NDLI: Detection of Secondary Phases in UNS S32760 Superduplex Stainless Steel by Destructive and Non-destructive Techniques

Content Provider	Springer Nature Link
Author	Argandona, G. Biezma, M. V. Berrueta, J. M. Berlanga, C. Ruiz, A.
Copyright Year	2016
Abstract	Duplex stainless steels (DSS), with a microstructure of an approximately equal mixture of ferrite (α) and austenite (γ) phases, are susceptible to the formation of undesirable phases if manufacturing processes are not carefully controlled. In particular, sigma phase (σ) is a Cr- and Mo-rich intermetallic phase, formed generally when DSS are by the temperature range from 600 to 900 °C, even for very short time periods. The precipitation of this phase induces detrimental effects in mechanical and corrosion resistance properties in the material, and even a low volume percentage of σ phase can significantly affect these properties. The current paper presents the effect of thermal treatments on UNS S32760 superduplex stainless steel seamless tubes, applied in order to promote the precipitation of different σ phase percentages in a ferrite/austenite microstructure. The detection and quantification of the σ phase using non-destructive ultrasounds testing has been one of the most relevant events of this study that contributes to improving the correlation of the results obtained using destructive and non-destructive techniques for the quantification of undesirable phases in superduplex seamless tubes during the manufacturing process.
Starting Page	5269
Ending Page	5279
Page Count	11
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	25
Issue Number	12
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2016-10-19
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	birefringence duplex stainless steel seamless tube manufacturing sigma phase ultrasounds Characterization and Evaluation of Materials Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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