A new set of fracture mechanics stress corrosion crack growth rate data is presented for transgranular cracking of carbon and low alloy steels exposed to high temperature water. The essential observations are as follows. Fast stress corrosion crack growth rates between 10−9 and 10−8 m/s may be observed down to 400 ppb dissolved oxygen at water conductivities of 0.5 μS/cm in refreshed autoclaves. There is no effect of specimen thickness on the stress corrosion crack growth rates. Temperature, however, clearly is a major influential parameter on stress corrosion cracking.

Subject
Pressure vessels, Crack growth, Water, Stress intensity, Corrosion rate, Autoclaves, Transgranular stress corrosion cracking, Corrosion growth, Steel, Oxygen, Stress corrosion cracking, Conductivity, Low alloy steel
Keywords:
Carbon and low alloy steel, reactor pressure vessel steel, transgranular stress corrosion cracking in water, effect of stress intensity, dissolved oxygen, specimen thickness, temperature
© 1995 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).
1995
Association for Materials Protection and Performance (AMPP)
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