Investigation of pre-existing pores in creep loaded 9Cr steel

Surya Deo Yadav, Joerdis Rosc, Bernhard Sartory, Roland Brunner, Bernhard Sonderegger, Christof Sommitsch, Maria Cecilia Poletti

Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschungBegutachtung

Abstract

Creep failure of materials under service conditions strongly rely on the formation and growth of cavities, encouraging the characterization and modelling of the cavitation process. In the present work pre-existing pores from manufacturing process are investigated in 9Cr steel creep loaded for up to 9000 hours. Scanning electron microscopy (SEM) is used for 2D analysis while Computer tomography (CT) is employed for 3D exploration. Nearest neighbours distances in 3D are calculated from 2D measurements and are decreasing with creep exposure time. The pore growth is studied applying a physical growth model, and experimental results are compared with numerical simulation. From this research it is deduced that damage occurs by agglomeration and growth of pre-existing cavities. The developed model can predict the growth of pores as a function of temperature and load at service.

Originalspracheenglisch
Titel3DMS 2014 - Proceedings of the 2nd International Congress on 3D Materials Science
ErscheinungsortHoboken, NJ, USA
Herausgeber (Verlag)John Wiley & Sons, Inc
Seiten85-90
Seitenumfang6
ISBN (Print)9781118945452
DOIs
PublikationsstatusVeröffentlicht - 2014
Veranstaltung2nd International Congress on 3D Materials Science, 3DMS 2014 - Annecy, Frankreich
Dauer: 29 Jun 20142 Jul 2014

Konferenz

Konferenz2nd International Congress on 3D Materials Science, 3DMS 2014
LandFrankreich
OrtAnnecy
Zeitraum29/06/142/07/14

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Steel
Creep
Cavitation
Tomography
Agglomeration
Scanning electron microscopy
Computer simulation
Temperature

Schlagwörter

    ASJC Scopus subject areas

    • !!Mechanics of Materials
    • !!Materials Science(all)

    Dies zitieren

    Yadav, S. D., Rosc, J., Sartory, B., Brunner, R., Sonderegger, B., Sommitsch, C., & Poletti, M. C. (2014). Investigation of pre-existing pores in creep loaded 9Cr steel. in 3DMS 2014 - Proceedings of the 2nd International Congress on 3D Materials Science (S. 85-90). Hoboken, NJ, USA: John Wiley & Sons, Inc. https://doi.org/10.1002/9781118990278.ch14

    Investigation of pre-existing pores in creep loaded 9Cr steel. / Yadav, Surya Deo; Rosc, Joerdis; Sartory, Bernhard; Brunner, Roland; Sonderegger, Bernhard; Sommitsch, Christof; Poletti, Maria Cecilia.

    3DMS 2014 - Proceedings of the 2nd International Congress on 3D Materials Science. Hoboken, NJ, USA : John Wiley & Sons, Inc, 2014. S. 85-90.

    Publikation: Beitrag in Buch/Bericht/KonferenzbandBeitrag in einem KonferenzbandForschungBegutachtung

    Yadav, SD, Rosc, J, Sartory, B, Brunner, R, Sonderegger, B, Sommitsch, C & Poletti, MC 2014, Investigation of pre-existing pores in creep loaded 9Cr steel. in 3DMS 2014 - Proceedings of the 2nd International Congress on 3D Materials Science. John Wiley & Sons, Inc, Hoboken, NJ, USA, S. 85-90, Annecy, Frankreich, 29/06/14. https://doi.org/10.1002/9781118990278.ch14
    Yadav SD, Rosc J, Sartory B, Brunner R, Sonderegger B, Sommitsch C et al. Investigation of pre-existing pores in creep loaded 9Cr steel. in 3DMS 2014 - Proceedings of the 2nd International Congress on 3D Materials Science. Hoboken, NJ, USA: John Wiley & Sons, Inc. 2014. S. 85-90 https://doi.org/10.1002/9781118990278.ch14
    Yadav, Surya Deo ; Rosc, Joerdis ; Sartory, Bernhard ; Brunner, Roland ; Sonderegger, Bernhard ; Sommitsch, Christof ; Poletti, Maria Cecilia. / Investigation of pre-existing pores in creep loaded 9Cr steel. 3DMS 2014 - Proceedings of the 2nd International Congress on 3D Materials Science. Hoboken, NJ, USA : John Wiley & Sons, Inc, 2014. S. 85-90
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    AU - Sommitsch, Christof

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