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Mechanical stability of austenite grains towards martensitic transformation in a TRIP-assisted duplex stainless steel
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering. KTH Royal institute of technology.
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering.ORCID iD: 0000-0003-1102-4342
(English)Manuscript (preprint) (Other academic)
Abstract [en]

The mechanical behavior of austenite was investigated in a TRIP duplex stainless steel (TDSS). Uniaxial tensile testing was performed and the microstructure was characterized using electron backscatter diffraction. A strong <111> texture develops along the loading direction (LD) due to preferential martensitic transformation and grain rotation. Austenite oriented with <112> and <100> parallel to the LD transform preferentially, since multiple slip planes activate for these orientations. These observations agree with observations in single-phase austenitic alloys with low stacking fault energy. In conclusion, it is indicated that the stability of austenite grains towards martensitic transformation is mainly dictated by crystallographic orientation.

National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:kth:diva-228050OAI: oai:DiVA.org:kth-228050DiVA, id: diva2:1206412
Note

QC 20180522

Available from: 2018-05-16 Created: 2018-05-16 Last updated: 2018-05-22Bibliographically approved
In thesis
1. Martensitic Transformation in Stainless Steels
Open this publication in new window or tab >>Martensitic Transformation in Stainless Steels
2018 (English)Doctoral thesis, comprehensive summary (Other academic)
Place, publisher, year, edition, pages
KTH Royal Institute of Technology, 2018. p. 62
Series
TRITA-ITM-AVL ; 2018:28
National Category
Metallurgy and Metallic Materials
Identifiers
urn:nbn:se:kth:diva-228054 (URN)978-91-7729-786-4 (ISBN)
Public defence
2018-06-14, Kollegiesalen, Brinellvägen 8, Stockholm, 10:00 (English)
Opponent
Supervisors
Available from: 2018-05-17 Created: 2018-05-16 Last updated: 2018-05-17Bibliographically approved

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Tian, YeHedström, Peter

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CiteExportLink to record
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Citation style
  • apa
  • harvard1
  • ieee
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  • vancouver
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More styles
Language
  • de-DE
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  • fi-FI
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Output format
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