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These nanocomposites may be good candidates due to their excellent properties for components in the electrical, electronics, or aerospace industries with highly demanding requirements. The main objectives of this work were to produce and characterize the Cu\/CNT nanocomposites, identify the strengthening mechanisms, and study the deformation behavior of the nanocomposites during cold rolling. The nanocomposites exhibited an improvement in hardness and tensile strength of 17 and 67%, respectively, attesting to the strengthening effect of the reinforced material. The yield strength of the nanocomposites was determined considering different mechanisms: (1) load transfer, (2) grain refinement or texture, (3) dislocation, and (4) Orowan strengthening mechanisms. The microstructural and calculated results show that the mechanism that contributes the most to the increase in the properties of the nanocomposite is the load transfer. The nanocomposites show a different texture evolution of the Cu matrix during cold rolling. This can be due to differences in the active slip planes between the matrix and the nanocomposite, which affects the lattice rotation.<\/jats:p>","DOI":"10.3390\/app13063378","type":"journal-article","created":{"date-parts":[[2023,3,7]],"date-time":"2023-03-07T02:07:38Z","timestamp":1678154858000},"page":"3378","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Production and Characterization of Cu\/CNT Nanocomposites"],"prefix":"10.3390","volume":"13","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4798-556X","authenticated-orcid":false,"given":"\u00cdris","family":"Carneiro","sequence":"first","affiliation":[{"name":"Department of Metallurgical and Materials Engineering (DEMM), University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"},{"name":"Institute of Science and Innovation in Mechanical and Industrial Engineering (LAETA\/INEGI), Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-1221-698X","authenticated-orcid":false,"given":"Beatriz","family":"Monteiro","sequence":"additional","affiliation":[{"name":"Department of Metallurgical and Materials Engineering (DEMM), University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5108-8143","authenticated-orcid":false,"given":"Bernardo","family":"Ribeiro","sequence":"additional","affiliation":[{"name":"Department of Metallurgical and Materials Engineering (DEMM), University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3692-585X","authenticated-orcid":false,"given":"Jos\u00e9 V.","family":"Fernandes","sequence":"additional","affiliation":[{"name":"Centre for Mechanical Engineering, Materials and Processes (CEMMPRE), Department of Mechanical Engineering, University of Coimbra, Rua Lu\u00eds Reis Santos, Pinhal de Marrocos, 3030-788 Coimbra, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4670-4516","authenticated-orcid":false,"given":"S\u00f3nia","family":"Sim\u00f5es","sequence":"additional","affiliation":[{"name":"Department of Metallurgical and Materials Engineering (DEMM), University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"},{"name":"Institute of Science and Innovation in Mechanical and Industrial Engineering (LAETA\/INEGI), Rua Dr. Roberto Frias, 4200-465 Porto, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,3,7]]},"reference":[{"key":"ref_1","unstructured":"Agency, E.E. (2013). Every Breath We Take: Improving Air Quality in Europe, Europe Union."},{"key":"ref_2","doi-asserted-by":"crossref","unstructured":"Malaki, M., Xu, W., Kasar, A.K., Menezes, P.L., Dieringa, H., Varma, R.S., and Gupta, M. (2019). Advanced Metal Matrix Nanocomposites. Metals, 9.","DOI":"10.3390\/met9030330"},{"key":"ref_3","doi-asserted-by":"crossref","first-page":"1152","DOI":"10.1016\/j.matpr.2020.02.006","article-title":"Processing and properties of carbon nanotube reinforced composites: A review","volume":"27","author":"Ravichandran","year":"2020","journal-title":"Mater. Today Proc."