Cold Worked
Mostrando 1-12 de 20 artigos, teses e dissertações.
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1. On the Global and Localised Corrosion Behaviour of the AA2524-T3 Aluminium Alloy Used as Aircraft Fuselage Skin
The aim of this work was to study the corrosion process of new aluminium alloy AA2524-T3 (Solution Heat Treated and Cold Worked), which is a promising substitute of the base line AA2024-T3 for aircrafts fabrication, by global and localised techniques in sodium chloride medium (0.05 mol L-1 NaCl). The open circuit potential results revealed a stochastic evolu
Mat. Res.. Publicado em: 14/01/2019
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2. Hysteretic Behavior of Twin Boundary Peak Due to Precipitation in Co-Ni-Cr alloy
Anelastic behavior and microstructural changes of a Co-Ni-Cr super-alloy were monitored over the temperature range 250-950ºC, by using several complementary techniques. Two grades of this alloy were used, differing by the presence of small quantity of beryllium (<1.5% at.). Thermoelectric power reveals two distinct precipitation stages. The first precipitat
Mat. Res.. Publicado em: 02/07/2018
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3. Simulation of CP-Ti Recrystallization and Grain Growth by a Cellular Automata Algorithm: Simulated Versus Experimental Results
The application of cellular automata in materials science requires the conversion of the automata's rules and abstract general properties to rules and properties associated with the material and phenomena under study. In this paper we propose a model which uses cellular automata to simulate recrystallization and grain growth during isothermal and non-isother
Mat. Res.. Publicado em: 03/04/2017
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4. First Results of Cavitation Erosion Behavior of Plasma Nitrided Niobium: Surface Modification
This work presents the first results of the plasma nitriding study performed in pure niobium in order to increase its cavitation erosion resistance. Samples were prepared from 98.9% purity and 90% reduction cold-rolled niobium bars. Annealing treatment of the cold-worked niobium samples was carried out in vacuum furnace at 1.33 Pa pressure, in the temperatur
Mat. Res.. Publicado em: 03/11/2015
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5. Recrystallization of a Ti-45Ni-5Cu cold-worked shape memory alloy characterized by thermoelectric power and electrical properties
The recrystallization of a cold-worked shape memory alloy (SMA) without R-phase transition, i.e. the Ti-45.0Ni-5.0Cu (% at.), has been studied by thermoelectric power (TEP) technique and electrical resistivity change (Dρ) on several heat treated samples after cold working. This study was also supported by differential scanning calorimetry (DSC), transmissio
Mat. Res.. Publicado em: 01/08/2014
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6. Passagens / Passagens
Passages refers to transition, displacement, change, transmission and continuity. Perception of the body as a whole in the action of making; the movement and its resonances in connection with breathing and how this is transmitted in modeling the pieces. If passages here means relating differences, something that occurs somewhere between the being and the mat
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/05/2011
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7. Análise estrutural das colunas de sustentação de um silo metálico
Silos metálicos para armazenagem de diferentes tipos de produto são muito empregados no Brasil, isso faz com que compreender melhor o funcionamento deste tipo de sistemas estrutural possa levar a soluções mais inteligentes e econômicas. Com esse intuito no presente trabalho estudam-se as colunas de sustentação de um tipo de silo metálico para armazen
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2011
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8. Fosforitos do Grupo Bambuí na região de Campos Belos (GO)/ Arraias (TO), na borda oeste do Cráton São Francisco
Sao Bento, Coite 1 and Coite 2 are the three sedimentary phosphate deposits known to date in the Campos Belos (GO) and Arraias (TO) region. They are 3 low volume but high grade deposits, with more than 24% P2O5. The phosphorites and siltites found in that region occur at the bottom of the Sete Lagoas Formation, as part of the Neoproterozoic Bambui Group. The
Publicado em: 2009
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9. Guerra das Malvinas: o impacto geopolítico do conflito no relacionamento entre a Armada da República Argentina (ARA) e a Marinha do Brasil (MB) / Malvinas war: the geopolitic influence of the conflict in the ARA and MB relationship
There are analyzede, by means of traditional and new concepts of geopolitics, the special circumstances that surrounded the relations between Argentina and the main developed countries, the United States and part of Europe, during the Malvinas War, in order to, based on such conceptual tool, exam, how such episode impacted the Brazil-Argentina relations on S
Publicado em: 2008
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10. Estudo dos fenômenos que ocorrem durante o recozimento dos aços inoxidáveis austeníticos 304L e 316L deformados em várias temperaturas. / Study of the phenomena that occur during the annealing of worked AISI 304L and 316L austenitic stainless steels deformed at various temperatures.
Hot rolled AISI 304L and 316L austenitic stainless steel sheets, 6mm thick, presented recrystallized equiaxial grains with austenite and islands of delta ferrite, in larger quantities mainly in the center of both steel sheets. The austenite had a weak texture, with a gradient through the thickness. The solution annealing eliminated delta ferrite, however it
Publicado em: 2006
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11. Sistema de gestão ambiental e selos ambientais, de qualidade e segurança alimentar em frutas :estudo de caso: setor macieiro
Due to the increasing exigencies of the consumption market, mainly the extern one, the fruit production industries have the necessity to obtain environmental labels certification, of quality and insurance of the product or of the production system, seeking to enlarge their competitivity to maintain themselves on the market and to conquer other more demanding
Publicado em: 2005
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12. Avaliação dos efeitos do laser de Er,Cr:YSGG sobre superfícies radiculares expostas no tratamento da hipersensibilidade dentinária cervical. Estudo in vitro e in vivo / Desensitizing effects of Er:YAG and Er,Cr:YSGG lasers on dentin hypersensitivity. An in vitro and in vivo study
The aim of the present study was to determine the correct parameters of the Er,Cr:YSGG laser in the treatment of cervical dentin hypersensitivity. This work was presented in 3 different stages. In the first one, it was evaluated the decrease in dentin permeability of dentinal tubules after Er,Cr:YSGG laser irradiation in radicular surfaces. Ninety premolars
Publicado em: 2005