Effect of H impurity on misfit dislocation in Ni-based single-crystal superalloy: molecular dynamic simulations
Yu Tao(于涛)a)†, Xie Hong-Xian(谢红献)a)c), and Wang Chong-Yu(王崇愚)a)b)
a. Central Iron and Steel Research Institute, Beijing 100081, China;
b. Department of Physics, Tsinghua University, Beijing 100084, China;
c. School of Mechanical Engineering, Hebei University of Technology, Tianjin 300132, China
Abstract The effect of H impurity on the misfit dislocation in Ni-based single-crystal superalloy is investigated using the molecular dynamic simulation. It includes the site preferences of H impurity in single crystals Ni and Ni3Al, the interaction between H impurity and the misfit dislocation and the effect of H impurity on the moving misfit dislocation. The calculated energies and simulation results show that the misfit dislocation attracts H impurity which is located at the interface and Ni3Al and H impurity on the glide plane can obstruct the glide of misfit dislocation, which is beneficial to improving the mechanical properties of Ni based superalloys.
Fund: Project supported by the National Basic Research Program of China (Grant No. 2011CB606402) and the National Natural Science Foundation of China (Grant No. 51071091).
Yu Tao(于涛), Xie Hong-Xian(谢红献), and Wang Chong-Yu(王崇愚) Effect of H impurity on misfit dislocation in Ni-based single-crystal superalloy: molecular dynamic simulations 2012 Chin. Phys. B 21 026104
[1]
Ross E W and Sims C T 1987 “Nickel-Base Alloys”, in: Sims C T, Stoloff N S and Hagel W C eds. Superalloy II (High Temperature Materials for Aerospace and Industrial Power) (New York: John Wiley & Sons) p. 97
[2]
Pollock T M and Argon A S 1992 Acta Metall. Mater. 40 1
[3]
Nabarro F R N and Villiers H L 1995 The Physics of Creep (London: Taylor & Francis)
[4]
Anton D L in: Westbrook J H and Fleischer R L eds. 1994 Intermetallic Compounds (New York: Wiley) 2 3
[5]
Mirkin I L and Kancheev O D 1967 Met. Sci. Heat Treat. 1-2 10
[6]
Chen K, Zhao L R and John S Tse 2004 Mater. Sci. Eng. A 365 80
[7]
Chen K, Zhao L R and John S Tse 2003 Mater. Sci. Eng. A 360 197
[8]
Yashiro K, Naitob M and Tomitac Y 2002 Int. J. Mech. Sci. 44 1845
[9]
Pollock T M and Argon A S 1992 Acta Metall. Mater. 40 1
[10]
Socrate S and Parks D M 1993 Acta Metall. Mater. 41 2185
[11]
Lahrman D F, Field R D, Darolia R D and Fraser H L 1988 Acta Metal. 36 1309
[12]
Gabb T P, Draper S L, Hull D R and Nathal M V 1989 Mater. Sci. Eng. A 118 59
[13]
Zhu T and Wang C Y 2005 Phys. Rev. B 72 014111
[14]
Zhang J X, Murakumo T, Koizumi Y, Kobayashi T and Harada H 2003 Acta Mater. 51 5073
[15]
Xie H X, Wang C Y and Yu T 2009 Modelling Simul. Mater. Sci. Eng. 17 055007
[16]
Beachem C D 1972 Metall. Trans. 3 437
[17]
Lynch S P 1988 Acta Metall. 36 2639
[18]
Birnbaum H K and Sofronis P 1994 Mater. Sci. Eng. A 176 191
[19]
Angelo J E, Moody N R and Baskes M I 1995 Modelling Simul. Mater. Sci. Eng. 3 289
[20]
Baskes M I, Sha X, Angelo J E and Moody N R 1997 Modelling Simul. Mater. Sci. Eng. 5 651
[21]
Baskes M I, Angelo J E and Moody N R in: Thompson A W and Moody N R eds. 1996 Hydrogen Effects in Materials (Warrendale, PA: The Minerals, Metals and Materials Society) p. 77
[22]
Wen M, Fukuyama S and Yokogawa K 2004 Phys. Rev. B 69 174108
[23]
Wen M, Fukuyama S and Yokogawa K 2007 Phys. Rev. B 75 144110
[24]
Zhu T, Wang C Y and Gan Y 2009 Acta Phys. Sin. 58 156 (in Chinese)
[25]
Xie H X, Yu T and Liu B 2011 Acta Phy. Sin. 60 046104 (in Chinese)
[26]
Allen M P and Tildesley D J 1987 Computer Simulation of Liquids (New York: Oxford University Press) p. 83
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