The influence of dissolved hydrogen and temperature on primary stress corrosion cracking (PWSCC) of alloy 600 was studied at temperature ranging from 310 to 360 °C and hydrogen contents ranging from 0 to 4 ppm using slow strain rate tensile technique (SSRT) and constant load tensile test. In this study, it was revealed that the PWSCC susceptibility of alloy 600 has a maximum near 3 ppm of dissolved hydrogen at 360 °C and the peak shifts to 1 ppm at 320 °C. The mechanism of the peak shift is not clear yet, however, it might possibly be explained by the change of hydrogen recombination reaction and/or change of the surface film.

Subject
Strain rate, Crack growth, Water, Materials, Intergranular stress corrosion cracking, Hydrogen content, Dissolved hydrogen, Tensile tests, Anodic reactions, Metals, Stress corrosion cracking, Test specimen, Hydrogen
Keywords:
alloy 600, MA600, stress corrosion cracking, primary water, SCC, PWSCC, dissolved hydrogen, activation energy
© 2002 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).
2002
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.