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Ya, B., Xu, Y., Meng, L., Zhou, B., Zhao, J., Chen, X., and Zhang, X. (2022). Fabrication of Copper Matrix Composites Reinforced with Carbon Nanotubes Using an Innovational Self-Reduction Molecular-Level-Mixing Method. Materials, 15.","DOI":"10.3390\/ma15186488"},{"key":"ref_5","doi-asserted-by":"crossref","first-page":"035013","DOI":"10.1088\/0960-1317\/18\/3\/035013","article-title":"Mechanical properties of carbon nanotube\u2013copper nanocomposites","volume":"18","author":"Chai","year":"2008","journal-title":"J. Micromech. Microeng."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"46","DOI":"10.1016\/j.msea.2006.02.310","article-title":"Hardness and wear resistance of carbon nanotube reinforced Cu matrix nanocomposites","volume":"449","author":"Kim","year":"2007","journal-title":"Mater. Sci. Eng. A"},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"106063","DOI":"10.1016\/j.compositesa.2020.106063","article-title":"High strength and high ductility copper matrix composite reinforced by graded distribution of carbon nanotubes","volume":"138","author":"Chen","year":"2020","journal-title":"Compos. Part A Appl. Sci. Manuf."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"593","DOI":"10.1016\/j.carbon.2017.08.004","article-title":"Fabrication and densification of high performance carbon nanotube\/copper composite fibers","volume":"123","author":"Han","year":"2017","journal-title":"Carbon"},{"key":"ref_9","doi-asserted-by":"crossref","unstructured":"Carneiro, \u00cd., Viana, F., Vieira, M.F., Valdemar Fernandes, J., and Sim\u00f5es, S. (2020). Characterization of Ni\u2013CNTs Nanocomposites Produced by Ball-Milling. Metals, 10.","DOI":"10.3390\/met10010002"},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"1077","DOI":"10.1016\/j.compscitech.2009.01.026","article-title":"Characteristics of powder metallurgy pure titanium matrix composite reinforced with multi-wall carbon nanotubes","volume":"69","author":"Kondoh","year":"2009","journal-title":"Compos. Sci. Technol."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"992","DOI":"10.1016\/j.compstruct.2013.10.043","article-title":"Improved dispersion of carbon nanotubes in aluminum nanocomposites","volume":"108","author":"Viana","year":"2014","journal-title":"Compos. Struct."},{"key":"ref_12","doi-asserted-by":"crossref","first-page":"045032","DOI":"10.1088\/2051-672X\/ac3a53","article-title":"Process optimization for enhanced tribological properties of Al\/MWCNT composites produced by powder metallurgy using artificial neural networks","volume":"9","author":"Turkoglu","year":"2021","journal-title":"Surf. Topogr."},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"2432","DOI":"10.1016\/j.jmrt.2019.01.026","article-title":"Influence of sintering methods on the mechanical properties of aluminium nanocomposites reinforced with carbonaceous compounds: A review","volume":"8","author":"Awotunde","year":"2019","journal-title":"J. Mater. Res. Technol."},{"key":"ref_14","doi-asserted-by":"crossref","first-page":"927","DOI":"10.1007\/s12540-013-5004-4","article-title":"Grain refinement and tensile strength of carbon nanotube-reinforced Cu matrix nanocomposites processed by high-pressure torsion","volume":"19","author":"Yoon","year":"2013","journal-title":"Met. Mater. Int."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"347","DOI":"10.1016\/j.msea.2015.08.012","article-title":"Study on the strengthening mechanisms of Cu\/CNT nano-composites","volume":"645","author":"Long","year":"2015","journal-title":"Mater. Sci. Eng. A"},{"key":"ref_16","doi-asserted-by":"crossref","first-page":"26258","DOI":"10.1038\/srep26258","article-title":"Synergistic strengthening effect of nanocrystalline copper reinforced with carbon nanotubes","volume":"6","author":"Wang","year":"2016","journal-title":"Sci. Rep."