Duplex stainless steels have been used for paper mill suction rolls for more than a decade. The failures that have occurred have been attributed to corrosion fatigue initiated by defects or by high residual stresses.

To eliminate the castings defects responsible for many of the failures, the technology for fabrication of shells from rolled and welded wrought plate has been developed over the last ten years. This paper describes a new heat treatment method designed to minimize residual stress. This method involves annealing the shells in a vertical position and rotating the shells during air cooling.

Results of different corrosion fatigue tests as well as other tests relevant to paper machine applications are presented for two duplex stainless steels.

Subject
Corrosion fatigue, Materials, Microstructure, Rolling, Tensile stress, Steel, Duplex stainless steel, Ferrite, Heat treatment, Corrosion fatigue strength, Weld metal, Wrought metals, Residual stress
© 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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