Hostname: page-component-8448b6f56d-c47g7 Total loading time: 0 Render date: 2024-04-19T05:15:09.559Z Has data issue: false hasContentIssue false
  • English
  • Français

Carbon Effect on Thermal Ageing Simulations in Ferrite Steels

Published online by Cambridge University Press:  13 June 2012

Fabio Nouchy ,
Antoine Claisse  and
Pär Olsson
Fabio Nouchy
Affiliation:
Reactor Physics, KTH, AlbaNova University Centre, 106 91 Stockholm, Sweden
Antoine Claisse
Affiliation:
Reactor Physics, KTH, AlbaNova University Centre, 106 91 Stockholm, Sweden
Pär Olsson
Affiliation:
Reactor Physics, KTH, AlbaNova University Centre, 106 91 Stockholm, Sweden
Get access

Abstract

Two major causes of hardening and subsequent embrittlement in ferrite steels are the spinodal decomposition of the binary Fe-Cr solid solution and the carbide formation due to the presence of carbon as foreign interstitial atoms. In the present work, simulations of the microstructure evolution due to thermal ageing are performed by means of a kinetic Monte Carlo code and using a state-of-the-art interatomic potential based on density functional theory (DFT) predictions and experimental data. The main issues concern the possibility to perform thermal ageing simulations in an acceptable computational time frame and to reproduce a realistic behavior of carbon kinetics and carbide formation. The simulations on the binary system show the microstructural evolution during thermal ageing and allowed to find an exponential trend related to the acceleration as a function of temperature. With the insertion of carbon in the model, the chromium precipitation tends to accelerate. The carbon clustering, analyzed separately, is faster with higher C concentrations and in lattices with segregated chromium.

Keywords

x-ray diffraction (XRD)dislocationsnucleation & growth
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1444: Symposium S/Y – Actinides and Nuclear Energy Materials , 2012 , mrss12-1444-s11-04
Copyright
Copyright © Materials Research Society 2012

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

1. Cui, Y. and Lundin, C.D., Mater. Sci. Eng. A 452, 284 (2007).Google Scholar
2. Auger, P. et al. ., J. Mater. Sci. Technol. 6, 301 (1990).Google Scholar
3. Bonny, G., Terentyev, D. and Malerba, L., Scr. Mater. 59, 1193 (2008).Google Scholar
4. Xiong, W. et al. ., Crit. Rev. Solid State Mater. Sci. 35, 125 (2010).Google Scholar
5. Novy, S., Pareige, P. and Pareige, C., J. Nucl. Mater. 384, 96 (2009).Google Scholar
6. Cahn, J.W. and Hilliard, J.E., J. Chem. Phys. 28-2, 258 (1958).Google Scholar
7. Lesko, A. and Navara, E., Mater. Charact. 36, 349 (1996).Google Scholar
8. Novy, S., PhD Thesis, Université de Rouen, 2009.Google Scholar
9. Wallenius, J. et al. ., Phys. Rev. B 69, 094103 (2004).Google Scholar
10. Erhart, P., Caro, A., Serrano de Caro, M. and Sadigh, B., Phys. Rev. B 77, 134206 (2008).Google Scholar
11. Pareige, C. et al. ., Acta Materialia 59, 2404 (2011).Google Scholar
12. Olsson, P. et al. ., Phys. Rev. B 72, 214119 (2005); ibid., 74, 229906 (2006).Google Scholar
13. Olsson, P., Domain, C. and Wallenius, J., Phys. Rev. B 75, 014110 (2007).Google Scholar
14. Henriksson, K.O.E., Sandberg, N. and Wallenius, J., Appl. Phys. Lett. 93, 191912 (2008).Google Scholar
15. Sandberg, N., Henriksson, K.O.E. and Wallenius, J., Phys. Rev. B 78, 094110 (2008).Google Scholar
16. Domain, C., Becquart, C.S., and Foct, J., Phys. Rev. B 69, 144112 (2004).Google Scholar
17. Domain, C., Becquart, C. S. and Malerba, L., J. Nucl. Mater. 335(1), 121 (2004).Google Scholar
18. Young, W.M. and Elcock, E.W., Proc. Phys. Soc. 89, 735 (1966).Google Scholar
19. Lifshitz, I.M. and Slyozov, V.V., J. Phys. Chem. Solids 19, 35 (1961).Google Scholar
20. Takaki, S. et al. ., Radiat. Eff. Defects Solids 79, 87 (1983).Google Scholar
21. Gendt, D., PhD. Thesis, Université de Paris, 2001.Google Scholar