Abstract
The influence of weld-simulated heat treatments of 9 to 12 pct steels is evaluated by a fundamental model for creep. The heat-affected microstructure is predicted by considering particle coarsening, particle dissolution, and subgrain coarsening. Particle coarsening is predicted for a multicomponent system, showing significant M23C6 coarsening in the bcc matrix. Dissolution simulations of MX and M23C6 are performed by considering a size distribution of particles, indicating that the smallest particles can be dissolved already at relatively low welding temperatures. Recovery in dislocation networks will take place due to the coarser particles. Creep rate modeling is performed based on the heat-affected microstructure, showing strength reduction of weld-simulated material by 12 pct at 1123 K (850 °C) and 30 pct at 1173 K (900 °C). The main cause of this degradation is believed to be the loss of the smallest carbonitrides.
Similar content being viewed by others
References
I.J. Perrin and J.D. Fishburn: Creep and Fracture in High Temperature Components—Design And Life Assessment Issues, DEStech Publications Inc., Lancaster, PA, 2005, pp. 46–30.
D.J. Allen, B. Harvey, and S.J. Brett: Int. J. Press. Vess. Pip., 2007, vol. 84, pp. 104–13.
J.A. Francis, W. Mazur, and H.K.D.H. Bhadeshia: Mater. Sci. Technol., 2006, vol. 22, pp. 1387–94.
M.E. Abd El-Azim, A.M. Nasreldin, G. Zies, and A. Klenk: Mater. Sci. Technol., 2005, vol. 21, pp. 779–90.
K. Laha, K.S. Chandrdravathi, P. Parameswaran, K. Bhanu Sankara Rao, and S.L. Mannan: Metall. Mater. Trans. A, 2007, vol. 38A, pp. 58–68.
J. Hald: Steel Res., 1996, vol. 67, pp. 369–74.
L. Korcakova: Doctoral Thesis, Technical University of Denmark, Kgs. Lyngby, Denmark, 2002.
P. Polcik, T. Sailer, W. Blum, S. Straub, J. Buršík, and A. Orlová: Mater. Sci. Eng., 1999, vol. A260, pp. 252–59.
G. Eggeler, A. Ramteke, M. Coleman, B. Chew, G. Peter, A. Burblies, J. Hald, C. Jefferey, J. Rantala, M. deWitte, and R. Mohrmann: Int. J. Press. Vess. Pip., 1994, vol. 60, pp. 237–57.
D. Jandová, J. Kasl, and V. Kanta: Creep & Fracture in High Temperature Components—Design & Life Assessment, 2nd Int. ECCC Conf., Empa, Dübendorf, Switzerland, Apr. 21–23, 2009.
T. Watanabe, M. Tabuchi, M. Yamazaki, H. Hongo, and T. Tanabe: Int. J. Press. Vess. Pip., 2006, vol. 83, pp. 61–71.
K. Maruyama, K. Sawada, and J.-I. Koike: ISIJ Int., 2001, vol. 41, pp. 641–53.
K. Stiller, H.O. Andrén, and M. Andersson: Mater. Sci. Technol., 2008, vol. 24, pp. 633–40.
H. Danielsen and J. Hald: Energy Mater., 2006, vol. 1, pp. 49–57.
A. Golpayegani, H.-O. Andrén, H. Danielsen, and J. Hald: Mater. Sci. Eng., 2008, vol. A489, pp. 310–18.
B. Sundman, B. Jansson, and J.O. Andersson: CALPHAD, 1985, vol. 9, pp. 153–90.
J. Eliasson, Å. Gustafson, and R. Sandström: Key Eng. Mater., 2000, vols. 171–174, pp. 277–84.
K. Suzuki, S. Kumai, Y. Toda, H. Kushima, and K. Kimura: ISIJ Int., 2003, vol. 43, pp. 1089–94.
P.J. Ennis, A. Zielinska-Lipiecz, O. Wachter, and A. Czyrska-Filemonowicz: Acta Mater., 1997, vol. 45, pp. 4901–07.
M. Hättestrand and H.-O. Andrén: Micron, 2001, vol. 32, pp. 789–97.
H. Magnusson and R. Sandström: Metall. Mater. Trans. A, 2007, vol. 38A, pp. 2428–34.
A Borgenstam, A. Engström, L. Höglund, and J. Ågren: Phase Equilib., 2000, vol. 21, pp. 269–80.
J. Ågren, M.T. Clavaguera-Mora, J. Golcheski, G. Inden, H. Kumar, and C. Sigli: CALPHAD, 2000, vol. 24, pp. 41–54.
R. Sandström: Acta Mater., 1977, vol. 25, pp. 905–11.
H. Magnusson, and R. Sandström: Metall. Mater. Trans. A, 2007, vol. 38A, pp. 2033–39.
M.E. Kassner and M.T. Pérez-Prado: Prog. Mater Sci., 2000, vol. 45, pp. 1–102.
H. Cerjak and P. Mayr: Creep-Resistant Steels, Woodhead Publishing Limited, Cambridge, England, pp. 472–503.
H. Magnusson and R. Sandström: Mater. Sci. Eng., A, 2009, vol. 527, pp. 118–25.
S.K. Albert, M. Matsui, T. Watanabe, H. Hongo, K. Kubo, and M. Tabuchi: ISIJ Int., 2002, vol. 42, pp. 1497–1504.
S. Spigarelli and E. Quadrini: Mater. Des., 2002, vol. 23, pp. 547–52.
K. Laha, K.S. Chandrdravathi, P. Parameswaran, and K. Bhanu Sankara Rao: Metall. Mater. Trans. A, 2009, vol. 40A, pp. 386–97.
Acknowledgments
This work was supported by the Swedish Foundation for Strategic Research (SSF) programmes CROX, “Mechanisms of creep and oxidation of high performance alloys,” and MATOP, “Development of tools for integrated optimisation of materials.”
Author information
Authors and Affiliations
Corresponding author
Additional information
Manuscript submitted February 5, 2010.
Rights and permissions
About this article
Cite this article
Magnusson, H., Sandström, R. Modeling Creep Strength of Welded 9 to 12 Pct Cr Steels. Metall Mater Trans A 41, 3340–3347 (2010). https://doi.org/10.1007/s11661-010-0449-2
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11661-010-0449-2