Enhancing strength and ductility synergy through heterogeneous structure design in nanoscale Al2O3 particulate reinforced Al composites

doi:10.1016/j.matdes.2019.107629

CORC > 金属研究所 > 中国科学院金属研究所

	Enhancing strength and ductility synergy through heterogeneous structure design in nanoscale Al2O3 particulate reinforced Al composites
	Zan, Y. N.1,2; Zhou, Y. T.2; Liu, Z. Y.2; Ma, G. N.1,2; Wang, D.2; Wang, Q. Z.2; Wang, W. G.2; Xiao, B. L.2; Ma, Z. Y.2
刊名	MATERIALS & DESIGN
	2019-03-15
卷号	166 页码:8
关键词	Metal matrix composites Nanoparticles High energy ball milling Ultrafine grain Ductility
ISSN号	0264-1275
DOI	10.1016/j.matdes.2019.107629
通讯作者	Wang, Q. Z.(qzhwang@imr.ac.cn) ; Xiao, B. L.(blxiao@imr.ac.cn)
英文摘要	Nanoparticle reinforced aluminum matrix composites fabricated by a high energy ball milling method showed significantly improved strength, however, their ductility was relative lower. This study proposed for the first time a heterogeneous structure strategy toward good strength and ductility synergy for Al matrix composites. Nanoscale Al2O3 particulate reinforced pure Al composites were fabricated as model materials. Three ball milling procedures were conducted to construct uniform ultrafine grain, random bi-modal grain, and heterogeneous lamella grain structures. It was shown that all composites exhibited significantly improved tensile strength. The heterogeneous lamella structure provided the composites with increased tensile strength and ductility compared to the uniform or the random bi-modal grain structure. Compared to ball milled pure Al, the heterogeneous structure composite had 160% and 121% increases in yield stress and ultimate tensile stress, respectively. Meanwhile, its elongation was as high as 8%. The results were rationalized through back stress theory. Geometrically necessary dislocations were believed to be the main reason for the good ductility without strength sacrifice. (C) 2019 The Authors. Published by Elsevier Ltd.
资助项目	National Key R & D Program of China[2017YFB0703104] ; National Natural Science Foundation of China[51771194] ; National Natural Science Foundation of China[U1508216] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences
WOS研究方向	Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000458260700020
资助机构	National Key R & D Program of China ; National Natural Science Foundation of China ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/131505]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Q. Z.; Xiao, B. L.
作者单位	1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Zan, Y. N.,Zhou, Y. T.,Liu, Z. Y.,et al. Enhancing strength and ductility synergy through heterogeneous structure design in nanoscale Al2O3 particulate reinforced Al composites[J]. MATERIALS & DESIGN,2019,166:8.
APA	Zan, Y. N..,Zhou, Y. T..,Liu, Z. Y..,Ma, G. N..,Wang, D..,...&Ma, Z. Y..(2019).Enhancing strength and ductility synergy through heterogeneous structure design in nanoscale Al2O3 particulate reinforced Al composites.MATERIALS & DESIGN,166,8.
MLA	Zan, Y. N.,et al."Enhancing strength and ductility synergy through heterogeneous structure design in nanoscale Al2O3 particulate reinforced Al composites".MATERIALS & DESIGN 166(2019):8.