The effect of build orientation on the corrosion resistance of 304L stainless steels (UNS S30403) produced by selective laser melting, was studied. Alloy coupons were obtained using three different build directions (vertical, horizontal, and 45° incline). The microstructures of these materials were characterized using optical microscopy and scanning electron microscopy coupled with energy dispersive spectroscopy. To provide insights into the corrosion behavior, electrochemical measurements were conducted and included open circuit potential measurements, linear polarization resistance scans, and Tafel tests. These tests were performed in a commercial corrosion cell containing a 3.5 wt% NaCl solution at room temperature. Results of the electrochemical and microstructural characterization are presented and discussed.

Subject
X-ray diffraction, Materials, Materials performance, Microstructure, Metal coupons, Pores, Optical micrographs, Corrosion behavior, Lasers, Pitting, Polarization, Alloys, Linear polarization resistance
Keywords:
Selective laser melting, UNS S30403, Corrosion, Additive Manufacturing, Build Orientation
© 2021 Association for Materials Protection and Performance (AMPP). All rights reserved. No part of this publication may be reproduced, stored in a retrieval system, or transmitted, in any form or by any means (electronic, mechanical, photocopying, recording, or otherwise) without the prior written permission of AMPP. Positions and opinions advanced in this work are those of the author(s) and not necessarily those of AMPP (OR NACE OR SSPC). Responsibility for the content of the work lies solely with the author(s).
2021
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.