Numerical Study of the Kinetic Aspects of Fracture of Metal Nanocrystals

被引：0
作者：
I. F. Golovnev
E. I. Golovneva
机构：
[1] Russian Academy of Sciences,Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch
来源：
Physical Mesomechanics | 2019年 / 22卷
关键词：
molecular dynamics method; metal nanostructures; constant strain rate; fracture; temperature; mesoanalysis;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
This paper deals with the investigation of the temperature effect on the fracture of a metal nanostructure during constant-rate uniaxial deformation. The temperature varied within the range from 0 to 550 K, and the velocity of the movable grip varied from 50 to 500 m/s. It has been demonstrated that the temperature significantly affects both the macrocharacteristics of fracture (fracture site, the number of structural fragments, grip stresses) and the kinetic characteristics (time to maximum grip stresses, fracture time, mass transfer, and necking).
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页码：195 / 202
页数：7
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[1]  
Panin VE(2015)Basic Physical Meso-mechanics of Plastic Deformation and Fracture of Solids as Hierarchically Organized Nonlinear Systems Phys. Mesomech. 18 377-390
[2]  
Egorushkin VE(2016)Plastic Distortion as a Fundamental Mechanism in Nonlinear Mesomechanics of Plastic Deformation and Fracture Phys. Mesomech. 19 255-268
[3]  
Panin VE(2017)Scale Invariance of Structural Transformations in Plastically Deformed Nanostructured Solids Phys. Mesomech. 20 55-68
[4]  
Egorushkin VE(2008)Self-Organization of Plastic Shears in Localized Deformation Macrobands in the Neck of High-Strength Polycrystals, Its Role in Material Fracture under 9niaxial Tension Phys. Mesomech. 11 51-62
[5]  
Panin AV(2011)Temperature Effect on Ideal Shear Strength of Al and Cu Phys. Rev. B 84 224118-6519
[6]  
Chernyavskii AG(2011)Structural and Mechanical Properties of Partially Unzipped Carbon Nanotubes Phys. Rev. B 83 075410-187
[7]  
Panin VE(2010)Temperature and Strain-Rate Dependent Fracture Strength of Graphene J. Appl. Phys. 108 064321-231
[8]  
Panin AV(2011)Microstructure of Damage in Thermally Activated Fracture of Lennard-Jones Systems Phys. Rev. E 83 066108-179
[9]  
Pochivalov YuI(2007)Molecular Dynamics Simulation of Temperature and Strain Rate Effects on Elastic Properties of Bimetallic Pd-Pt Nanowires Phys. Rev. B 76 134117-45
[10]  
Elsukova TF(2009)Theoretical Investigation on the Influence of Temperature and Crystallographic Orientation on the Breaking Behavior of Copper Nanowire Phys. Chem. Chem. Phys. 11 6514-10
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