Case Carburized
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Surface Integrity Analisys in the Hard Turning of Cemented Steel AISI 4317
This work was based on the surface integrity analysis of hardened steel, AISI 4317 case carburized, quenched and tempered with 58 HRC, obtained by a turning operation executed with CBN (cubic boron nitride) tool, varying three basic cutting parameters (cutting speed, feed rate and cutting depth). The surface integrity characterization was conducted analyzing
Mat. Res.. Publicado em: 26/07/2018
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2. Effects of carburization time and temperature on the mechanical properties of carburized mild steel, using activated carbon as carburizer
Due to the complexity of controlling parameters in carburization, there has been relatively little work on process variables during the surface hardening process. This work focuses on the effects of the carburizing temperature and time on the mechanical properties of mild steel carburized with activated carbon, at 850, 900 and 950 ºC, soaked at the carburiz
Materials Research. Publicado em: 2009
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3. Influencia do teor de carbono na propagação de trinca por fadiga e na tenacidade a fratura em camada cementada em aços de alta resistencia mecanica / Influence of the carbon content on propagation in cracks of fadigue and on fracture toughness in carburized case in high strenght steels
Este trabalho propõe uma metodologia para avaliar pontualmente as variações de tenacidade à fratura e taxa de crescimento de trinca de fadiga ao longo da camada cementada de um aço SAE 4320. A pequena espessura dessas camadas impede a retirada de corpos de prova nas dimensões especificadas pelas normas de ensaios de tenacidade à fratura. Assim, para s
Publicado em: 2008
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4. Surface processing to improve the fatigue resistance of advanced bar steels for automotive applications
With the development of new steels and processing techniques, there have been corresponding advances in the fatigue performance of automotive components. These advances have led to increased component life and smaller power transfer systems. New processing approaches to enhance the fatigue performance of steels are reviewed with an emphasis on carburizing an
Materials Research. Publicado em: 2005-12
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5. Uma metodologia para a avaliação dos gradientes de tenacidade a fratura ao longo da camada cementada do aço SAE 5115 / A model for fracture toughness evaluation of the carburized layer for SAE 5115 steel
The purpose of this work is to propose a model for evaluating the fracture toughness along the SAE 5115 steel carburized layer. Due to the small thickness of those layers, it is impossible to machine specimens from those layer in accordance with standards. For simulating the microstructures of the carburized layer in order to get samples for tensile and the
Publicado em: 2005
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6. Influência da austenita retida no crescimento de trincas curtas superficiais por fadiga em camada cementada de aço SAE 8620 / The influence of retained austenite on short fatigue crack growth in case carburized SAE 8620 steel
The retained austenite is always present in case carburized steel microstructure in small or high percentages. Since it is a ductile phase, its presence has long been a controversial subject. The influence of retained austenite on short fatigue crack propagation in case carburized SAE 8620 steel was studied in this work. Four-point-bend fatigue tests were ca
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 02/10/1997