المؤلفون: E. Cuadros-Lugo, Caleb Carreño-Gallardo, Ernesto Ledezma-Sillas, Eduardo Uriza-Vega, Jose Martin Herrera-Ramirez, C. López-Meléndez, R. Pérez-Bustamante

المصدر: Materials Research, Volume: 22, Issue: 2, Article number: e20180652, Published: 31 JAN 2019
Materials Research, Vol 22, Iss 2 (2019)
Materials Research v.22 n.2 2019
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL

مصطلحات موضوعية: Nanotube, Materials science, Morphology (linguistics), mechanical milling, Scanning electron microscope, Mechanical Engineering, Alloy, chemistry.chemical_element, engineering.material, mechanical properties, Condensed Matter Physics, metal matrix composites, chemistry, Mechanics of Materials, Aluminium, engineering, TA401-492, General Materials Science, Extrusion, Composite material, Ductility, Dispersion (chemistry), spray pyrolysis, Materials of engineering and construction. Mechanics of materials

الوصف: In this paper, multiwalled carbon nanotubes (MWCNTs) were synthesized by spray pyrolysis to be used later as material reinforcement in the production of MWCNTs/Al7075 aluminum composites. Both, MWCNTs and MWCNTs/Al7075 composites were microstructurally and mechanically characterized. Scanning electron microscopy (SEM) analysis shows MWCNTs formed by multiple layers rolled on themselves forming a tube shape with lengths up to 1300 µm and diameters ranging from 55 to 120 nm. MWCNTs were added to the aluminum matrix in different concentrations up to 3.0 wt%. Their dispersion in the aluminum matrix was carried out by ultrasonic/methanol method followed by high-energy mechanical milling process. The effect of MWCNTs on the morphology and mechanical behavior of composites were evaluated. Results indicate that a homogeneous dispersion of CNTs was obtained as a consequence of the dispersion routes used in the production of composites, observing no damage on their morphology. The mechanical behavior of the composites shows a noticeable improvement for MWCNTs concentrations above 2.0 wt%, with ductility similar to that found in the literature for the Al7075 commercial alloy.

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URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a43545b2e10b11a2fa9d0f43c66f9736
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392019000200224&lng=en&tlng=en

المؤلفون: Ivanovich Estrada-Guel, Roberto Martínez-Sánchez, C.G. Garay-Reyes, H. M. Medrano-Prieto, Caleb Carreño-Gallardo, E.G. Moreno-Resendiz, M. Sagarnaga-Fernandez, J.M. Mendoza-Duarte

المصدر: Materials Letters. 263:127178

مصطلحات موضوعية: Induction heating, Materials science, Mechanical Engineering, Metallurgy, Alloy, Solid-state, chemistry.chemical_element, Sintering, 02 engineering and technology, engineering.material, 010402 general chemistry, 021001 nanoscience & nanotechnology, Condensed Matter Physics, Microstructure, 01 natural sciences, 0104 chemical sciences, chemistry, Mechanics of Materials, Aluminium, engineering, General Materials Science, Lithium, 0210 nano-technology, Porosity

الوصف: Al-Li alloys with different lithium contents were processed by mechanical alloying and sintered by an alternative route based on induction heating to keep the refined microstructure achieved by milling after sintering. The mechanical and microstructural features of samples sintered by a conventional route and fast induction heating were evaluated. Optical and TEM studies showed higher densification and better-refined microstructure retention after sintering using induction heating. Increased values of yield strength and hardness were obtained in the induction sintered alloys due to the porosity reduction complemented with finer microstructure.

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::2172af19665c9532f8c8dd40530dff1d
https://doi.org/10.1016/j.matlet.2019.127178

المؤلفون: Ivanovich Estrada-Guel, Caleb Carreño-Gallardo, Roberto Martínez-Sánchez

المصدر: Materials Science Forum. 793:17-22

مصطلحات موضوعية: Materials science, Mechanical Engineering, Composite number, technology, industry, and agriculture, Compaction, food and beverages, Sintering, Condensed Matter Physics, Microstructure, Characterization (materials science), Matrix (chemical analysis), Mechanics of Materials, General Materials Science, Composite material, Dispersion (chemistry), Intensity (heat transfer)

الوصف: This study deals with the production of some Al-SiO2composites and the evaluation of milling intensity over the distribution of silica particles into the Al matrix. Samples for mechanical characterization were prepared from powders by compaction and sintering using a solid-state route complemented with mechanical milling. The mechanical response was modified as a direct function of the milling intensity, but an adverse effect was observed with prolonged milling times. Electron microscopy studies reveal a homogeneous dispersion of insoluble particles into the Al matrix, which is associated with the high grain refinement in the synthetized composites giving an important improvement on the composites strength. Also, the silica spheroidal structure is not altered nor destroyed (mechanically and/or chemically) during the composite synthesis.

