The interaction mechanisms between dislocations and nano-precipitates in CuFe alloys: A molecular dynamic simulation

H Bao, H Xu, Y Li, H Bai, F Ma - International Journal of Plasticity, 2022 - Elsevier
Molecular dynamics (MD) simulations are employed to study the interaction mechanisms
between dislocations and nano-precipitates in CuFe alloys. On one hand, the critical shear …

Modeling of dislocation interaction with solutes, nano-precipitates and interfaces: A multiscale challenge

NG Kioussis, NM Ghoniem - Journal of Computational and …, 2010 - ingentaconnect.com
We review here several multiscale methods that we have developed to determine
dislocation properties and interactions in metals. The review includes:(1) dislocation core …

Nanoprecipitates induced dislocation pinning and multiplication strategy for designing high strength, plasticity and conductivity Cu alloys

H Yang, K Li, Y Bu, J Wu, Y Fang, L Meng, J Liu… - Scripta Materialia, 2021 - Elsevier
A nanoprecipitates induced dislocation pinning and multiplication strategy is proposed for
designing Cu alloys with high strength, plasticity and conductivity. That is, the …

Influence of nanoscale Cu precipitates in on dislocation core structure and strengthening

Z Chen, N Kioussis, N Ghoniem - Physical Review B—Condensed Matter and …, 2009 - APS
Atomistic simulations of the interaction of a screw dislocation in α-Fe with different size bcc
Cu precipitates suggest two plausible strengthening mechanisms. For precipitate diameters …

Combined Fe and O effects on microstructural evolution and strengthening in Cu–Fe nanocrystalline alloys

J Guo, Q Shao, O Renk, L Li, Y He, Z Zhang… - Materials Science and …, 2020 - Elsevier
Abstract Immiscible Cu–Fe composites with various compositions are mechanically alloyed
by means of high pressure torsion directly from blended powders and vacuum arc-melted …

Strengthening mechanisms of Fe nanoparticles for single crystal Cu–Fe alloy

G Shi, X Chen, H Jiang, Z Wang, H Tang… - Materials Science and …, 2015 - Elsevier
A single crystal Cu–Fe alloy with finely dispersed precipitate Fe nanoparticles was
fabricated in this study. The interface relationship of iron nanoparticle and copper matrix was …

Twinning-governed plastic deformation in a thin film of body-centred cubic nanocrystalline ternary alloys at low temperature

J Li, Q Fang, B Liu, Y Liu, C Jiang - Journal of Alloys and Compounds, 2017 - Elsevier
The plastic deformation of FeCuNi ternary alloys of BCC nanocrystalline subjected to
compressive or tensile loading is considered via molecular dynamics (MD) simulations at …

Morphological instability of iron-rich precipitates in CuFeCo alloys

KX Chen, PA Korzhavyi, G Demange, H Zapolsky… - Acta Materialia, 2019 - Elsevier
The mechanical properties of metallic materials are determined by their microstructure, and
in particular, the different morphologies of precipitates lead to distinct strengthening effects …

Role of dislocation pile-ups in nucleation-controlled size-dependent strength of Fe nanowires

R Kositski, D Mordehai - Acta Materialia, 2017 - Elsevier
We studied the strength of Fe faceted nanowires under diametrical compression using
molecular dynamics simulations. We show that a series of consecutive events of dislocation …

Atomic scale modelling of edge dislocation movement in the-Fe-Cu system

S Nedelcu, P Kizler, S Schmauder… - … and Simulation in …, 2000 - iopscience.iop.org
The aim of the present work is to investigate by molecular dynamics (MD) calculations the
interaction between a moving edge dislocation in an-Fe crystal and a copper precipitate. In …