While many studies have been made on the corrosion and stress corrosion behavior of austenitic and ferritic stainless steels, relatively few investigations have been conducted into the corrosion and stress corrosion properties of duplex stainless steels. The brief body of literature on the corrosion of duplex stainless steels is primarily concerned with the corrosion properties of as-annealed, cast duplex stainless steel.1-3- Little attention has been given to the effect of heat treatments and microstructural changes on the corrosion characteristics. However, during the early investigations of austenitic stainless steels, several studies were conducted in the United States,4  England,5  and Germany6  which indicated the superior intergranular corrosion resistance of stainless steels containing 20-40 v/o (volume percent) ferrite. No theoretical explanation was provided for their good behavior. These studies, apparently, went largely unnoticed since little commercial use was made of duplex stainless steels, other than to take advantage of their high alloy content and employ them as weld metals.

Subject
Water, Materials, Intergranular stress corrosion cracking, Precipitation (solids), Chromium, Fracture surfaces, Heat, Stainless steel, Ferrite, Grain boundary, Intergranular corrosion, Aging, Austenite
© 1978 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).
1978
Association for Materials Protection and Performance (AMPP)
You do not currently have access to this content.