Influence of Laser Power on the Microhardness and Wear Resistance Properties of Laser Metal Deposited 17-4 PH Stainless Steel

  • A. Adeyemi Department of Mechanical Engineering Science, University of Johannesburg
  • E. T. Akinlabi Department of Mechanical Engineering Science, University of Johannesburg
  • R. M. Mahamood Department of Mechanical Engineering Science, University of Johannesburg
DOI: https://doi.org/10.35219/awet.2018.08
Keywords: Laser Metal Deposition, Laser power, 17-4 PH stainless steel, microhardness, wear resistance

Abstract

This aim of this research is to investigate the impact of laser power on the hardness and the wear resistance properties of laser metal deposited 17-4 PH stainless steel. Hardness was studied using the Zwick/Roell microhardness tester and the wear resistance property was carried out using the ball-on-disc Anton Paar-tribometer wear tester. The study revealed that an irregular increase and decrease in the average hardness value and wear behaviour were observed. This could be attributed to the presence of copper precipitate which was more concentrate at the overlapping region because of the reheating activity that is happening between the succeeding and preceding track layers.

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Published
2018-12-28
How to Cite
Issue
Vol 29 (2018)
Section
Articles

Papers accepted for publication become the copyrighted property of the Annals of "Dunarea de Jos" University of Galati, Fascicle XII, Welding Equipment and Technology. No part of the publication may be reproduced or transmitted in any form, or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, except in limited quantities for the non-commercial purposes of scientific or educational advancement, without permission in writing from the Editorial Board.