Thermal Tempering
Mostrando 1-9 de 9 artigos, teses e dissertações.
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1. Escolha das Energias de Soldagem para Aplicação na Técnica da Dupla Camada na Soldagem do Aço ASTM 131 Grau AH 36
Resumo Durante o processo de soldagem o aço microligado ASTM A131 Grau AH36 pode apresentar defeitos oriundos dos ciclos térmicos (distorções) que demandarão procedimentos onerosos como o tratamento térmico pós-soldagem. Somando-se a isto, este aço não é indicado a sofrer normalização, normalização seguida por revenimento, ou por têmpera e rev
Soldag. insp.. Publicado em: 09/05/2019
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2. Tempering Temperature Influence on 13Cr4Ni0.02C Steel Corrosion Resistance
The thermal treatments employed in alloys are essential to obtaining desired microstructures and corrosion resistance properties. In this paper the low carbon martensitic steel 13Cr4Ni0.2C with different tempering temperatures was studied using potentiodynamic polarization technique in synthetic marine environment, in order to evaluate the effect of the temp
Mat. Res.. Publicado em: 13/11/2017
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3. Características mecânicas de vergalhões de aço auto-revenido
The rebar steel is one of the most utilized and diffused materials in Brazilian civil construction, as it is in the whole world, but it´s necessary to know more details about the rebar behavior as a material and not only as a structural element. Each day civil engineering searches for new alternatives to maximize the use of materials, from new structural ca
Publicado em: 2009
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4. Effects of thermal and chemical tempering in a glass dielectric / Efeitos da têmpera térmica e química em um dielétrico de vidro
Os dielétricos de vidro temperado são componentes utilizados em isoladores elétricos de linhas de transmissão e de distribuição de energia elétrica, e devem apresentar confiabilidade operacional para suportar o clima e as condições de poluição das cidades e metrópoles do Brasil. O objetivo deste trabalho foi desenvolver uma rota de produção de
Publicado em: 2007
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5. Creep properties of 1.25Cr-1Mo-0.25V steels for turbine casings
A heat resistant steel, 1.25Cr-1Mo-0.25V, produced by a casting process and used in the manufacture of turbine casings, has been heat treated with a combination of thermal cycles that involve annealing, quenching and tempering in order to obtain high mechanical properties - in particular, rupture-strength at high temperatures. The Larson-Miller Parameter has
Rem: Revista Escola de Minas. Publicado em: 2005-06
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6. Uma metodologia para a avaliação dos gradientes de tenacidade a fratura ao longo da camada cementada do aço SAE 5115 / A model for fracture toughness evaluation of the carburized layer for SAE 5115 steel
The purpose of this work is to propose a model for evaluating the fracture toughness along the SAE 5115 steel carburized layer. Due to the small thickness of those layers, it is impossible to machine specimens from those layer in accordance with standards. For simulating the microstructures of the carburized layer in order to get samples for tensile and the
Publicado em: 2005
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7. Microstructure and mechanical properties of a microalloyed steel after thermal treatments
The properties of a microalloyed steel, with Nb and V in its composition, were studied, after different intercritical thermal treatments and at different austenitizing and tempering temperatures. The mechanical properties of the specimens were measured in a Vickers hardness tester, and their microstructures were analyzed by optical microscopy, with the aid o
Materials Research. Publicado em: 2003-06
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8. Fracionamento termico e obtenção de gorduras de cupuaçu alternativas a manteiga de cacau para uso na fabricação de chocolate
Thermal analyses of natural cupuaçu fat (Theobroma grandiflorum Schumann) acquired in Manaus, AM, were made by Differential Thermal Analyses with a DSC, and indicated similar polimorphic behavior to cocoa butter. When submitted to traditional tempering process used for cocoa butter, both fats crystallized preferenciaty in the Forms IV and V. The composition
Publicado em: 2001
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9. Effect of Available Water on Thermal Resistance of Three Nonsporeforming Species of Bacteria
Cells of Escherichia coli, Pseudomonas fluorescens, and Staphylococcus aureus, previously grown in Trypticase Soy Broth (TSB) at a high level of available moisture (aw 0.994) and at low levels produced by addition of NaCl or glucose, were heated in neutral phosphate buffer, and in this buffer adjusted to low levels of available moisture by means of NaCl or g