Journal of Surface Science and Technology

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Surface Modification of AISI 1018 Low Carbon Steel by Duplex Treatment of Nitrocarburizing and Post-Oxidation


Affiliations
1 Department of Mechanical Engineering, Inder Kumar Gujral - Punjab Technical University, Kapurthala – 144603, Punjab, India
     

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The duplex treatment combining the salt bath nitrocarburizing with post-oxidation technique provides an excellent technique for achieving improved hardness, wear and corrosion resistance of the surface of various steels. Arcor® is a merger of Sursulf and a post-oxidation process (Oxynit). In the present research effects of the duplex treatment (nitrocarburizing and post-oxidation) on the surface morphology of AISI 1018 low carbon steel are reported. Observations revealed that by increasing the holding time a considerable improvement in mechanical properties occured. Optical microscopy investigations revealed compound and diffusion zones on the steel surface with approx. 24 μm thick compounds and oxide layer. Furthermore, a significant decrease in specific wear rate has been observed due to the compact and uniform compound layer.

Keywords

AISI 1018 Steel, Arcor® Salt Bath Process, Duplex Heat Treatment, Surface Modification Techniques.
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  • Surface Modification of AISI 1018 Low Carbon Steel by Duplex Treatment of Nitrocarburizing and Post-Oxidation

Abstract Views: 322  |  PDF Views: 2

Authors

Jagdeep Sharma
Department of Mechanical Engineering, Inder Kumar Gujral - Punjab Technical University, Kapurthala – 144603, Punjab, India
Balwinder Singh Sidhu
Department of Mechanical Engineering, Inder Kumar Gujral - Punjab Technical University, Kapurthala – 144603, Punjab, India
Rajesh Gupta
Department of Mechanical Engineering, Inder Kumar Gujral - Punjab Technical University, Kapurthala – 144603, Punjab, India

Abstract


The duplex treatment combining the salt bath nitrocarburizing with post-oxidation technique provides an excellent technique for achieving improved hardness, wear and corrosion resistance of the surface of various steels. Arcor® is a merger of Sursulf and a post-oxidation process (Oxynit). In the present research effects of the duplex treatment (nitrocarburizing and post-oxidation) on the surface morphology of AISI 1018 low carbon steel are reported. Observations revealed that by increasing the holding time a considerable improvement in mechanical properties occured. Optical microscopy investigations revealed compound and diffusion zones on the steel surface with approx. 24 μm thick compounds and oxide layer. Furthermore, a significant decrease in specific wear rate has been observed due to the compact and uniform compound layer.

Keywords


AISI 1018 Steel, Arcor® Salt Bath Process, Duplex Heat Treatment, Surface Modification Techniques.

References





DOI: https://doi.org/10.18311/jsst%2F2019%2F22173