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O efeito dos tratamentos térmicos na microestrutura e nas propriedades mecânicas de rodas automotivas fundidas a baixa pressão na liga A356
(Universidade Federal de São Carlos, 2019-12-13)
The low-pressure die casting process to produce automotive aluminum alloy wheels is well known, and, in the last decades, has been consolidated as the most common way to produce light automotive wheels in large scale. The ...
Propriedades mecânicas e correlação dos parâmetros de FSW e DS-FSW em alta velocidade na liga AA2050-T84, para a indústria aeronáutica
(Universidade Federal de São Carlos, 2018-11-19)
Friction Stir Welding (FSW) and DS-FSW (double pass FSW) processes were employed in the aluminum AA 2050 T-84 plate joints aiming to make possible to increase the welding speed above 5 mm / s, to obtain welds with optimized ...
Atomização a gás da liga de alumínio AA2017: efeitos dos parâmetros de processo nas características físicas dos pós produzidos visando aplicação em manufatura aditiva
(Universidade Federal de São Carlos, 2022-07-15)
Gas atomization is the main method to produce metal powders for LASER powder bed fusion (L-PBF), which is an additive manufacturing (AM) technique. It produces metallic powders with suitable characteristics to be applied ...
Estudo do tratamento térmico de envelhecimento em patamar simples e duplo da liga UNS N09925
(Universidade Federal de São Carlos, 2023-05-29)
It is well known that several researches related to the development of renewable and alternative energy sources are currently in course. However, with the continuous increase on energy demand around the world, it is still ...
Síntese de nanopartículas de CuO e aplicações catalíticas
(Universidade Federal de São Carlos, 2024-03-28)
Global population growth, reaching 8 billion people in November 2022, will continue to impose significant pressures on industrial production, agriculture, urban mobility, and energy demand. Coupled with the depletion of ...
Caracterização reo-óptica da interação entre desenovelamento e desenrosco de cadeias poliméricas em fluxo cisalhante
(Universidade Federal de São Carlos, 2024-07-04)
Rheo-optical studies involve monitoring the flow of polymers by measuring their optical properties. In the case of pure polymeric fluids, flow birefringence can be used to quantify the molecular chain orientation. This ...
Levantamento de correlações de solidificação da liga A356 para aplicação em simulação computacional e projetos de rodas automotivas
(Universidade Federal de São Carlos, 2024-02-27)
Wheels are safety items with high structural demand. AlSi alloys stand out due to their good ratio between density and strength. The use of A356 alloy processed by Low-Pressure Die Casting (LPDC) and T6 heat treatment ...
Avaliação da solidificação e da interface de reação de juntas soldadas de ligas Sn-Bi E Sn-Bi-In em substratos de cobre e níquel
(Universidade Federal de São Carlos, 2024-03-05)
In order to explore the potential of Sn-Bi-In alloy utilization in soldering operations, the present proposal analyzed the influence of In addition (10 wt.%) on solidification, microstructure, wettability, tensile properties, ...
Aprimoramento das propriedades térmicas e mecânicas de isolantes refratários macroporosos
(Universidade Federal de São Carlos, 2024-02-29)
The pursuit of environmentally friendly and health-conscious solutions has driven the replacement of ceramic fiber-based thermal insulators with macroporous refractories. The latter offer several benefits, including reduced ...
Vitrocerâmicas de silicato de lítio com gradientes microestruturais - simulações e experimentos
(Universidade Federal de São Carlos, 2022-08-08)
The microstructure of glass-ceramics (GCs) depends on their chemical
composition and thermal history, from the cooling of the precursor glass to the
heat treatments. In glass production, the cooling rate on the surface ...