Effect of interfacial structural phase transitions on the coupled motion of grain boundaries: A molecular dynamics study

被引:50
作者
Frolov, T. [1 ]
机构
[1] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
关键词
MOBILITY; SIMULATION; MIGRATION;
D O I
10.1063/1.4880715
中图分类号
O59 [应用物理学];
学科分类号
摘要
In this work, the coupled motion of two different phases of Sigma 5(210)[001] grain boundaries was investigated by molecular dynamics simulations of fcc Cu. The effect of interfacial structural phase transitions is shown to have a profound effect on both the shear strength and the nature of the coupled motion. Specifically, the motion of the two different phases is described by ideal coupling factors beta(< 100 >) and beta(< 110 >) that have different magnitudes and even signs. Additionally, the shear strength for the two interfacial phases is observed to differ by up to 40% at the lowest temperatures simulated. The study demonstrates that grain boundary phases transitions may have strong effects on the kinetics of microstructural evolution. (C) 2014 AIP Publishing LLC.
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页数:3
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共 26 条
[1]   Influence of point defects on grain boundary mobility in bcc tungsten [J].
Borovikov, Valery ;
Tang, Xian-Zhu ;
Perez, Danny ;
Bai, Xian-Ming ;
Uberuaga, Blas P. ;
Voter, Arthur F. .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2013, 25 (03)
[2]   THERMODYNAMIC CRITERIA FOR GRAIN-BOUNDARY MELTING - A MOLECULAR-DYNAMICS STUDY [J].
BROUGHTON, JQ ;
GILMER, GH .
PHYSICAL REVIEW LETTERS, 1986, 56 (25) :2692-2695
[3]   Duality of dislocation content of grain boundaries [J].
Cahn, J. W. ;
Mishin, Y. ;
Suzuki, A. .
PHILOSOPHICAL MAGAZINE, 2006, 86 (25-26) :3965-3980
[4]   Coupling grain boundary motion to shear deformation [J].
Cahn, John W. ;
Mishin, Yuri ;
Suzuki, Akira .
ACTA MATERIALIA, 2006, 54 (19) :4953-4975
[5]   Grain boundary complexions [J].
Cantwell, Patrick R. ;
Tang, Ming ;
Dillon, Shen J. ;
Luo, Jian ;
Rohrer, Gregory S. ;
Harmer, Martin P. .
ACTA MATERIALIA, 2014, 62 :1-48
[6]   Complexion: A new concept for kinetic engineering in materials science [J].
Dillon, Shen J. ;
Tang, Ming ;
Carter, W. Craig ;
Harmer, Martin P. .
ACTA MATERIALIA, 2007, 55 (18) :6208-6218
[7]   EVALUATION OF HARMONIC METHODS FOR CALCULATING THE FREE-ENERGY OF DEFECTS IN SOLIDS [J].
FOILES, SM .
PHYSICAL REVIEW B, 1994, 49 (21) :14930-14938
[8]   Computation of grain boundary stiffness and mobility from boundary fluctuations [J].
Foiles, Stephen M. ;
Hoyt, J. J. .
ACTA MATERIALIA, 2006, 54 (12) :3351-3357
[9]   Temperature dependence of grain boundary free energy and elastic constants [J].
Foiles, Stephen M. .
SCRIPTA MATERIALIA, 2010, 62 (05) :231-234
[10]   Effect of Interface Phase Transformations on Diffusion and Segregation in High-Angle Grain Boundaries [J].
Frolov, T. ;
Divinski, S. V. ;
Asta, M. ;
Mishin, Y. .
PHYSICAL REVIEW LETTERS, 2013, 110 (25)