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Microstructures and tensile behavior of carbon nanotubes reinforced Cu matrix composites with molecular-level dispersion
Highlights ► Cu–CNT composite powders with molecular-level dispersion were fabricated. ► The Cu–5vol% CNTs composites were successfully hot rolled up to 50% reduction. ► CNTs can remarkably improve the tensile and yield strength of Cu composites. ► The elongation of composites with molecular-level dispersion decreases greatly.
Abstract A new process of molecular-level mixing was used to fabricate successfully the Cu–carbon nanotubes (CNTs) composite powders. The phase composition and microstructures of the composite powders were studied. Cu–CNTs composites with molecular-level dispersion have been fabricated by spark plasma sintering, and then the composites were successfully hot rolled up to 50% reduction. The tensile behavior and fractographs of the composites have been studied, the results indicate that a little amount of CNTs added in the Cu matrix can remarkably improve the tensile strength and yield strength of Cu matrix. With a higher degree of CNTs dispersion, the yield strength and tensile strength of the Cu–CNTs composites can obviously improve, but the special elongation decreases greatly.
Microstructures and tensile behavior of carbon nanotubes reinforced Cu matrix composites with molecular-level dispersion
Highlights ► Cu–CNT composite powders with molecular-level dispersion were fabricated. ► The Cu–5vol% CNTs composites were successfully hot rolled up to 50% reduction. ► CNTs can remarkably improve the tensile and yield strength of Cu composites. ► The elongation of composites with molecular-level dispersion decreases greatly.
Abstract A new process of molecular-level mixing was used to fabricate successfully the Cu–carbon nanotubes (CNTs) composite powders. The phase composition and microstructures of the composite powders were studied. Cu–CNTs composites with molecular-level dispersion have been fabricated by spark plasma sintering, and then the composites were successfully hot rolled up to 50% reduction. The tensile behavior and fractographs of the composites have been studied, the results indicate that a little amount of CNTs added in the Cu matrix can remarkably improve the tensile strength and yield strength of Cu matrix. With a higher degree of CNTs dispersion, the yield strength and tensile strength of the Cu–CNTs composites can obviously improve, but the special elongation decreases greatly.
Microstructures and tensile behavior of carbon nanotubes reinforced Cu matrix composites with molecular-level dispersion
Xue, Z.W. (author) / Wang, L.D. (author) / Zhao, P.T. (author) / Xu, S.C. (author) / Qi, J.L. (author) / Fei, W.D. (author)
2011-08-12
4 pages
Article (Journal)
Electronic Resource
English
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