GAS NITRIDING AND CAVITATION EROSION RESISTANCE OF X5CRNI18-10 STAINLESS STEEL

1 SĂLCIANU Cornelia Laura
Co-authors:
2 BORDEAŞU Ilare 3 MITELEA Ion 4 CRĂCIUNESCU Corneliu Marius
Institutions:
1 „Polytechnica“ University of Timisoara, Mihai Viteazul No.1, 300222 Timisoara, Romania, EU, salcianu.laura@yahoo.com
2 „Polytechnica“ University of Timisoara, Mihai Viteazul No.1, 300222 Timisoara, Romania, EU, ilarica59@gmail.com
3 „Polytechnica“ University of Timisoara, Mihai Viteazul No.1, 300222 Timisoara, Romania, EU, ion.mitelea@upt.ro
4 „Polytechnica“ University of Timisoara, Mihai Viteazul No.1, 300222 Timisoara, Romania, EU, craciunescucm@yahoo.com
Conference:
25th Anniversary International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, May 25th - 27th 2016
Proceedings:
Proceedings 25th Anniversary International Conference on Metallurgy and Materials
Pages:
843-848
ISBN:
978-80-87294-67-3
ISSN:
2694-9296
Published:
14th December 2016
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
102 views / 33 downloads
Abstract

The harmful effect of cavitation is the erosion of the material. Although there are many studies on improving the mechanical properties of the material in order to increase resistance to cavitation so far none has defined the optimal solution for complete protection against this type of wear. New methods aimed at increasing resistance to cavitation erosion use surface hardening techniques. One of them is the gas nitriding, which ensures a significant increase of the surface layer hardness. This aim of present paper is highlighting the behavior and the resistance acquired by X5CrNi18-10 austenitic stainless steel, nitrided in gas. This steel is used both for manufacturing and repair works of details used for equipment subjected to intense cavitation. The cavitation erosion resistance is put into evidence both by analyzing the images of the eroded surfaces by optical and electronic microscopy, as well as by comparing the specific characteristics curves of the steel subjected to solution treatment at 1100 °C with cooling water and the standard OH12NDL steel, which is known for good resistance to cavitation attack, in field conditions.

Keywords: Austenitic stainless steel, gas nitriding, cavitation erosion, mean depth erosion, erosion rate

© This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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