Experiments were performed on a compact tension specimen of 316L stainless steel to determine its susceptibility to intergranular environmentally assisted cracking in 288°C water. Crack growth rates were measured using a reversing dc potential drop technique as a function of mechanical loading variables in 288°C water containing 200 ppb dissolved oxygen and 0.5 μS/cm Na2SO4. The specimen was tested in the as-received plus 650°C/1 hour heat treatment condition. The crack propagation rate at constant stress intensity of 25 ksiin was 4.2 x 10-9 cm/s (6.0 x 10 in/hr), about a factor of 8 lower than the typical crack growth rate for sensitized Type 304 stainless steel under similar test conditions.

Subject
Strain rate, Crack growth, Water, Materials, Stress intensity, Tip strain, Water chemistry, Stress cracking, Creep, Stainless steel, Grain boundary, Conductivity, High temperature
© 1987 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).
1987
Association for Materials Protection and Performance (AMPP)
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