The resistance of steel wires to hydrogen embrittlement is very difficult to define and is therefore rarely investigated in literature. In this work a C65 steel wire was tested in hot rolled condition and after cold rolling. Both material states were first cathodically charged in sodium chloride (NaCl) with addition of thiourea (CH4N2S) at different current densities to determine the hydrogen content of each charging condition. In the next step mechanical properties and susceptibility to hydrogen induced stress corrosion cracking (HISCC) were determined in Slow Strain Rate Tests (SSRT). To prevent hydrogen effusion during experiments, samples were additionally further charged during the SSRT. Critical hydrogen concentrations for initiation of HISCC of both material states have been determined, whereas the critical hydrogen concentration is lower in the hot rolled state.

Subject
Embrittlement, Hydrogen induced cracking, Hydrogen embrittlement, Materials, Hydrogen content, Sodium chloride, Hydrogen absorption, Wiring, Hydrogen charging, Lead, Steel, Hydrogen, Samples
© 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. 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.