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Propriedades mecânicas e características microestruturais de um aço de alta resistência submetido a diferentes processos de têmpera
(Universidade Federal de Minas GeraisUFMG, 2017-06-29)
The effect of different quenching processes, conventional and direct, on the microstructure, mechanical properties and toughness of a high strength steel were investigated in this dissertation. Regardless of the process ...
Análise de variação das propriedades mecânicas a tração provocada pela trefilação de barras de aço AISI 1212
(Universidade Federal de Minas GeraisUFMG, 1981-05-25)
The purpose was to study the variation of mechanical properties of AISI 1212 action bars when subjected to a pass from trefitação, considering the influence of redundant work. From the analysis of results obtained after ...
Propriedades mecânicas dos materiais cilicamente deformados por flexo-tração
(Universidade Federal de Minas GeraisUFMG, 1987-09-08)
Análise da influência do ciclo de recozimento de esferoidização nas propriedades mecânicas do aço SAE 1050
(Universidade Federal de Minas GeraisUFMG, 2006-09-22)
The effects of different spheroidizing annealing cycles on the mechanical properties of a SAE 1050 steel were avaluated. Samples of this material, as cold rolled, were submitted to heat treatment in laboratory scale, varying ...
Propriedades mecânicas da rocha intacta na mineração de ferro
(Universidade Federal de Minas GeraisUFMG, 2000-02-25)
This dissertation presents the results of a study conducted for determination of properties of intact rock. It was performed a series of tests in the laboratory of rock mechanics of the engineering school of the Universidade ...
Análise da influência do nióbio na microestrutura e propriedades mecânicas da barra chata temperada e revenida para aplicação em feixes de mola
(Universidade Federal de Minas GeraisUFMG, 2005-06-02)
This dissertation aimed to evaluate the effect of niobium addition on the mechanic properties and structure of quenched and tempered flat bars applied to springs. Three different heats of ABNT 5160 steel were sampled with ...
Análise da influência dos ciclos térmicos de diferentes projetos de fornos recozimento contínuo na microestrutura e propriedades mecânicas de aços bifásicos galvanizados
(Universidade Federal de Minas GeraisUFMG, 2013-02-26)
The automotive industry has increasing their competitive and the steel companies are investing in the development of high strength steels such as dual phase steels, which have a good combination of strength, formability ...
Efeito das temperaturas de reaquecimento de placas e de bobinamento nas propriedades mecânicas em tração de um aço microligado ao Nióbio laminado a frio
(Universidade Federal de Minas GeraisUFMG, 2006-12-15)
In this study the effect of soaking and coiling temperatures on the mechanical properties and ferrite grain size of a hot rolled and cold rolled and annealed Nb-HSLA steel was evaluated. The results did not show any effect ...
Influência do alumínio nas propriedades mecânicas do ADI (Austempered Ductile Iron)
(Universidade Federal de Minas GeraisUFMG, 2004-07-05)
The ADI (Austempered Ductile Iron), a cast iron obtained after the proper heat treatment of regular sheroidal graphite iron, has been intensely studied in the last years. Silicon is the standard element added for graphitization ...
Influência das temperaturas de encharque e superenvelhecimento nas propriedades mecânicas de um aço ultra baixo carbono com características BH processado via recozimento contínuo
(Universidade Federal de Minas GeraisUFMG, 2010-05-28)
This study evaluated the effects of variations in the conditions of soaking and overaging continuous annealing on mechanical properties in tension, drawability Value (R n) and the increase of mechanical strength by aging ...