The exposure of heat-resistant alloys to high temperature can significantly change their mechanical properties. This paper presents and analyzes data on the effect of thermal exposure on the tensile and impact behavior of three cast materials — the HK-40, HP-50, and 21 Cr-32Ni-Fe alloys — and of wrought material — Alloy 800. The changes in tensile and impact properties caused by high-temperature exposure are reviewed. Reasons for these property changes and needs for considering them in the design, operation, and life assessment of high-temperature equipment are discussed.

Subject
Materials, Carbides, Precipitation (solids), Tubes, Elastic modulus, Tensile strength, Equipment, Risk reduction, Titanium alloys, Alloys, Wrought metals, Aging, Ductility
Keywords:
temperature, centrifugal castings, wrought plate, tensile strength, tensile ductility, impact strength, elastic modulus, heat-resistant alloys, aging
© 1994 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).
1994
Association for Materials Protection and Performance (AMPP)
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