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::6d9ff42db66b5db81a9b1353cf5a2bd9
https://doi.org/10.4028/www.scientific.net/msf.793.17

المؤلفون: Roberto Martínez-Sánchez, José Manuel Mendoza-Duarte, Caleb Carreño-Gallardo, Ivanovich Estrada-Guel, Francisco Robles-Hernandez, C. López-Meléndez

المصدر: Materials Research v.19 suppl.1 2016
Materials research (São Carlos. Online)
Universidade Federal de São Carlos (UFSCAR)
instacron:ABM ABC ABPOL
Materials Research, Vol 19, Iss suppl 1, Pp 13-19 (2016)
Materials Research, Volume: 19 Supplement 1, Pages: 13-19, Published: 04 AUG 2016

مصطلحات موضوعية: Materials science, chemistry.chemical_element, Nanoparticle, 02 engineering and technology, 010402 general chemistry, 01 natural sciences, complex mixtures, composites, Aluminium, Powder metallurgy, General Materials Science, high-energy ball milling, Graphite, Composite material, Ball mill, Materials of engineering and construction. Mechanics of materials, Nanocomposite, Mechanical Engineering, 021001 nanoscience & nanotechnology, Condensed Matter Physics, 0104 chemical sciences, powder metallurgy, chemistry, Mechanics of Materials, TA401-492, 0210 nano-technology, Dispersion (chemistry), Carbon

الوصف: The present work deals with the study of some aluminum (Al) composites reinforced with metallized-graphite (MG) particles prepared by mechanical milling and powder metallurgy routes. Density, morphology evolution and mechanical performance of composites were investigated as a function of MG concentration and milling time. The as-milled powders were characterized by X-ray diffraction and optical/electron microscopy; meanwhile, the mechanical testing was carried out on cylindrical specimens prepared from powders by powder metallurgy. Evidence reveals that high-energy ball milling induce a homogeneous dispersion of graphite nanoparticles in the Al matrix; this is related to an enhancement of hardness and strength response of studied composites. The composite sample with 0.5% MG addition (in weight) reached an increase of 40% on hardness and 50% on strength (compared with pure Al sample); nevertheless an adverse effect was observed with longer milling and/or higher MG concentration.

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URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68a9d54c638f0f9824fd508d599592ec
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392016000700013

المؤلفون: Roberto Martínez-Sánchez, J. I. Barajas-Villaruel, Ivanovich Estrada-Guel, Mario Miki-Yoshida, Caleb Carreño-Gallardo, J. L. Cardoso, J. Martin Herrera-Ramírez

المصدر: Materials Science Forum. 691:37-43

مصطلحات موضوعية: Materials science, Scanning electron microscope, Mechanical Engineering, Condensed Matter Physics, Characterization (materials science), Matrix (chemical analysis), Mechanics of Materials, Powder metallurgy, Particle, General Materials Science, Extrusion, Composite material, Dispersion (chemistry), Tensile testing

الوصف: Al-based composites were fabricated by solid-state route and were characterized by optic and scanning electron microscopy in order to follow their microstructural evolution. Composites were prepared using powder metallurgy techniques in order to obtain samples to carry out mechanical tests on hot extruded and machined samples. Microstructural characterization reveals that, by milling, a homogeneous dispersion of insoluble particles into Al matrix is obtained; this produced an important improvement on hardness and strength compared with the reference. Milling intensity and particle concentration have an important effect on the mechanical properties of composites.

URL الوصول: https://explore.openaire.eu/search/publication?articleId=doi_________::a2500c3903fbacb57b96a42be8025c56
https://doi.org/10.4028/www.scientific.net/msf.691.37