The use of Inconel 600* in high purity steam for power applications is well known because of its excellent corrosion resistance and mechanical properties and weldability. In Westinghouse practice, this alloy is applied to various nuclear steam generator tubing and fossil turbine expansion joints. It is the latter application that we wish to discuss in this paper. The purpose of this paper is to discuss the service history of these expansion bellows, to illustrate a typical case of failure, propose S.C.C. mechanisms, and to rationalize the most probable mechanism. We indeed will demonstrate Inconel 600 to be a highly reliable material for this application.

Subject
Materials, Nickel based alloys, Turbines, Bellows, Corrosion cracking, Stress cracking, Joints, Intergranular cracking, Stress, Mechanical failure, Deposit corrosion, Caustic stress corrosion cracking, Steam
© 1975 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).
1975
Association for Materials Protection and Performance (AMPP)
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