scholarly journals The effect of stress on the cross-slip energy in face-centered cubic metals: A study using dislocation dynamics simulations and line tension models

2021 ◽  
Vol 148 ◽  
pp. 104281
Author(s):  
M. Longsworth ◽  
M. Fivel
Keyword(s):  
Line Tension ◽  
Cross Slip ◽  
Dislocation Dynamics ◽  
Face Centered Cubic ◽  
Cubic Metals ◽  
The Cross ◽  
Face Centered ◽  
Dynamics Simulations

Mechanism transition of cross slip with stress and temperature in face-centered cubic metals

2020 ◽  
Vol 57 ◽  
pp. 159-171
Author(s):  
K.Q. Li ◽  
Z.J. Zhang ◽  
J.X. Yan ◽  
J.B. Yang ◽  
Z.F. Zhang
Keyword(s):  
Cross Slip ◽  
Face Centered Cubic ◽  
Cubic Metals ◽  
Mechanism Transition ◽  
Face Centered

Mechanisms of Cu Columns Growth

2004 ◽  
Vol 849 ◽  
Author(s):  
Jian Wang ◽  
Hanchen Huang
Keyword(s):  
Molecular Dynamics ◽  
Diffusion Barriers ◽  
Face Centered Cubic ◽  
Sputtering Deposition ◽  
Cubic Metals ◽  
Face Centered ◽  
Dynamics Simulations ◽  
Zigzag Shape ◽  
Formation Energies

ABSTRACTThe Cu <111> columns, which are formed during magnetron sputtering deposition, are faceted on the top and zigzag on sides. Our numerical results of large facet-facet diffusion barriers offer an explanation of the facet dimension. Based on the stacking fault formation energies of various face-centered-cubic metals, we suggest that the zigzag shape of Cu <111> columns is a result of deposition twins. Our molecular dynamics simulations indeed confirm this suggestion. Further, the dynamics simulations reveal the transient role of {100} facets, which facilitate the formation of {111} facets and disappear afterwards.

Voids in Irradiated Tungsten and Molybdenum

1969 ◽  
Vol 27 ◽  
pp. 190-191
Author(s):  
Robert C. Rau ◽  
Robert L. Ladd
Keyword(s):  
Melting Point ◽  
Fast Neutron ◽  
Neutron Irradiation ◽  
Elevated Temperatures ◽  
Irradiation Temperature ◽  
The Body ◽  
Face Centered Cubic ◽  
Body Centered Cubic ◽  
Cubic Metals ◽  
Face Centered

Recent studies have shown the presence of voids in several face-centered cubic metals after neutron irradiation at elevated temperatures. These voids were found when the irradiation temperature was above 0.3 Tm where Tm is the absolute melting point, and were ascribed to the agglomeration of lattice vacancies resulting from fast neutron generated displacement cascades. The present paper reports the existence of similar voids in the body-centered cubic metals tungsten and molybdenum.

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