},{"key":"ref_17","doi-asserted-by":"crossref","first-page":"138656","DOI":"10.1016\/j.msea.2019.138656","article-title":"Preparation of CNTs\/Cu composites with good electrical conductivity and excellent mechanical properties","volume":"771","author":"Fu","year":"2020","journal-title":"Mater. Sci. Eng. A"},{"key":"ref_18","doi-asserted-by":"crossref","first-page":"015069","DOI":"10.1088\/2053-1591\/ab69c1","article-title":"Enhanced mechanical properties and wear resistance of cold-rolled carbon nanotubes reinforced copper matrix composites","volume":"7","author":"Duong","year":"2020","journal-title":"Mater. Res. Express"},{"key":"ref_19","doi-asserted-by":"crossref","unstructured":"Carneiro, \u00cd., and Sim\u00f5es, S. (2020). Effect of Morphology and Structure of MWCNTs on Metal Matrix Nanocomposites. Materials, 13.","DOI":"10.3390\/ma13235557"},{"key":"ref_20","doi-asserted-by":"crossref","unstructured":"Carneiro, \u00cd., Viana, F., Vieira, F.M., Fernandes, V.J., and Sim\u00f5es, S. (2019). EBSD Analysis of Metal Matrix Nanocomposite Microstructure Produced by Powder Metallurgy. Nanomaterials, 9.","DOI":"10.3390\/nano9060878"},{"key":"ref_21","doi-asserted-by":"crossref","first-page":"114","DOI":"10.1016\/j.compstruct.2015.02.062","article-title":"Influence of dispersion\/mixture time on mechanical properties of Al\u2013CNTs nanocomposites","volume":"126","author":"Viana","year":"2015","journal-title":"Compos. Struct."},{"key":"ref_22","unstructured":"Beausir, B., and Fundenberger, J.-J. (2023, January 27). Analysis Tools for Electron and X-ray Diffraction, ATEX\u2014Software. Available online: www.atex-software.eu."},{"key":"ref_23","doi-asserted-by":"crossref","first-page":"725","DOI":"10.1017\/S143192761600057X","article-title":"Microstructural Characterization of Aluminum-Carbon Nanotube Nanocomposites Produced Using Different Dispersion Methods","volume":"22","author":"Viana","year":"2016","journal-title":"Microsc. Microanal."},{"key":"ref_24","doi-asserted-by":"crossref","unstructured":"Sim\u00f5es, S., Viana, F., Reis, M.A.L., and Vieira, M.F. (2017). Aluminum and Nickel Matrix Composites Reinforced by CNTs: Dispersion\/Mixture by Ultrasonication. Metals, 7.","DOI":"10.3390\/met7070279"},{"key":"ref_25","first-page":"108646","article-title":"Exploiting the synergic strengthening effects of stacking faults in carbon nanotubes reinforced aluminum matrix composites for enhanced mechanical properties","volume":"211","author":"Guo","year":"2021","journal-title":"Comp. Eng."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"329","DOI":"10.1016\/0022-5096(65)90035-9","article-title":"Tensile Properties of Fiber-Reinforced Metals: Copper\/Tungsten and Copper\/Molybedenumn","volume":"13","author":"Kelly","year":"1965","journal-title":"J. Mech. Phys. Solids"},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"801","DOI":"10.1016\/j.scriptamat.2004.06.002","article-title":"Hall-petch relation and boundary strengthening","volume":"51","author":"Hansen","year":"2004","journal-title":"Scr. Mater."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"43","DOI":"10.1016\/0036-9748(86)90210-3","article-title":"On the strength of discontinuous silicon carbide reinforced aluminum composites","volume":"20","author":"Nardone","year":"1986","journal-title":"Scr. Metall."},{"key":"ref_29","doi-asserted-by":"crossref","unstructured":"Carneiro, \u00cd., Fernandes, J.V., and Sim\u00f5es, S. (2022). Deformation behavior of cold-rolled Ni\/CNT nanocomposites. Appl. Sci., 12.","DOI":"10.3390\/app12199471"}],"container-title":["Applied Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2076-3417\/13\/6\/3378\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,10]],"date-time":"2025-10-10T18:49:34Z","timestamp":1760122174000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2076-3417\/13\/6\/3378"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2023,3,7]]},"references-count":29,"journal-issue":{"issue":"6","published-online":{"date-parts":[[2023,3]]}},"alternative-id":["app13063378"],"URL":"https:\/\/doi.org\/10.3390\/app13063378","relation":{},"ISSN":["2076-3417"],"issn-type":[{"value":"2076-3417","type":"electronic"}],"subject":[],"published":{"date-parts":[[2023,3,7]]}}}