Several different failure mechanisms have caused deaerator cracking. Design, age, material and operation differences among cracked vessels complicate generalizations concerning failure modes. Nevertheless, considerable microstructural evidence suggests corrosion fatigue is the cause of most deaerator cracking. The corrosion fatigue process is discussed with regard to mechanisms, accelerating factors and crack morphologies. Special attention is paid to the deaerator environment and the corrosion fatigue process. The influence of corrodants, stresses, welds and designs is discussed.

Subject
Corrosion fatigue, Metal surfaces, Transgranular stress corrosion cracking, Corrosion cracking, Stress cracking, Thermal stress, Stress, Mechanical failure, Tensile stress, Deaerators, Carbon steel, Caustic stress corrosion cracking, Stress corrosion cracking
© 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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