Composites of Aluminum Alloy 7075 with Silver Nanoparticles Prepared by Mechanical Milling

Content Provider	Semantic Scholar
Author	Flores-Campos, R. Deaquino-Lara, R. Ponce, Adrian Estrada-Guel, Ivanovich Miki, M. Yoshida Herrera-Ramírez, J. Martin Martínez-Sánchez, Roberto
Copyright Year	2014
Abstract	Aluminum alloy nanocomposites have been emerged due to their high mechanical properties and low densities, one of the routes of production is the mechanical milling due to its relatively easy way of processes it. During mechanical milling the different powder of the matrix are collisioning by milling media and are deforming, welding and fracturing repeatedly, during the process, the nanoparticles are tramped within the matrix powder. Conforms the powder is milled, its morphology change to an equiaxial form and the particle size is reduced conform the milling time increase. The nanoparticles within the matrix acts like second phase particles finely and homogeneously dispersed, which promote the reinforcement of the alloy breaking the dislocation motion. Nanocomposites base aluminum were prepared introducing carbon coated silver nanoparticles (Ag-C NP) into the matrix of the Al 7075 alloy (Al7075) by mechanical milling process in a high energy SPEX mill, the milling time was set at 5 and 10 h, hardened stell vials and balls were used as a milling media, the milling ball to powder ratio was set at 4:1, and methanol was added as a PCA. Silver nanoparticles modify the powder particle size as well as crystallite size acting as PCA, these avoid the dissolution of the MgZn2 compound and increases the Vickers Hardness Number. It has been found that exist a saturation point where microhardness values stars to decay. The present work is focused in the improvement of the Al 7075 alloy introducing second phase particles with nanometer size into the aluminum matrix, by a solid state method like mechanical milling (MM). Microstructural and mechanical properties are discussed. Palabras clave: Nanocomposites, Mechanical milling, Aluminum 7075. Composites of Aluminum 7075 Alloy with Silver Nanoparticles Prepared by Mechanical Milling R. Flores-Campos, R. Deaquino-Lara, A. Ponce, I. Estrada-Guel, M. MikiYoshida, J.M. Herrera-Ramírez, R. Martínez-Sánchez * Centro de Investigación en Materiales Avanzados (CIMAV), Laboratorio Nacional de Nanotecnología, Miguel de Cervantes 120, CP 31109, Chihuahua, Chih., México. 2 Departamento de Ingeniería. Tecnológico de Monterrey Campus Saltillo, Prol. Juan de la Barrera 1241 Ote., Col. Cumbres, CP 25270, Saltillo, Coahuila, México. Centro de Investigación y de Estudios Avanzados Unidad Saltillo, Carretera SaltilloMonterrey Km 13, Col. Molinos del Rey, CP 25900, Ramos Arizpe, Coahuila, México. 4 Centro de Investigación en Química Aplicada, Blvd. Enrique Reyna Hermosillo 140, CP 25253, Saltillo, Coahuila, México. ruben.flores@itesm.mx, rogelio.deaquino@cinvestav.edu.mx, aponce@ciqa.mx, ivanovich.estrada@cimav.edu.mx, mario.miki@cimav.edu.mx, f martin.herrera@cimav.edu.mx, g roberto.martinez@cimav.edu.mx
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Alternate Webpage(s)	https://cimav.repositorioinstitucional.mx/jspui/bitstream/1004/1212/1/Composites%20of%20Aluminum%20Alloy%207075%20with%20Silver.pdf
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article