A5082529441- Intermetallics and Advanced Alloy Properties
- Aluminum Alloys Composites Properties
- MXene and MAX Phase Materials
- Metal and Thin Film Mechanics
- Material Properties and Applications
- Advanced ceramic materials synthesis
- Carbon Nanotubes in Composites
- Additive Manufacturing and 3D Printing Technologies
- Advanced materials and composites
- Advanced Welding Techniques Analysis
- nanoparticles nucleation surface interactions
- Semiconductor materials and interfaces
- Microstructure and mechanical properties
- Nanotechnology research and applications
- Boron and Carbon Nanomaterials Research
- Diamond and Carbon-based Materials Research
- Microstructure and Mechanical Properties of Steels
- Metallurgical and Alloy Processes
- Titanium Alloys Microstructure and Properties
- Graphene research and applications
- Aluminum Alloy Microstructure Properties
- Metal Alloys Wear and Properties
- Electronic Packaging and Soldering Technologies
- Copper Interconnects and Reliability
- High-Temperature Coating Behaviors
Universidade do Porto
2015-2024
Institute of Mechanical Engineering and Industrial Mangement
2018-2024
Laboratório Associado de Energia, Transportes e Aeronáutica
2024
The University of Texas at Austin
2010
Nanocrystalline metals demonstrate a range of fascinating properties, including high levels mechanical strength. However, as these materials are exposed to temperatures, it is critical determine the grain size evolution, this process can drastically change properties. In work, nanocrystalline sputtered Cu thin films with 43 +/- 2 nm were produced by dc-magnetron sputtering. Specimens subsequently annealed in situ transmission electron microscope at 100, 300 and 500 degrees C. Not only was...
Electron backscatter diffraction (EBSD) has been attracting enormous interest in the microstructural characterization of metals recent years. This technique several advantages over conventional ones, since it allows obtaining a wide range possibilities single method, which is not possible others. The grain size, crystallographic orientation, texture, and boundary character distribution can be obtained by EBSD analysis. Despite limited resolution this (20–50 nm), powerful, even for...
The main challenge in the production of metal matrix composites reinforced by carbon nanotubes (CNTs) is development a manufacturing process ensuring dispersion nanoparticles without damaging them, and formation strong bond with metallic to achieve an effective load transfer, so that maximum reinforcement effect CNTs will be accomplished. This research focuses on powder metallurgy aluminum nickel CNTs, using ultrasonication as mixture process. Microstructural characterization nanocomposites...
This work comprehensively investigates the production and characterization of an innovative nanocomposite material aluminum matrix reinforced with Al2O3 nanoparticles. The powder metallurgy route was used to produce nanocomposite, subsequent microstructural mechanical characterizations were conducted evaluate its performance. nanoparticles metal powders dispersed mixed using ultrasonication, followed by cold pressing sintering. results indicated that dispersion isopropanol made it possible...
The development of metal nanocomposites reinforced by carbon nanotubes (CNTs) remains a focus the scientific community due to growing need produce lightweight advanced materials with unique mechanical properties. However, for successful production these nanocomposites, there is consolidate knowledge about how reinforcement influences matrix microstructure and which are strengthening mechanisms promoting best In this context, investigation focuses on study effect an Ni-CNT produced powder...
Dissimilar diffusion bonds of TiAl alloy to AISI 310 stainless steel using Ni/Ti reactive multilayers were studied in this investigation. The Ni and Ti alternating layers deposited by d.c. magnetron sputtering onto the base materials, with a bilayer thickness 30 60 nm. Joining experiments performed at 700 800 °C for min under pressures 50 10 MPa. effectiveness improve bonding process was assessed microstructural characterization interface mechanical tests. Diffusion bonded joints...
Abstract This research focuses on characterization of the impact dispersion methods aluminum-carbon nanotubes (Al-CNTs) nanocomposite structure. Nanocomposites were produced by a conventional powder metallurgy process after CNTs Al powders, using two approaches: (1) and mixture with powders performed in single step ultrasonication; (2) previously untangled ultrasonication then mixed ball milling. Microstructural Al-CNT nanocomposites was optical microscopy, scanning transmission electron...
This study investigates the impact of multi-walled carbon nanotubes (MWCNTs) on microstructure and mechanical properties Al6061 nanocomposites. The MWCNTs were uniformly dispersed in aluminum alloy matrix using ultrasonication following cold pressing sintering a vacuum. effect sintered temperature nanocomposites was evaluated. addition resulted grain refinement, with exhibiting smaller more distributed grains than pure matrix, particularly at lower temperatures 580 600 °C. also demonstrated...
Hybrid nanocomposites have emerged as a groundbreaking class of materials in the aerospace industry, offering exceptional mechanical, thermal, and functional properties. These materials, composed combination metallic matrices reinforced with mixture nanoscale particles, such carbon nanotubes (CNTs), graphene, ceramic nanoparticles (SiC, Al2O3), provide unique balance high strength, low weight, enhanced durability. Recent advances developing these focused on optimizing dispersion integration...
Hybrid nanocomposites have emerged as a groundbreaking class of materials in the aerospace industry, offering exceptional mechanical, thermal, and functional properties. These materials, composed combination metallic matrices (based on aluminum, magnesium, or titanium) reinforced with mixture nanoscale particles, such carbon nanotubes (CNTs), graphene, ceramic nanoparticles (SiC, Al2O3), provide unique balance high strength, low weight, enhanced durability. Recent advances developing these...