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Creep, low cycle fatigue and creep-fatigue properties of a modified HR3C
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology.ORCID iD: 0000-0002-8348-1633
KTH, School of Industrial Engineering and Management (ITM), Materials Science and Engineering, Materials Technology.ORCID iD: 0000-0002-8494-3983
2016 (English)In: 21ST EUROPEAN CONFERENCE ON FRACTURE, (ECF21), Elsevier, 2016, p. 871-878Conference paper, Published paper (Refereed)
Abstract [en]

Creep, low cycle fatigue (LCF) and creep fatigue tests have been conducted for modified HR3C (25Cr20NiNbN) at high temperatures ranging of 650-750 degrees C. Both LCF and creep fatigue test results could be described with the Coffin-Manson relationship. The number of cycles to failure in the creep fatigue tests was more than one order of magnitude lower compared with LCF. The effect of the total hold time in tension (the total creep time) was compared to creep rupture data. The creep fatigue results were in reasonable agreement with the creep tests. The short creep fatigue lives may be due to the low creep ductility which was found in the creep tests. Fractography showed that the rupture mode was intergranular. Cavities were observed at grain boundaries due to the fracture of the primary Z phase particles in both LCF and creep fatigue tests. In comparison to Sanicro 25, the modified HR3C showed better LCF properties.

Place, publisher, year, edition, pages
Elsevier, 2016. p. 871-878
Series
Procedia Structural Integrity, ISSN 2452-3216 ; 2
Keywords [en]
Low cycle fatigue, Creep fatigue, Creep, Austenitic stainless steels, HR3C
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:kth:diva-200041DOI: 10.1016/j.prostr.2016.06.112ISI: 000387976800111OAI: oai:DiVA.org:kth-200041DiVA, id: diva2:1068799
Conference
21st European Conference on Fracture (ECF), JUN 20-24, 2016, Catania, ITALY
Note

QC 20170126

Available from: 2017-01-26 Created: 2017-01-20 Last updated: 2017-01-26Bibliographically approved

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He, JunjingSandström, Rolf

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CiteExportLink to record
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  • apa
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