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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
Corresponding AuthorLiu, Z. Y.(zyliu@imr.ac.cn)
2021
Source PublicationCOMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
ISSN1359-835X
Volume140Pages:10
AbstractBimodal 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.
KeywordMetal-matrix composites (MMCs) Carbon Nanotube Mechanical properties Extrusion
Funding OrganizationKey Research Program of Frontier Sciences, CAS ; National Natural Science Foundation of China ; Youth Innovation Promotion Association CAS ; China Scholarship Council
DOI10.1016/j.compositesa.2020.106198
Indexed BySCI
Language英语
Funding ProjectKey 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 Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Manufacturing ; Materials Science, Composites
WOS IDWOS:000596646800001
PublisherELSEVIER SCI LTD
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/158836
Collection中国科学院金属研究所
Corresponding AuthorLiu, Z. Y.
Affiliation1.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
Recommended Citation
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.
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