INVESTIGATIONS REGARDING THE CAVITATION EROSION RESISTANCE OF THE AL2O3 30(NI 20AL) LASER DEPOSITIONS ON THE 17-4 PH STAINLESS STEELS

1 KATONA Ştefan-Eusebiu
Co-authors:
1 OANCĂ Octavian 1 BORDEAŞU Ilare 1 MITELEA Ion 1 CRĂCIUNESCU Corneliu Marius
Institution:
1 ”Politehnica“ University of Timisoara, Timisoara, Romania, EU, keusebiu@yahoo.com, octavian.oanca@yahoo.com, ilarica59@gmail.com, ion.mitelea@upt.ro, craciunescucm@yahoo.com
Conference:
24th International Conference on Metallurgy and Materials, Hotel Voronez I, Brno, Czech Republic, EU, June 3rd - 5th 2015
Proceedings:
Proceedings 24th International Conference on Metallurgy and Materials
Pages:
482-486
ISBN:
978-80-87294-58-1
ISSN:
2694-9296
Published:
12th January 2015
Proceedings of the conference were published in Web of Science and Scopus.
Metrics:
63 views / 17 downloads
Abstract

On the surface of a 17-4 PH stainless steel, powders from the cermet group were submitted, using the plasma thermal spray technique on a METCO SULZER installation. Thereafter, a part of the sprayed samples were remelted at the surface withu the Nd:YAG laser beam, on a Trumpf HL 123 LCU installation. The cavitation behavior of the samples was tested using an ultrasonic vibratory cavitation erosion equipment. The examination at the optical microscope and scanning electronic microscope of the marginal layer and of the cavitated surface revealed the formation of a dense microstructure, finished by remelting, which explains the increase by 133 % of the erosion resistance compared with the structural state obtained through 1050 °C solution treatment with air cooling.

Keywords: 17-4 PH stainless steel, cavitation erosion, thermal spraying, laser remelting

© 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.

Scroll to Top