Reheating
Mostrando 1-12 de 28 artigos, teses e dissertações.
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1. High-Frequency Induction Heating of Al-Si-Cu-Mg aluminum alloy in Thixoforming
Thixoforming is the process of shaping near net shape metal components in a semisolid state. The process consists of preparing feedstock, reheating and shaping. Reheating the billet is the most critical step in thixoforming. Induction heating requires precise temperature control to obtain globular microstructure and prevent process defects, such as insuffici
Mat. Res.. Publicado em: 28/10/2019
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2. Análise comparativa entre a têmpera e partição versus a têmpera e revenimento para o aço SAE 4340
RESUMO Um novo tratamento térmico tem sido pesquisado recentemente, cuja denominação é têmpera e partição (T&P), com o intuito de criar aços com austenita estável em sua microestrutura. Inicialmente, esse tratamento foi realizado em aços de alto silício, não obstante, seu potencial alcança outros diversos materiais como os de baixa liga contendo
Matéria (Rio J.). Publicado em: 16/09/2019
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3. Behaviors of Embrittlement and Softening in Heat Affected Zone of High Strength X90 Pipeline Steels
Abstract The embrittlement and softening behaviors in heat affected zone of X90 pipeline steel were studied, and the influence of weld thermal cycle on microstructure and mechanical properties were discussed by combining the effect of peak temperature on the phase transition point (Ar3). Results show that there are embrittlement and softening zones existed i
Soldag. insp.. Publicado em: 15/08/2019
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4. Effects of Processing Parameters on Microstructure and Mechanical Properties of Powder-Thixoforged SiC p /6061 Al Composite
A novel processing technology for the fabrication of particle reinforced metal matrix composites, powder thixoforming (PTF), was proposed and 6061 Al-based composites reinforced with 10% volume fractions of SiC particles (SiCp) were fabricated. The effects of processing parameters, such as reheating time, mould temperature and reheating temperature, on its m
Mat. Res.. Publicado em: 05/01/2017
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5. Physicochemical Characteristics and Lipid Oxidation of Chicken Inner Fillets Subjected to Different Thermal Processing Types
ABSTRACT The objective of this study was to evaluate the effects of different types of thermal processing on the physiochemical characteristics and lipid oxidation of chicken inner fillets. The study was divided into three assays. In the first assay, 50 chicken inner fillets were divided into five treatments, totaling 10 samples per treatment. Treatments con
Rev. Bras. Cienc. Avic.. Publicado em: 2016-09
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6. Deformation induced precipitation in an industrial Ti microalloyed dual phase steel
Abstract This study evaluated the influence of plastic deformation during hot strip rolling in the size of TiN precipitates in an industrial Ti microalloyed dual phase steel. TiN is usually used for pinning austenitic grain boundaries during recrystallization and its efficiency depends on factors such as size of the precipitates and Ti precipitated fraction.
Rem: Rev. Esc. Minas. Publicado em: 2015-12
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7. Melting and crystallization of poly(3-hydroxybutyrate): effect of heating/cooling rates on phase transformation
Abstract We studied the crystallization and melting phenomena of poly (3- hydroxybutyrate) (PHB), a biodegradable and biocompatible semi-crystalline thermoplastic, obtained from renewable resources. Its high crystallinity motivated several studies on crystallization and melting behavior, and also on ways to increase the amorphous polymer fra
Polímeros. Publicado em: 2015-06
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8. Experimental research on the effect of induction reheating on the microstructure and mechanical properties of hot-rolled low-alloy steel plate
Electric induction reheating is used to control the temperature of hot-rolled steel products. To investigate the effect of this on microstructure and mechanical properties, hot-rolled low-alloy steel plate was cooled, reheated, and then either quenched or normalized. Analysis of the microstructure and mechanical properties showed that this process had a grea
Mat. Res.. Publicado em: 2014-12
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9. Effects of processing parameters on microstructure and ultimate tensile strength of thixoformed AM60B magnesium alloy
The effects of processing parameters, such as the punch speed, reheating duration and reheating temperature, on microstructure and ultimate tensile strength (UTS) of thixoformed AM60B magnesium alloy have been investigated. The results indicate that low punch speed, short reheating duration or low reheating temperature often produces the defect of cold shuts
Materials Research. Publicado em: 17/07/2012
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10. Otimização energética no reaquecimento de tarugos na laminação de fio-máquina
Este trabalho refere-se à otimização energética na produção de fio-máquina, onde os aços estudados foram os de baixo carbono. O trabalho foi desenvolvido com o apoio de uma empresa parceira que cedeu as instalações e acesso às informações necessários ao desenvolvimento da dissertação. O objetivo geral do trabalho foi reduzir o consumo de ener
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012
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11. Studies of the properties of heat treated rolled medium carbon steel
Investigations were carried out to study critically the effects of heat treatment on the properties of rolled medium carbon steel. Representative samples of as-rolled medium carbon steel were subjected to heat treatment processes which are; Quenching, Lamellae Formation and Tempering in the following order (Q + Q + L + T), (Q + L + T) and (L + T). The steel
Materials Research. Publicado em: 03/06/2011
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12. Effect of thermo-mechanical parameters on microstructure and mechanical properties of microalloyed steels
In this work the effects of controlled rolling parameters and adding of Niobium have been studied. In this order two steel grades with and without Niobium are planed and after steelmaking and continuous casting, rolling process are done. Then, laboratory investigations such as microstructure, mechanical properties and grain size analysis were performed Tensi
Brazilian Journal of Physics. Publicado em: 2010-12