MATERIALS TRANSACTIONS
Online ISSN : 1347-5320
Print ISSN : 1345-9678
ISSN-L : 1345-9678
Assessment of the Electrolyte Composition in the Degree of Sensitization in AISI 347H Stainless Steel
V. L. Cruz-HernándezM. A. García-RenteríaR. García-HernándezV. H. López-Morelos
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2017 Volume 58 Issue 2 Pages 225-230

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Abstract

This study evaluated the suitability of the depassivator in revealing low degrees of sensitization (DOS) in samples of wrought AISI 347H austenitic stainless steel in the as-received condition and solution heat treated (SHT) at 1050℃. Assessment of the electrolyte composition was performed by the double loop electrochemical potentiokinetic reactivation (DL-EPR) test at room temperature. The electrolyte 1.0M H2SO4 + 0.50M HCl was found to be adequate for detecting low DOS. Microstructural characterization of the as-received material revealed the presence of Cr-rich carbides. These carbides were responsible of the susceptibility to IGC.

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© 2016 The Japan Institute of Metals and Materials
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