Hostname: page-component-78c5997874-dh8gc Total loading time: 0 Render date: 2024-11-20T03:24:13.395Z Has data issue: false hasContentIssue false
  • English
  • Français

Dislocation Density Based Crystal Plasticity Finite Element Simulation of Alpha-Iron

Published online by Cambridge University Press:  21 February 2012

Zhe Leng  and
David P. Field
Zhe Leng
Affiliation:
School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164-2920, U.S.A.
David P. Field
Affiliation:
School of Mechanical and Materials Engineering, Washington State University, Pullman, WA, 99164-2920, U.S.A.
Get access

Abstract

Ferritic/martensitic steels such as HT9 steel, is used for structural components in nuclear power plants because of its high strength and good swelling resistance. Understanding the mechanical behavior of these steels is quite important, since it will affect the strength and the life of the component. In this study, a dislocation density based crystal plasticity finite element model is developed in which different types of dislocation evolves on the activated 12 slip systems in alpha-iron. The dislocation evolves in the form of closed loop and the dislocation density is tracked as internal state variable, the generation and annihilation of dislocations are modeled based on the dislocation interaction laws. The plastic flow is calculated based on the dislocation densities and a generalized Taylor equation is used as the hardening law, and the hardening is assumed to be isotropic in this study. The evolution of polycrystal texture of alpha-iron is presented in the form of pole figures, which indicate the orientation spread and agree with the experimental result. The model also indicates the inhomogeneous dislocation distribution and stress concentration at the grain boundaries.

Keywords

grain boundariescrystallographic structuredislocations
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1383: Symposium A – Material Challenges in Current and Future Nuclear Technologies , 2012 , mrsf11-1383-a12-08
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] Gelles, David S.. D, Sc. and Kurtz, Richard J., Journal of ASTM international, July/August 2005, Vol2. No.7 Google Scholar
[2] Taylor, GI. Journal of Institute of Metals 1938;62:307.Google Scholar
[3] Mandel, J. International Journal of Solids and Structures 1965;1:273.Google Scholar
[4] Hill, R. Journal of Mechanics and Physics of Solids 1966;14:95.Google Scholar
[5] Asaro, R. J. and Rice, J. R.. J. Mech. Phys. Solids, 25:309–338, 1977.Google Scholar
[6] Asaro, R. J.. ASME J. Appl. Mech., 50:921–934, 1983.Google Scholar
[7] Asaro, R. J.. Adv. Appl. Mech., 23:1–115, 1983.Google Scholar
[8] Park, S.J., Han, H.N., Oh, K.H., Raabe, D. and Kim, J.K., Mater Sci Forum, 408-4 (2002), pp. 371–376.Google Scholar
[9] Evers, L.P., Brekelmans, W.A.M. and Geers, M.G.D., J Mech Phys Solids, 52 10 (2004), pp. 2379–2401.Google Scholar
[10] Liu, W.H., Zhang, X.M., Tang, J.G. and Du, Y., Comput Mater Sci, 40 (2007), pp. 130–139.Google Scholar
[11] Ma, A, Roters, F. Acta Mater 2004;52(12):3603–12.Google Scholar
[12] Ma, A, Roters, F, Raabe, D. Acta Mater 2006;54:2169–79.Google Scholar
[13] Asaro, RJ, Rice, J JR.. Mech. Phys. Solids 1977;25:309.Google Scholar
[14] Lee, Y.J., Subhash, G., Ravichandran, G. International Journal of Plasticity 15 (1999) 625–645 Google Scholar
[15] Lee, M.G., Wang, J. and Anderson, P.M., Mater Sci Eng A, 463 (2007), pp. 263–270.Google Scholar
[16] Xie, C.L., Ghosh, S., Groeber, M. Journal of Engineering Materials and Technology Oct. 2004, Vol. 126 339 Google Scholar
[17] Yalcinkaya, T., Brekelmans, W.A.M., Geers, M.G.D.. Modelling Simul. Mater. Sci. Engng.16(2008)085007(16pp)Google Scholar
[18] Kothari, M, Anand, L., J.Mech.Phys.SolidsVol. 46.No.1.pp51–83.Google Scholar
[19] Arsenlis, A., Tang, M, Modelling Simul. Mater. Sci. Eng.11(2003)251–264 Google Scholar
[20] Ma, A, Roters, F, Raabe, D. Acta Mater 2006;54:2181–94.Google Scholar
[21] Ma, A, Roters, F, Raabe, D. International Journal of Solids and Structures 2006;43:7287.Google Scholar
[22] Roters, F, Raabe, D, Gottstein, G. Acta Materialia 2000;48:4181 Google Scholar
[23] Cheong, KS, Busso, EP, Arsenlis, A. International Journal of Plasticity 2005;21:1797.Google Scholar
[24] Evers, LP, Parks, DM, Brekelmans, WAM, Geers, MGD. Journal of Mechanics and Physics of Solids 2002;50:2403.Google Scholar
[25] Arsenlis, A, Parks, DM. J. Mech. Phys. Solids 2002;50:1979–2009.Google Scholar
[26] Arsenlis, A, Parks, DM, Becker, R, Bulatov, VV. J. Mech. Phys. Solids 2004;52:1213.Google Scholar
[27] Alankar, Alankar, Mastorakos, Ioannis N., Field, David P., Acta Materialia, Volume 57, Issue 19, November 2009, Pages 5936–5946.Google Scholar
[28] Alankar, Alankar, Eisenlohr, Philip, Raabe, Dierk, Acta Materialia, Volume 59, Issue 18, October 2011, Pages 7003–7009.Google Scholar
[29] Meissonnier, FT, Busso, EP, O’Dowd, NP. International Journal of Plasticity 2001;17:601.Google Scholar