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Identificação de um modelo constitutivo para simulação computacional do processo de prensagem a frio de um material refratário sílico-aluminoso
(Universidade Federal de São Carlos, 2016-08-05)
One of the methods for the processing of refractory material is cold pressing of the powder material, followed by sintering. Heterogeneous distribution of density can occur in the green compact during pressing because of ...
Correlações entre parâmetros microestruturais, parâmetros térmicos e resistência mecânica de ligas Sn- Bi e Sn-Bi-(Cu,Ag)
(Universidade Federal de São Carlos, 2016-10-07)
The present research aims to develop a theoretical/experimental analysis of the
combined effects of solidification thermal parameters, Bi content and addition of
ternary elements (Cu, Ag) on the final microstructure ...
Previsão do posicionamento de partículas de nanosílica numa blenda polimérica imiscível e comprovação via turbidimetria
(Universidade Federal de São Carlos, 2016-03-07)
The optical behavior of polymer systems with nanoparticles was studied in order to quickly assess the location of the nanoparticles in the immiscible polymer blend phases and interface using optical microscopy. The systems ...
Análise sistêmica dos fornos de cozimento de anodo para a indústria de alumínio
(Universidade Federal de São Carlos, 2010-05-05)
The recent global economic crisis allied with the trend for sustainable
companies and countries have meaningfully changed the aluminum area.
Previously, the productivity was the main focus of the metal producer and ...
Avaliação da resistência à corrosão localizada do alumínio em juntas dissimilares al-ti soldadas por fricção por ponto (FSpW)
(Universidade Federal de São Carlos, 2017-03-27)
The work evaluated the effect of the FSpW welding process on the aluminum surface in two overlapping welded joints, AA6181-T4/Ti-6Al-4V and AA5754-H22/Ti-6Al-4V. The microstructural changes were evaluated through optical ...
Process parameters optimization and microstructure evaluation on friction spot-welded aluminum/copper dissimilar joints
(Universidade Federal de São Carlos, 2016-11-17)
Dissimilar materials welding is a field of increasing interest for a wide range of industrial applications. Specifically, the welding of aluminum alloys with copper has potential applications in the heating, ventilation ...
Influência da mistura gasosa e da temperatura no processo de nitrocarbonetação a plasma do aço DIN 100Cr6
(Universidade Federal de São Carlos, 2018-08-10)
The surface treatments of metal alloys allow improving the surface qualities by the deposition of another material or by surface modification, producing coatings. The nitrocarburizing, considered one of the most important ...
Processo de laminação com resfriamento criogênico em ligas de magnésio para armazenagem de hidrogênio
(Universidade Federal de São Carlos, 2017-08-25)
The use of metallic hydrides is a competitive alternative to the hydrogen storage in the liquid or gas states. The magnesium is cheap and forms the metal hydride with higher gravimetric capacity. In this work, the commercial ...
Ligas Sn-Ni: efeitos da taxa de resfriamento e da microestrutura nas propriedades mecânicas de tração
(Universidade Federal de São Carlos, 2018-02-28)
The present investigation examined the microstructural arrangements formed during the transient solidification of the eutectic Sn-0.2wt.%Ni and the hypereutectic Sn-0.5wt.%Ni alloys using two different substrates as mold ...
Comportamento em fadiga de hastes femorais para artroplastia de quadril com superfícies modificadas
(Universidade Federal de São Carlos, 2015-07-20)
Nowadays, titanium and its alloys are the materials of choice for the
production of implants for hip arthroplasty, a surgery that aims for the
improvement of the quality of life of patients that bear articular pathologies ...