Abstract
The selection of materials for use in specific geothermal environments is often made on the basis of stress corrosion cracking or hydrogen embrittlement resistance. This paper will discuss the effect of various heat treatments of selected alloys on the resulting properties. The heat-treatment parameters include precipitation hardening and annealing prior to cold working.
The data demonstrate that composition plays a major role in establishing environmental embrittlement resistance. Aging above temperatures around 1300° to 1400°F improves hydrogen embrittlement resistance of a number of alloys. The stress corrosion cracking resistance of Alloy 718 and Alloy No. R-41 are reduced by precipitation-hardening heat treatments.
© 1986 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).
1986
Association for Materials Protection and Performance (AMPP)
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