemming from the concurrent presence of ultrafine grains (UFGs) and coarse grains (CGs) was achieved. Singly-dispersed CNTs in UFGs and sound CNT/Al interfacial bond contributed to a significant improvement in the strength of the nanocomposite. The predominant strengthening mechanism in the CNT-reinforced nanocomposite was identified to be Orowan looping due to severe shearing of CNTs into nano-sized fragments during ball milling, along with load-transfer and thermal mismatch-induced dislocation strengthening mechanisms. The predicted yield strength of the nanocomposite was in agreement with the experimental value obtained. The findings in this study help pave the way for developing high-performance lightweight materials with a superior strength-ductility synergy via incorporating CNTs with novel bimodal grain structures.
资助项目	Natural Sciences and Engineering Research Council of Canada (NSERC) ; National Natural Science Foundation of China[51931009] ; National Natural Science Foundation of China[51871214] ; National Natural Science Foundation of China[51871215] ; Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC015] ; National Key R&D Program of China[2017YFB0703104]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000658867700002
资助机构	Natural Sciences and Engineering Research Council of Canada (NSERC) ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, CAS ; National Key R&D Program of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/160394]
专题	金属研究所_中国科学院金属研究所
通讯作者	Chen, D. L.; Ma, Z. Y.
作者单位	1.Ryerson Univ, Dept Mech & Ind Engn, Toronto, ON M5B 2K3, Canada 2.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Mohammed, S. M. A. K.,Chen, D. L.,Liu, Z. Y.,et al. Deformation behavior and strengthening mechanisms in a CNT-reinforced bimodal-grained aluminum matrix nanocomposite[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2021,817:9.
APA	Mohammed, S. M. A. K..,Chen, D. L..,Liu, Z. Y..,Ni, D. R..,Wang, Q. Z..,...&Ma, Z. Y..(2021).Deformation behavior and strengthening mechanisms in a CNT-reinforced bimodal-grained aluminum matrix nanocomposite.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,817,9.
MLA	Mohammed, S. M. A. K.,et al."Deformation behavior and strengthening mechanisms in a CNT-reinforced bimodal-grained aluminum matrix nanocomposite".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 817(2021):9.