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Assessment of creep rupture life of weldments of martensitic steels

  • Eberhard Roos , Karl Maile , Andreas Klenk and Mathias Bauer
Published/Copyright: June 11, 2013
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 99 Issue 4

Abstract

Martensitic steels are of major importance for modern high efficient power plants. Their long-term creep rupture characteristics are essential for the economic and reliable design of high temperature components. However, the weldments in such components have to be considered as a potential failure area under long-term creep loading as the heat affected zone of ferritic creep resistant materials (for example new martensitic steels) is exposed to significant microstructural changes due to the heat input during welding. Furthermore, the stress situation and multiaxiality of the stress state in the weld region changes permanently due to creep and relaxation. Evaluation therefore has to be based on experimental investigation that means uniaxial creep tests of crossweld creep specimens. The microstructrural characterisation of the heat affected zone and the comparison with the situation in the optimised base material has also to be taken into account. Heat affected zone simulation of specimens and the relevant experimental investigation deliver an important basis for the modelling of the stress – strain situation. All these aspects have to be combined in the inelastic computation in order to consider all relevant effects: the individual creep strength in the different regions of the heat affected zone as well as the influence of the subsequent state of stress multiaxiality.

The paper highlights recent and on-going research activities in Germany in this domain. It also demonstrates the importance of inelastic calculation for the design of welded pipes.

Keywords: Assessment of weldments; Martensitic steels; Weld strength factors; Advanced inelastic creep laws; Multiaxiality of the stress state
* Correspondence address, Prof. Dr.-Ing. habil. Eberhard Roos, Materialprüfungsanstalt Universität Stuttgart, Pfaffenwaldring 32, D-70569 Stuttgart, Germany, Tel.: +49 711 685 62 604, Fax: +49 711 685 63 144, E-mail:

References

[1] T.-U.Kern, K.H.Mayer, C.Berger, G.Zies, M.Schwienheer: 27. Vortragsveranstaltung FVHT, VDEH, 26. 11. 2004, Düsseldorf.Search in Google Scholar

[2] F.Abe: EPRI, Fourth International Conference on Advanced in Materials Technology for Fossil Power Plants, South Carolina, USA, 25–28. 10. 2004, pp. 273–283.Search in Google Scholar

[3] K.Sakuraya, H.Okada, F.Abe: EPRI, Fourth International Conference on Advanced in Materials Technology for Fossil Power Plants, South Carolina, USA, 25–28. 10. 2004, pp. 1325–1338.Search in Google Scholar

[4] F.Hofer, P.Warbichler, W.Grogger: Ultramicroscopy59 (1995) 15.10.1016/0304-3991(95)00015-SSearch in Google Scholar

[5] F.Hofer, W.Grogger, G.Kothleitner, P.Warbichler: Ultramicroscopy67 (1997) 83.10.1016/S0304-3991(96)00106-4Search in Google Scholar

[6] C.Scheu, F.Kauffmann, G.Zies, K.Maile, S.Straub, K.H.Mayer: Metallkunde06 (2005) 653–659.10.3139/146.101084Search in Google Scholar

[7] K.Maile, F.Kauffmann, A.Klenk, E.Roos, S.Straub, K.H.Mayer: EPRI, Fifth International Conference on Advances in Materials Technology for Fossil Power Plants, October 2007, Florida, USA.Search in Google Scholar

[8] K.Maile, E.Roos: Frontiers in Design of Materials (FDM 2005), IIT Chennai, India.Search in Google Scholar

[9] K.Maile: International Journal of Pressure Vessels and Piping84 (2007) 62–68.10.1016/j.ijpvp.2006.09.012Search in Google Scholar

[10] K.Maile, P.Seeliger: AVIF Forschungsvorhaben A152, Abschlussbericht, MPAStuttgart, 2004.Search in Google Scholar

[11] J.Schubert, A.Klenk, K.Maile: International Conference on Creep and Fracture in High Temperature Components – Design and Life Assessment Issues, European Creep Collaborative Committee (ECCC), IOM London, 12–14 September 2005.Search in Google Scholar

[12] H.Clausmeyer, K.Kussmaul, E.Roos: Appl. Mech. Rev. Vol. 44, 2, ASME, 1991.10.1115/1.3119495Search in Google Scholar

[13] A.Graham, K.F.A.Walles: Journal of The Iron and Steel Institute, 179 (1955) 104–121.Search in Google Scholar

[14] K.Maile, E.Roos: AVIF Forschungsvorhaben A221, Zwischenbericht MPAStuttgart, 2006.Search in Google Scholar

[15] K.Maile, E.Roos: AVIF Forschungsvorhaben A229, Abschlussbericht MPAStuttgart, 2007.Search in Google Scholar

Received: 2007-10-17
Accepted: 2008-1-18
Published Online: 2013-06-11
Published in Print: 2008-04-01

© 2008, Carl Hanser Verlag, München

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https://doi.org/10.3139/146.101652
Keywords for this article
Assessment of weldments; Martensitic steels; Weld strength factors; Advanced inelastic creep laws; Multiaxiality of the stress state

Articles in the same Issue

  1. Contents
  2. Contents
  3. Editorial
  4. Horst Cerjak – Emeritus Professor
  5. Review
  6. Calculation of crystallographic texture due to displacive transformations
  7. Basic
  8. Ferrite transformation from oxide–steel interface in HAZ-simulated C–Mn steel
  9. Influence of metastable tetragonal ZrO2-reinforcements on the properties of MoSi2-composites
  10. Joining strategies for open-porous metallic foams
  11. Precipitation behaviour of an Fe–Co–Mo-alloy during non-isothermal ageing
  12. Characterization of δ-phase in superalloy Allvac 718PlusTM
  13. Direct observation of phase transformations in the simulated heat-affected zone of a 9Cr martensitic steel
  14. Effect of boron on creep deformation behavior and microstructure evolution in 9% Cr steel at 650°C
  15. Effect of stress on the creep deformation of ASME Grade P92/T92 steels
  16. Applied
  17. Assessment of creep rupture life of weldments of martensitic steels
  18. Computational analysis of the precipitation kinetics in a complex tool steel
  19. Predicted precipitate back-stress and creep rupture strength of the advanced 9–12% Cr steel COST E2
  20. Compositional characterisation and thermodynamic modelling of nitride precipitates in a 12% Cr steel
  21. The L2 norm of the deviation between the measured and computed transient displacement field in a test weld
  22. Toward reliable calculations of heat and plastic flow during friction stir welding of Ti-6Al-4V alloy
  23. Notifications
  24. DGM News
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