Dislocation Dissociation Strongly Influences on Frank–Read Source Nucleation and Microplasticy of Materials with Low Stacking Fault Energy
HUANG Min-Sheng1,2** , ZHU Ya-Xin1,2 , LI Zhen-Huan1,2
1 Department of Mechanics, Huazhong University of Science and Technology, Wuhan 4300742 Hubei Key Laboratory of Engineering Structural Analysis and Safety Assessment, Wuhan 430074
Abstract ：The influence of dislocation dissociation on the evolution of Frank–Read (F-R) sources is studied using a three-dimensional discrete dislocation dynamics simulation (3D-DDD). The classical Orowan nucleation stress and recently proposed Benzerga nucleation time models for F-R sources are improved. This work shows that it is necessary to introduce the dislocation dissociation scheme into 3D-DDD simulation, especially for simulations on micro-plasticity of small sized materials with low stacking fault energy.
收稿日期: 2013-11-14
出版日期: 2014-03-25
:
61.72.Lk
(Linear defects: dislocations, disclinations)
62.20.fq
(Plasticity and superplasticity)
07.05.Tp
(Computer modeling and simulation)
[1] Shimokawa T and Kitada S 2014 Mater. Trans. 55 58 1995 Model. Simul. Mater. Sci. Eng. 3 689 2002 Int. J. Plast. 18 1133 2004 Model. Simul. Mater. Sci. Eng. 12 159 1967 Philos. Mag. 15 1011 2008 Int. J. Plast. 24 1128 2013 J. Mech. Phys. Solids 61 2454 1999 Model. Simul. Mater. Sci. Eng. 7 479 1999 J. Comput. Aid. Mater. 6 157 2008 Model. Simul. Mater. Sci. Eng. 16 075002 2013 Acta Mater. 61 1469 2013 Comput. Mater. Sci. 70 178 Chin. Phys. B 2 352008 Scr. Mater. 58 775 2010 Mater. Sci. Eng. A 527 6244 2006 J. Mech. Phys. Solids 54 561 2006 Int. J. Plast. 22 713 1996 Mater. Sci. Eng. A 206 259 2008 J. Mech. Phys. Solids 56 869 2001 Mater. Sci. Eng. A 309 237 2006 Phys. Rev. 74 144108 1988 Philos. Mag. A 58 905 1959 Phys. Rev. 116 1113 2003 Science 300 1275 2012 Science 338 1448 2007 Appl. Phys. Lett. 90 121916
[1]
.
[2]
.
[3]
.
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2014, Vol. 31 
