A5087445956- Microstructure and Mechanical Properties of Steels
- Metallurgy and Material Forming
- Metal Alloys Wear and Properties
- Advanced Surface Polishing Techniques
- Advanced Machining and Optimization Techniques
- Advanced machining processes and optimization
- Metal Forming Simulation Techniques
- Recycling and Waste Management Techniques
- Microstructure and mechanical properties
- Aluminum Alloy Microstructure Properties
- Environmental Sustainability and Education
- Recycled Aggregate Concrete Performance
- Metal and Thin Film Mechanics
- Extraction and Separation Processes
- Chemistry Education and Research
- Aluminum Alloys Composites Properties
- Materials Engineering and Processing
Universidade Federal do Rio Grande do Sul
2017-2023
Universidade Federal de Santa Catarina
2023
Universidade Federal do Rio Grande
2023
Universidade de Caxias do Sul
2016
Yield strength and toughness in steels are directly associated with hot forging processes, especially by controlling austenitic grain size cooling conditions. The phenomenological JMAK model macroscale has been applied different material classes to predict after forming. However, on an industrial application, there is still a lack of understanding concerning the synergic effects strain rate temperature recrystallization. This preliminary study aimed at investigating applicability coupled...
It is well recognized the importance of rheological characterization for development steel in thermomechanical treatments, especially mechanical properties improvement bainitic steels subsequent hot forging optimization. Therefore, plastic strain behaviour a low carbon high silicon was studied through isothermal compression tests using simulator at temperatures 1123 K – 1423 and rates 0.1 5 s-1. Arrhenius equation used to obtain constitutive constants, which represents material flow stress...
Controlling the recrystallization is an important way to reach grain size refinement and outstanding strength toughness on alloy metals. This study sets out application investigation of mathematical microstructure modeling a newly designed bainitic steel for hot forging industrial applications. The macro-scale model was used observe predict austenitic behavior during controlled gear. Arrhenius growth kinetic new class established given strain rate ranges temperatures. calibrated through...
Thermo-mechanical treatments using continuous cooling after forging are an established method for producing bainitic steels, mainly because of the elimination energy intensive additional heat treatment processes. The is usually employed in uncontrolled manner industrial sector, which can be detrimental to resulting microstructural morphology and, consequently, final product properties. In this study, a new controlled two-step route based on principles displacive growth was designed and...
Abstract Sustainability has become increasingly important, given the scenario of environmental degradation, and industrial sector is significantly responsible for this adverse scenario. An important manufacturing process casting, but it consumes many natural resources generates waste, emitting pollutants consuming much water electricity. Thus, work investigated impacts through life cycle assessment (LCA) arising from gray cast iron casting by adding niobium scrap. Niobium improves molten...
Electrical Discharge Machining (EDM) removes material by melting and vaporization as consequence of high temperatures generated high-frequency electrical discharges. This result changes the integrity, due to production an affected layer micro-cracks. In this study, integrity use unilateral side flushing in EDM was evaluated. The experiment consisted machining square cavities with different parameters. Analysis texture, roughness, micro-hardness were investigated. results show variations...
Over the last decades, alloy 718 usage has expanded and requirements imposed by its industrial applications became more critical. The knowledge about grain boundary character distribution (GBCD) in effect on properties improvement is mostly built based iterative processing through cold rolling steps interspersed with solution annealing. Alloy found industry many different forms geometries, fabricated multiple thermomechanical processes such as wire drawing, rolling, forging or extrusion....
Electrical discharging machining is a process that uses high-frequency electrical discharges to generate heat, melting and vaporising the workpiece material. Melted material flushed away by dielectric flushing. However, only part of molten removed, remaining resolidifies discharge craters, which affects integrity workpiece. This paper discusses how flushing flow radii electrode under different conditions can affect roughness affected layer. Rectangular cavities were machined with copper in...
A fabricação de componentes para conformação mecânica possui uma gama exigências devido aos esforços cíclicos, como por exemplo, fadiga térmica.Devido à capacidade formar geometrias complexas e usinar metais alta dureza, a eletroerosão (EDM-Eletrical Discharge Machining) eficiência na produção destas matrizes.O estudo da integridade superficial do material erodido torna-se importante avaliarmos qual são as condições ideais tratamentos termoquímicos que visam otimização superfície matriz...
A redução de recursos operacionais, e.g. tempo e matéria prima, é um dos principais desafios da indústria automotiva. simulação numérica por elementos finitos atua como uma ferramenta computacional importante para a solução destes problemas, forma conferir precisão aos resultados calculados quando comparados fenômenos reais, ocorridos, exemplo, em processos estampagem. Este trabalho tem objetivo abordar o efeito das condições atrito utilizando computacional, chapa bifásica...