475oC Embrittlement and Room Temperature Fatigue of Duplex Stainless Steel
IR@NML: CSIR-National Metallurgical Laboratory, Jamshedpur
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| Relation |
http://eprints.nmlindia.org/6038/
http://eprints.nmlindia.org/6038 |
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| Title |
475oC Embrittlement and Room Temperature Fatigue of Duplex Stainless Steel
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| Creator |
Wackermann, Ken
Kumar Sahu, Jitendra Christ, H J |
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| Subject |
Failure Analysis
Materials Charcterization |
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| Description |
Duplex stainless steels (DSSs) are two-phase materials consisting of both the ferritic and the austenitic phase. The alloys are prone to embrittlement particularly in the temperature range between 280°C and 512°C. This so-called 475°C embrittlement is caused by a decomposition of the ferritic phase into a chromium-rich α' and an iron-rich α phase. The objective of this study is to develop a better understanding of the embrittling process of DSS of type SAF 2205. Embrittled and non-embrittled DSS was fatigue tested in stress-controlled tests at 475°C and in strain-controlled tests at room temperature. The high temperature
fatigue tests were stopped at different cycle numbers in order to characterize the changing material conditions by means of room-temperature tensile tests and scanning electron microscopy pictures of the fracture surfaces.
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| Date |
2010
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| Type |
Conference or Workshop Item
PeerReviewed |
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| Format |
application/pdf
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| Language |
en
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| Identifier |
http://eprints.nmlindia.org/6038/1/78_proceeding.pdf.pdf
Wackermann, Ken and Kumar Sahu, Jitendra and Christ, H J (2010) 475oC Embrittlement and Room Temperature Fatigue of Duplex Stainless Steel. In: Proceedings of 18th European Conference on Fracture of Materials and Structures"Fracture of Mateials and Structures from Micro to Macro Scale, 2010, DVM, Berlin. |
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