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Assessment of parameters variations for treatment of CO2 laser carburizing over AISI 4340 steel

Barros, Renato and Delbé, Karl and Denape, Jean and Rodrigues, Humberto and Abdalla, Jorge Assessment of parameters variations for treatment of CO2 laser carburizing over AISI 4340 steel. (2015) In: Journées Internationales Francophones de Tribologie, 27 May 2015 - 29 May 2015 (Nantes, France). (Unpublished)

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Abstract

This study evaluated the best parameters for the carburizing treatment using a CO2 laser of low power over an AISI 4340 steel previously subjected to heat treatments of quenching and tempering. The coating process used a liquid dispersion of carbon black in ethanol and carboxyl methylcellulose. The laser power was kept constant at 125 W and the resolution is 600 dots per inch. The variable parameter of CO2 laser was the speed. Two speeds were selected for the coating preparation: 1200 and 2000 m/s. After treatment, metallographic preparation and optical microscopy observation were performed in addition to the evaluation of parameter variations through hardness measurements and microscratch tests.

Item Type:Conference or Workshop Item (Poster)
Audience (conference):National conference proceedings
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Other partners > Departamento de Ciência e Tecnologia Aerospacial - DCTA (BRAZIL)
Other partners > Faculdade de Tecnologia e Ciências - FATEC (BRAZIL)
Other partners > Universidade Estadual Paulista Júlio de Mesquita Filho - UNESP / São Paulo State University (BRAZIL)
Laboratory name:
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Deposited On:29 Apr 2016 10:02

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