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Mostrando ítems 51-60 de 84
Avaliação da integridade superficial de insertos retificados da liga WC-Co para ferramentas de corte
(Universidade Federal de São Carlos, 2021-05-11)
Cutting tools produced from cobalt tungsten carbide alloy (WC-Co),
compared to conventional cutting tools, provide lower cost of machining, with
increasing productivity and acceptable combination of hardness and ...
Efeito da adição de Al e C na evolução microestrutural e no comportamento mecânico de aços austeníticos de baixa densidade com alto teor de Mn
(Universidade Federal de São Carlos, 2021-05-20)
Low-density steels are advanced materials that are being developed mainly for the automotive industry to reduce the structural weight of cars. The most common studied compositions comprise FeMnAlC variations, in which both ...
Produção de recobrimentos resistentes ao desgaste através de laser cladding de pós das ligas amorfizáveis fe-co-nb-b-(y)
(Universidade Federal de São Carlos, 2020-07-28)
Industrial components can be subjected to a high level of surface wear it
necessary to search for new wear-resistant alloys to improve the performance
and safety of the components. The objective of this work was to produce ...
Efeito da microadição de oxigênio na estabilidade microestrutural da liga Ti-29Nb-13Ta-4,6Zr processada via deformação plástica severa e envelhecimento
(Universidade Federal de São Carlos, 2021-02-24)
Gum Metal corresponds to a family of β-Ti alloys that are currently receiving great attention due to its outstanding properties such as low elastic modulus, superelasticity, and high tensile strength. These alloys show ...
Avaliação das microestruturas de solidificação e propriedades de aplicação de ligas monotéticas Al-Bi, Al-Bi-Cu e Al-Bi-Zn
(Universidade Federal de São Carlos, 2021-06-16)
Monotectic Al-based ternary alloys can result in a good combination of wear resistance and mechanical strength. While the soft self-lubricating elements contribute to an appropriate wear resistance, modification with third ...
Estudo do comportamento mecânico das ligas de titânio beta metaestável TMZF e Ti15%Mo durante processamento termomecânico
(Universidade Federal de São Carlos, 2020-10-02)
Stress-strain curves of two metastable beta titanium alloys, the Ti-15%Mo alloy and the TMZF alloy were evaluated. The curves were obtained from isothermal hot compression tests in a temperature range from 650 to 900 ° C, ...
Influência da adição de Co e Ni e da taxa de resfriamento na microestrutura de solidificação, nas propriedades mecânicas e na corrosão de ligas Al-Si-Cu-Zn-Fe
(Universidade Federal de São Carlos, 2022-11-28)
An important strategy by 2050 will be to transform the production of recycled Al-Si alloys as a viable and sustainable source to reach the global demand for Al. The challenge will be to mitigate the deleterious effects ...
Efeitos de baixos teores de aditivos (TiFe, Fe, TiAl, Nb₂O₅) na cinética de absorção e dessorção de hidrogênio pelo sistema Mg/MgH₂
(Universidade Federal de São Carlos, 2021-08-31)
The hydrogen economy holds great promise in supplying our planet's urgent clean energy needs. The effective and safe hydrogen storage remains a major technological challenge. Thus, the H2 storage in metal hydrides of light ...
Desenvolvimento e avaliação de dispositivo com fluxos rotacionais para a formação de nanofibras poliméricas pelo processo de fiação por sopro
(Universidade Federal de São Carlos, 2020-09-10)
The spinning of polymeric fibers, with micrometric and nanometric dimensions, has many technical advantages and cost benefits. The techniques known as Electrospinning and Solution Blow Spinning (SBS) have been extensively ...
Nucleação e crescimento de cristais, difusão e relaxação estrutural em vidros 2Na2O.CaO.3SiO2 e 5BaO.8SiO2
(Universidade Federal de São Carlos, 2021-06-25)
Despite intensive research regarding glass crystallization, there are still flaws in the theories and especially in their application. Aiming to verify the applicability of the classical nucleation theory (CNT) and the ...