Preparation and characterization of aeronautic grade aluminum matrix composites reinforced by carbon nanotubes

• Grant number: 12/07831-2
• Support Opportunities: Scholarships abroad - Research
• Effective date (Start): September 03, 2012
• Effective date (End): March 02, 2013
• Field of knowledge: Engineering - Materials and Metallurgical Engineering
• Principal Investigator: Dilermando Nagle Travessa
• Grantee: Dilermando Nagle Travessa
• Host Investigator: Marcela Lieblich Rodriguez
• Host Institution: Instituto de Ciência e Tecnologia (ICT). Universidade Federal de São Paulo (UNIFESP). Campus São José dos Campos. São José dos Campos , SP, Brazil
• Research place: Consejo Superior de Investigaciones Científicas (CSIC), Spain

Abstract

The objective of the present project is to obtain a high strength Metal Matrix Composite (MMC), reinforced by the dispersion of multi walled carbon nanotubes (MWCNTs). Precipitation hardening AA6061 aluminum alloy will be used as the matrix. Prior to the dispersion, the MWCNTs will be functionalized in order to improve their contact to the metallic matrix. 1 to 2% in weight of MWCNTs will be dispersed into the AA6061using the powder metallurgy route, by high energy ball milling of the precursors (AA6061 powder alloy and MWCNTs), followed by compaction and hot extrusion. The obtained extruded bars will be solution heat treated and aged in order to obtain the better combination of precipitation hardening and CNTs dispersion hardening. It is expected to reach a composite which strength is higher than the commercial AA6061 alloy in the T6 temper. In order to have a clear understanding about the CNTs effect, AA6061 bars without CNTs reinforcing will be processed by the same route, in order to establish a base line for comparison. This project will be performed in cooperation with Centro Nacional de Investigaciones Metalurgicas (CENIM - Spain), where the processing and part of composites characterization step will be performed. The CENIM and their researches have large experience in metal matrix composite processing, especially by the powder metallurgy/hot extrusion route. Besides, the CENIM has a proper infrastructure for the composites characterization. (AU)

Scientific publications

(References retrieved automatically from Web of Science and SciELO through information on FAPESP grants and their corresponding numbers as mentioned in the publications by the authors)

TRAVESSA, DILERMANDO N.; DA ROCHA, GEOVANA V. B.; CARDOSO, KATIA R.; LIEBLICH, MARCELA. Carbon Nanotube-Reinforced Aluminum Matrix Composites Produced by High-Energy Ball Milling. Journal of Materials Engineering and Performance, v. 26, n. 6, p. 2998-3006, JUN 2017. (12/07831-2, 13/10570-9)