TY - GEN
T1 - Molecular dynamics simulation of interaction between screw dislocation and copper precipitate in iron
AU - Takahashi, Akiyuki
AU - Aoki, Yuji
AU - Kikuchi, Masanori
N1 - Copyright:
Copyright 2020 Elsevier B.V., All rights reserved.
PY - 2008
Y1 - 2008
N2 - This paper provides the results of the MD simulations of the interaction between a screw dislocation and a copper precipitate in iron. From the results, the screw dislocation has an attractive interaction with the copper precipitate. Also, the dependence of the Critical Resolved Shear Stress (CRSS) for the screw dislocation to break away from the copper precipitate on the size of the precipitate and temperature is studied. Finally, the CRSS obtained by the MD simulations is modeled statistically using a Russel-Brown model. Then we found that an addition of the Peierls stress, which is calculated by the MD simulations, to the Russel-Brown model gives a good prediction of the CRSS.
AB - This paper provides the results of the MD simulations of the interaction between a screw dislocation and a copper precipitate in iron. From the results, the screw dislocation has an attractive interaction with the copper precipitate. Also, the dependence of the Critical Resolved Shear Stress (CRSS) for the screw dislocation to break away from the copper precipitate on the size of the precipitate and temperature is studied. Finally, the CRSS obtained by the MD simulations is modeled statistically using a Russel-Brown model. Then we found that an addition of the Peierls stress, which is calculated by the MD simulations, to the Russel-Brown model gives a good prediction of the CRSS.
KW - Critical resolved shear stress
KW - Molecular dynamics
KW - Precipitate
KW - Screw dislocation
KW - Statistical modeling
UR - http://www.scopus.com/inward/record.url?scp=45749089360&partnerID=8YFLogxK
U2 - 10.4028/www.scientific.net/amr.33-37.895
DO - 10.4028/www.scientific.net/amr.33-37.895
M3 - Conference contribution
AN - SCOPUS:45749089360
SN - 0878493999
SN - 9780878493999
T3 - Advanced Materials Research
SP - 895
EP - 900
BT - Advances in Fracture and Materials Behavior - Selected, peer reviewed papers of the Seventh International Conference on Fracture and Strength of Solids (FEOFS2007)
PB - Trans Tech Publications
T2 - 7th International Conference on Fracture and Strength of Solids, FEOFS 2007
Y2 - 27 August 2007 through 29 August 2007
ER -