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CAVITATION RESISTANT LAYERS FROM STELLITE ALLOY DEPOSITED BY TIG WELDING ON DUPLEX STAINLESS STEEL

1 Mutaşcu Daniel
Co-authors:
1 Mitelea Ion 1 Bordeaşu Ilare 1 Buzdugan Dragoş 1 Franţ Florin
Institution:
1 University Politehnica Timişoara, no. 2 P-ta Victoriei, Timişoara, Romania, EU, daniel.mutascu@upt.ro, ion.mitelea@upt.ro, ilare.bordeasu@upt.ro, dragos.buzdugan@upt.ro, florin.frant@upt.ro
Conference:
28th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 22nd - 24th 2019
Proceedings:
Proceedings 28th International Conference on Metallurgy and Materials
Pages:
776-780
ISBN:
978-80-87294-92-5
ISSN:
2694-9296
DOI:
https://doi.org/10.37904/metal.2019.834
Published:
4th November 2019
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
614 views / 292 downloads
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Abstract

The cobalt based alloy, Stellite, was deposited through the TIG welding process on the surface of a Duplex stainless steel to improve cavitation erosion resistance of engineering components that work in aggressive environments. Cavitation tests were performed using ultrasonic vibratory equipment which complies with requirements of the ASTM G32 – 2010 standard. The microstructure of the deposited layers consisted of complex carbides in a Co-Cr solid solution strengthened alloyed matrix with a dendritic structure which ensures high hardness and a significant increase in cavitation erosion resistance compared to the base metal.

Keywords: Alloy Stellite, welding, cavitation, microstructure

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