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The effect of temperature on motion of misfit dislocation in the γ/γ' interface of a Ni-based superalloy is studied in periodic simulation cells subjected to an applied shear stress. The simulation results show that no matter what temperature is, the motion of misfit dislocation occurs through the nucleation and the propagation of the double kink; at low temperature, the interaction of the misfit dislocation facilitates the motion of the misfit dislocation; on the contrary, at higher temperature, it can obstruct the motion of the misfit dislocation, and improves the mechanical properties of nickel-base superalloys.
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Keywords:
- Ni-based single superalloys /
- interface /
- misfit dislocation /
- molecular dynamics simulation
[1] Khan T, Caron P 1986 Mater. Science and Technology 2 486
[2] Harris K, Erickson G L, Schwer R E 1986 High Temperature Alloys for Gas Turbines and Other applicaions edited 20 709
[3] Erickson G L in Superalloys 1996 edited by R D Kissinger, (The Minerals, Metals and Materials Society, Warrendale USA 1996) p35
[4] Lahrman D F, Field R D, Darolia R, Fraser H L 1988 Acta Metal. 36 1309
[5] Gabb T P, Draper S L, Hull D R, Nathal M V 1989 Mater. Sci. Eng. A 118 59
[6] Zhu T, Wang C Y 2005 Phys. Rev. B 72 014111
[7] Wen Y H, Zhu T, Cao L X, Wang C Y 2003 Acta Phys. Sin. 52 2520 (in Chinese) [文玉华、朱 弢、曹立霞、王崇愚 2003 52 2520]
[8] Geng C Y, Wang C Y, Zhu T 2005 Acta Phys. Sin. 54 1320 (in Chinese) [耿翠玉、王崇愚、朱 弢 2005 54 1320]
[9] Hirth J P, Lothe J 1982 Theory of dislocations (Wiley, New York, 1982)
[10] Chang J P, Cai W, Bulatov V V, Sidney Yip 2001 Mater. Sic. Eng. A 309 160
[11] Chang J P, Cai W, Bulatov V V, Sidney Yip 2002 Computational Materials Science 23 111
[12] Jaime Marian, Cai W, Bulatov V V 2004 Nature Mater 3 158
[13] Xie H X, Wang C Y, Yu T 2009 Modelling Simul. Mater. Sci. Eng. 17 055007
[14] Zhu T, Wang C Y 2006 Chin. Phys. 15 1009
[15] Chen L Q, Wang C Y, Yu T 2008 Chin. Phys. B 17 1674
[16] Zhang Y,Wanderka N,Schumacher G,Schneider R W, Neumann W 2000 Acta Mater 48 2787
[17] Voter A F, Chen S P 1987 High Temperature Ordered Intermetallic Alloys (MRS Symposia Proceedings No.82) ed R W Siegel (Pittsburgh: Materials Research Society) p175
[18] Mao W, Lin D L 1997 Acta Materialia 45 1005
[19] Rey C, Garcia-Rodeja J, Gallego L J 1996 Phys. Rev. B 54 2942
[20] Farkas D, Roqueta D, Vilette A, Ternes K 1996 Modell. Simul. Mater. Sci. Eng. 4 359
[21] Xie H X, Wang C Y, Yu T, Du J P 2009 Chin. Phys. B 18 1674
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[1] Khan T, Caron P 1986 Mater. Science and Technology 2 486
[2] Harris K, Erickson G L, Schwer R E 1986 High Temperature Alloys for Gas Turbines and Other applicaions edited 20 709
[3] Erickson G L in Superalloys 1996 edited by R D Kissinger, (The Minerals, Metals and Materials Society, Warrendale USA 1996) p35
[4] Lahrman D F, Field R D, Darolia R, Fraser H L 1988 Acta Metal. 36 1309
[5] Gabb T P, Draper S L, Hull D R, Nathal M V 1989 Mater. Sci. Eng. A 118 59
[6] Zhu T, Wang C Y 2005 Phys. Rev. B 72 014111
[7] Wen Y H, Zhu T, Cao L X, Wang C Y 2003 Acta Phys. Sin. 52 2520 (in Chinese) [文玉华、朱 弢、曹立霞、王崇愚 2003 52 2520]
[8] Geng C Y, Wang C Y, Zhu T 2005 Acta Phys. Sin. 54 1320 (in Chinese) [耿翠玉、王崇愚、朱 弢 2005 54 1320]
[9] Hirth J P, Lothe J 1982 Theory of dislocations (Wiley, New York, 1982)
[10] Chang J P, Cai W, Bulatov V V, Sidney Yip 2001 Mater. Sic. Eng. A 309 160
[11] Chang J P, Cai W, Bulatov V V, Sidney Yip 2002 Computational Materials Science 23 111
[12] Jaime Marian, Cai W, Bulatov V V 2004 Nature Mater 3 158
[13] Xie H X, Wang C Y, Yu T 2009 Modelling Simul. Mater. Sci. Eng. 17 055007
[14] Zhu T, Wang C Y 2006 Chin. Phys. 15 1009
[15] Chen L Q, Wang C Y, Yu T 2008 Chin. Phys. B 17 1674
[16] Zhang Y,Wanderka N,Schumacher G,Schneider R W, Neumann W 2000 Acta Mater 48 2787
[17] Voter A F, Chen S P 1987 High Temperature Ordered Intermetallic Alloys (MRS Symposia Proceedings No.82) ed R W Siegel (Pittsburgh: Materials Research Society) p175
[18] Mao W, Lin D L 1997 Acta Materialia 45 1005
[19] Rey C, Garcia-Rodeja J, Gallego L J 1996 Phys. Rev. B 54 2942
[20] Farkas D, Roqueta D, Vilette A, Ternes K 1996 Modell. Simul. Mater. Sci. Eng. 4 359
[21] Xie H X, Wang C Y, Yu T, Du J P 2009 Chin. Phys. B 18 1674
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