IMPROVEMENT OF CAVITATION EROSION RESISTANCE OF A LOW ALLOYED STEEL 16MNCR5 THROUGH WORK HARDENING

1 GHERA Cristian
Co-authors:
1 MITELEA Ion 1 BORDEAŞU Ilare 1 CRĂCIUNESCU Corneliu
Institution:
1 „Polytechnica“ Universty of Timisoara, Timisoara, Romania, EU cghera@yahoo.com, ion.mitelea@upt.ro, ilarica59@gmail.com, 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:
661-666
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:
46 views / 9 downloads
Abstract

This paper analyses the effect of work hardening on the behaviour to cavitation erosion for the low alloyed steel 16MnCr5.Cavitation tests were conducted on a vibrator device with piezoceramic crystals, which fully complies with the requirements imposed by the ASTM G32 – 2010.The evaluation of behaviour at cavitation erosion was made based on curves gradient of hardness on the section of layer hardened by cold plastic deformation, as well as the variation curves of cavitation parameters MDE (depth of penetration of erosion) and MDER (penetration rate of erosion) with the duration of test. The topography of surfaces damaged by cavitation and the structural changes resulting in marginal layer were analysed with light microscopy and scanning electron microscope, they justified the significant increases of resistance to cavitation erosion.

Keywords: work hardening, low alloyed steel, cavitation erosion

© 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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