A5019233506- Microstructure and Mechanical Properties of Steels
- Marine and coastal ecosystems
- Aluminum Alloy Microstructure Properties
- Microbial Community Ecology and Physiology
- Metallurgy and Material Forming
- High-Temperature Coating Behaviors
- Acoustic Wave Resonator Technologies
- High Temperature Alloys and Creep
- Coastal and Marine Management
- Reconstructive Facial Surgery Techniques
- Corneal Surgery and Treatments
- Advanced Sensor and Energy Harvesting Materials
- Innovative Energy Harvesting Technologies
- Bacteriophages and microbial interactions
- Advanced Sensor Technologies Research
- Marine Biology and Ecology Research
- Microstructure and mechanical properties
- Advanced Welding Techniques Analysis
- Additive Manufacturing Materials and Processes
- Gas Sensing Nanomaterials and Sensors
- Marine and fisheries research
- Minerals Flotation and Separation Techniques
- Corrosion Behavior and Inhibition
- Aquaculture disease management and microbiota
- High Entropy Alloys Studies
Universidade Federal do Rio de Janeiro
2009-2024
Ni-based superalloy 718 fabricated via arc plasma direct energy deposition (IN718 AP-DED) exhibit a limited response to heat treatment due its coarse primary microstructure and interdendritic segregation, which may prevent use in high-integrity applications. Thus, dedicated treatments for IN718 AP-DED must possess homogenization temperature as high possible significantly dissolve the eutectics increase γ′′-former elements solid-solution. The present work proposed (homogenization – 1050,...
Abstract In the field of structural engineering, integration smart materials and health monitoring (SHM) has given rise to self-sensing (SSM), leading a paradigm shift in SHM. This paper focuses on interplay between capabilities piezoelectric properties lead zirconate titanate (PZT) barium (BT) aluminium components. Leveraging Friction Stir Processing (FSP), study explores synthesis performance SSMs with embedded particles, potentially transforming engineering. The highlights FSP as key...
This work correlates time series of biological and physical variables to the marine viruses across trophic gradients within Arraial do Cabo upwelling system, Southeast Brazil. The objective is investigate major controlling factors virioplankton dynamics among different water masses. It was used an in situ ex flow cytometry for accessing plankton community. Viruses were highly correlated bacteria phytoplankton, but although lack direct correlation with physicals, turned out be main...
Abstract Short-period variability in plankton communities is poorly documented, especially for variations occurring specific groups the assemblage because traditional analysis laborious and time-consuming. Moreover, it does not allow high sampling frequency required decision making. To overcome this limitation, we tested submersible CytoSub flow cytometer. This device was anchored at a distance of approximately 10 metres from low tide line depth 1.5 12 hours to monitor site biological...
Abstract Significant advances have been made in material synthesis the last two decades, with a focus on polymers, ceramics, metals, and smart materials. Piezoelectric-based materials generate an electric voltage response to loads, enabling distributed monitoring critical structural parts. Friction stir processing (FSP) is versatile approach that can enhance performance various engineering fields. The primary objective of current research examine sensorial properties heat-treated AA7075-T651...
Over the last decades, alloy 718 usage has expanded and requirements imposed by its industrial applications became more critical. The knowledge about grain boundary character distribution (GBCD) in effect on properties improvement is mostly built based iterative processing through cold rolling steps interspersed with solution annealing. Alloy found industry many different forms geometries, fabricated multiple thermomechanical processes such as wire drawing, rolling, forging or extrusion....
The Nickel-based superalloy 718 is a precipitation-hardened material, especially by the ordered and coherent phases γ” (Ni3Nb) γ″ (Ni3 (Al, Ti)). In addition to these phases, precipitation of carbides δ-phase possible. This material has high strength, creep, corrosion resistance at temperatures up 650ºC. work aimed assess influence Thermomechanical Processing on recrystallization texture its alloy’s mechanical behavior. was submitted four processing routes, composed deformation-heat...
Decision-making in coastal waters management is a complex and interdisciplinary task.Particularly, to find seasonal patterns ecological thresholds, which are not always clear tropical areas.Therefore, the ultimate this activity gain knowledge about biogenic element, biological response, selection of indicators may reveal trophic status system.Under scenario, paper applies Data Mining techniques as an alternative approach order access hidden situ flow cytometry monitoring data.The case...