Study of microstructure and tribological behavior of the composite layer produced of silicon carbide particles on a steel ASTM A106 GTAW welding method

Mazaheri, Hossein; Fazel Najafabadi, Mahmoud; Alaei, Alireza

Document Type : Research Paper

Authors

¹ Department of Material Engineering, Najafabad Branch of Islamic Azad University, Najafabad, Iran

² Department of Mechanical Engineering, Payame Noor University, Esfahan, Iran

Abstract

In this study, formation of composite coating containing silicon carbide amplifiers on ASTM A106-Gr B steel surface using the gas tungsten arc welding process is investigated. Therefore silicon carbide particles with different volume percentages on the steel surface were placed and by changing the current density, melting and mixing process was done with the base metal. The study coating microstructure by optical microscopy and scanning electron microscopy (SEM) was conducted alongside the spot analysis. The result showed that the dendritic structure of the resulting coating contains silicon carbide is capable of reinforcing that could be improved hardness and wear behavior of the coatings. Hard coatings by a micro-hardness measurementand with slab vickersand wear behavior of the coatings was evaluated by testing the wear-trip basis.Microhardness test results showed increased hardness was created (about 650 to 1150 Vickers) compared to uncoated samples (about 200 Vickers) is.Reviews wear behavior of coatings represent significant improvements in wear behavior of is added silicon carbide reinforcement. The main wear mechanism of uncoated samples delamination wear and surface oxidation and the samples were coated with a mixture of delamination wear, surface oxidation and adhesive wear were detected.

Keywords

References

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Journal of Science and Technology of Composites

Study of microstructure and tribological behavior of the composite layer produced of silicon carbide particles on a steel ASTM A106 GTAW welding method

References

Volume 2, Issue 1 - Serial Number 1
June 2015
Pages 65-72

Study of microstructure and tribological behavior of the composite layer produced of silicon carbide particles on a steel ASTM A106 GTAW welding method

References

Volume 2, Issue 1 - Serial Number 1June 2015Pages 65-72

Volume 2, Issue 1 - Serial Number 1
June 2015
Pages 65-72