Superplastic deformation behavior of carbon nanotube reinforced 7055 Al alloy composites

doi:10.1016/j.msea.2020.140263

CORC > 金属研究所 > 中国科学院金属研究所

	Superplastic deformation behavior of carbon nanotube reinforced 7055 Al alloy composites
	Bi, S.1,2; Liu, Z. Y.1; Yu, B. H.1; Wu, L. H.1; Xiao, B. L.1
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2020-10-21
卷号	797 页码:9
关键词	Superplasticity Carbon nanotubes Aluminium matrix composites High strain rate Deformation mechanism
ISSN号	0921-5093
DOI	10.1016/j.msea.2020.140263
通讯作者	Liu, Z. Y.(zyliu@imr.ac.cn)
英文摘要	The superplastic deformation behavior of a carbon nanotube reinforced high-strength aluminium alloy matrix composite (CNT/7055Al) was investigated at temperatures ranging from 300 to 425 degrees C and strain rates ranging from 10(-2) to 5 s(-1). A maximum elongation of 125% was observed for the as-extruded CNT/7055Al at 400 degrees C and a high strain rate of 5 s(-1). After a T6 treatment (solution and artificial aging treatment), the CNT/7055Al achieved a higher elongation of 153% at 400 degrees C and 5 s(-1) due to the fewer second-phase particles. The strain rate sensitivity and activation energy were determined to be 0.2 and 171 kJ/mol, respectively. Combined with microstructural observation, it was demonstrated that the main deformation mechanism for the CNT/7055Al was lattice diffusion controlled dislocation climb. Further, it was found that CNTs played a negative role in the superplastic deformation, which could be attributed to the large aspect ratio of CNTs and strong CNT-Al interface bonding.
资助项目	Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC015] ; National Key R&D Program of China[2017YFB0703104] ; National Key R&D Program of China[040103] ; National Natural Science Foundation of China[51931009] ; National Natural Science Foundation of China[51871215] ; Youth Innovation Promotion Association CAS[2020197]
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:000579487100061
资助机构	Key Research Program of Frontier Sciences, CAS ; National Key R&D Program of China ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/141076]
专题	金属研究所_中国科学院金属研究所
通讯作者	Liu, Z. Y.
作者单位	1.Chinese Acad Sci, Inst Met Res, 72 Wenhua Rd, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Bi, S.,Liu, Z. Y.,Yu, B. H.,et al. Superplastic deformation behavior of carbon nanotube reinforced 7055 Al alloy composites[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2020,797:9.
APA	Bi, S.,Liu, Z. Y.,Yu, B. H.,Wu, L. H.,&Xiao, B. L..(2020).Superplastic deformation behavior of carbon nanotube reinforced 7055 Al alloy composites.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,797,9.
MLA	Bi, S.,et al."Superplastic deformation behavior of carbon nanotube reinforced 7055 Al alloy composites".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 797(2020):9.