Materiais Avançados

Resumo: Este artigo apresenta um modelo matemático em multiescala para a descrição do processo de redução direta de minério de ferro, considerando as reações gás-sólidas sólido não-catalíticas no reator de leito móvel de partículas em movimento descendente que opera em contracorrente com o escoamento gasoso ascendente. A fluidodinâmica computacional (CFD), Leia mais…

Abstract: The use of lightweight structural elements across various industries has seen significant progress due to the adoption of carbon fiber-reinforced polymers (CFRPs). Among these, polyamide 6 (PA6) stands out as a prevalent thermoplastic polymer, renowned for its exceptional processability, favorable mechanical attributes, and cost-effectiveness. These qualities position it as Leia mais…

Abstract: The quantification of rare earth elements in (Nd-Pr)-FeB alloys used in the production of super magnets is required to ensure the quality of the raw material and a final product with suitable properties. Laser-induced breakdown spectroscopy is attractive to this aim by avoiding the need for decomposition of the Leia mais…

Abstract: This study delves into the formulation of an advancedmicrostructure in medium-carbon high silicon spring steel through a series of engineered heat treatments. The microstructure, composed of lower bainite, proeutectoid ferrite, and pearlite, exhibits superior mechanical properties compared to traditional pearlitic steel. Specifically, the novelmicrostructure yields a strength of 870 Leia mais…

Abstract: In a world in which vehicles of higher energy efficiency have constantly been pursued, the development of multi-material structures can be extremely interesting as far as structural weight reduction and the mitigation of greenhouse gas emissions are concerned. This paper evaluates basic mechanical properties of vehicular structural joints between Leia mais…