Improving ductility of bimodal carbon nanotube/2009Al composites by optimizing coarse grain microstructure via hot extrusion

doi:10.1016/j.compositesa.2020.106198

IMR OpenIR

	Improving ductility of bimodal carbon nanotube/2009Al composites by optimizing coarse grain microstructure via hot extrusion
	Ma, K.1,2; Liu, Z. Y.1; Liu, B. S.3; Xiao, B. L.1; Ma, Z. Y.1
通讯作者	Liu, Z. Y.(zyliu@imr.ac.cn)
	2021
发表期刊	COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
ISSN	1359-835X
卷号	140 页码:10
摘要	Bimodal carbon nanotube reinforced 2009Al (CNT/2009Al) composites were fabricated by powder metallurgy followed with extrusion. It indicated that the width, length and grain size in the coarse grain (CG) bands increased with the increase of the extrusion temperature, while no obvious grain size change was observed in the ultra-fine grain zones. The bimodal composite showed a double yield phenomenon. The first yield strength which resulted from the yielding of the CG, was similar for all composites extruded with different temperatures. The second yield strength decreased, but the ultimate tensile strength retained stable and the elongation increased with increasing the extrusion temperature. The composite extruded at 470 degrees C exhibited a 76% ductility increase with nearly no ultimate tensile strength loss as compared to one extruded at 370 degrees C. The better stress relaxation ability of large-sized grains in the CG bands was believed to be the reason for the good strength-ductility.
关键词	Metal-matrix composites (MMCs) Carbon Nanotube Mechanical properties Extrusion
资助者	Key Research Program of Frontier Sciences, CAS ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; China Scholarship Council
DOI	10.1016/j.compositesa.2020.106198
收录类别	SCI
语种	英语
资助项目	Key Research Program of Frontier Sciences, CAS[QYZDJ-SSW-JSC015] ; National Natural Science Foundation of China[51931009] ; National Natural Science Foundation of China[51871214] ; National Natural Science Foundation of China[51871215] ; Youth Innovation Promotion Association CAS[2020197] ; China Scholarship Council
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Manufacturing ; Materials Science, Composites
WOS记录号	WOS:000596646800001
出版者	ELSEVIER SCI LTD
引用统计	被引频次：47[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/321006/158836
专题	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, Shi Changxu Innovat Ctr Adv Mat, 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 3.AVIC Mfg Technol Inst, Beijing 100024, Peoples R China
推荐引用方式 GB/T 7714	Ma, K.,Liu, Z. Y.,Liu, B. S.,et al. Improving ductility of bimodal carbon nanotube/2009Al composites by optimizing coarse grain microstructure via hot extrusion[J]. COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING,2021,140:10.
APA	Ma, K.,Liu, Z. Y.,Liu, B. S.,Xiao, B. L.,&Ma, Z. Y..(2021).Improving ductility of bimodal carbon nanotube/2009Al composites by optimizing coarse grain microstructure via hot extrusion.COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING,140,10.
MLA	Ma, K.,et al."Improving ductility of bimodal carbon nanotube/2009Al composites by optimizing coarse grain microstructure via hot extrusion".COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING 140(2021):10.