Sheared Suspensions II - Depletion Aggregation

1991 ◽  
Vol 248 ◽  
Author(s):  
J. R. Melrose
Keyword(s):  
Brownian Dynamics ◽  
Equilibrium Phase ◽  
Equilibrium Phase Diagram ◽  
Companion Paper ◽  
Interaction Forces ◽  
Shear Rates ◽  
Shear Gradient ◽  
Sheared Suspensions ◽  
Low Shear ◽  
Non Equilibrium

AbstractA Brownian dynamics algorithm described in the companion paper [1] is used to simulate sheared suspensions of particles interacting via a depletion potential. The shear and interaction forces interplay to give a complex non-equilibrium phase diagram: a variety of shear induced agglomerates form at low shear rate, but, for shear rates above a non-equilibrium phase boundary the agglomerates develop interfaces predominantly orientated parallel to the plane of shear gradient and flow.

Non-Equilibrium Phase Behavior of Confined Molecular Films at Low Shear Rates

2017 ◽  
Vol 254 (12) ◽  
pp. 1600862 ◽  
Author(s):  
Szymon Maćkowiak ◽  
David M. Heyes ◽  
Slawomir Pieprzyk ◽  
Daniele Dini ◽  
Arkadiusz C. Brańka
Keyword(s):  
Phase Behavior ◽  
Equilibrium Phase ◽  
Molecular Films ◽  
Shear Rates ◽  
Low Shear ◽  
Non Equilibrium

Sheared Suspensions I - Electrorheology and Depletion Aggregation

1991 ◽  
Vol 248 ◽  
Author(s):  
J. R. Melrose
Keyword(s):  
Computer Simulation ◽  
Phase Diagrams ◽  
Equilibrium Phase ◽  
Companion Paper ◽  
The Other ◽  
Sheared Suspensions ◽  
Non Equilibrium

AbstractIdealised models of sheared suspensions are studied by computer simulation. In this and the companion paper [1], non-equilibrium phase diagrams are evaluated for two models: one for electrorheology (this paper), the other for aggregation due to depletion (companion paper [1]). Distinct structural phases and their associated rheology are reported.

Key Program for Non-Equilibrium Phase Diagram of Ni 1 Type Steel

2011 ◽  
Vol 204-210 ◽  
pp. 1357-1361 ◽  
Author(s):  
Qing Hua Zou ◽  
Sheng Zhong Zou
Keyword(s):  
Phase Diagram ◽  
Chemical Composition ◽  
Structural Steel ◽  
Equilibrium Phase ◽  
Equilibrium Phase Diagram ◽  
Air Cooling ◽  
Lever Rule ◽  
Dynamic Phase ◽  
New Type ◽  
Non Equilibrium

The practical air-cooling new-type dynamic phase diagram and nonequilirium lever rule of Ni 1 structural steel was established, and the relevant structure and chemical composition were analyzed, which can be used in practical production. The computer programs for drawing binary non-equilibrium phase diagram of Ni type structural steel have designed.

scholarly journals Forming mechanism of equilibrium and non-equilibrium metallurgical phases in dissimilar aluminum/steel (Al–Fe) joints

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Shun-Li Shang ◽  
Hui Sun ◽  
Bo Pan ◽  
Yi Wang ◽  
Adam M. Krajewski ◽  
...  
Keyword(s):  
First Principles ◽  
High Pressures ◽  
Equilibrium Phase ◽  
Dissimilar Materials ◽  
Equilibrium Phase Diagram ◽  
Atomic Diffusion ◽  
Forming Mechanism ◽  
Almost All ◽  
Steel Joints ◽  
Non Equilibrium

AbstractForming metallurgical phases has a critical impact on the performance of dissimilar materials joints. Here, we shed light on the forming mechanism of equilibrium and non-equilibrium intermetallic compounds (IMCs) in dissimilar aluminum/steel joints with respect to processing history (e.g., the pressure and temperature profiles) and chemical composition, where the knowledge of free energy and atomic diffusion in the Al–Fe system was taken from first-principles phonon calculations and data available in the literature. We found that the metastable and ductile (judged by the presently predicted elastic constants) Al6Fe is a pressure (P) favored IMC observed in processes involving high pressures. The MoSi2-type Al2Fe is brittle and a strong P-favored IMC observed at high pressures. The stable, brittle η-Al5Fe2 is the most observed IMC (followed by θ-Al13Fe4) in almost all processes, such as fusion/solid-state welding and additive manufacturing (AM), since η-Al5Fe2 is temperature-favored, possessing high thermodynamic driving force of formation and the fastest atomic diffusivity among all Al–Fe IMCs. Notably, the ductile AlFe3, the less ductile AlFe, and most of the other IMCs can be formed during AM, making AM a superior process to achieve desired IMCs in dissimilar materials. In addition, the unknown configurations of Al2Fe and Al5Fe2 were also examined by machine learning based datamining together with first-principles verifications and structure predictions. All the IMCs that are not P-favored can be identified using the conventional equilibrium phase diagram and the Scheil-Gulliver non-equilibrium simulations.

scholarly journals Forming Mechanism of Equilibrium and Non-equilibrium Metallurgical Phases in Dissimilar Materials: Illustrated With Aluminum/steel (Al-Fe) Joints

2021 ◽  
Author(s):  
Shun-Li Shang ◽  
Hui Sun ◽  
Bo Pan ◽  
Yi Wang ◽  
Adam M. Krajewski ◽  
...  
Keyword(s):  
First Principles ◽  
High Pressures ◽  
Equilibrium Phase ◽  
Dissimilar Materials ◽  
Equilibrium Phase Diagram ◽  
Atomic Diffusion ◽  
Forming Mechanism ◽  
Almost All ◽  
Steel Joints ◽  
Non Equilibrium

Abstract Forming metallurgical phases has a critical impact on the performance of dissimilar materials joints. Here, we shed light on the forming mechanism of equilibrium and non-equilibrium intermetallic compounds (IMCs) in the dissimilar aluminum/steel joints with respect to processing history (e.g., the pressure- and temperature-profiles) and chemical composition, where the used knowledge of free energy and atomic diffusion in the Al-Fe system was taken from first-principles phonon calculations and data available in the literature. We found that the metastable while ductile (judged by the presently predicted elastic constants) Al6Fe is a pressure (P) favored IMC observed in the processes involving high pressures. The MoSi2-type Al2Fe is a brittle and a strong P-favored IMC observed at high pressures. The stable, brittle h-Al5Fe2 is the most commonly observed IMC (followed by q-Al13Fe4) in almost all processes, such as fusion/solid-state welding and additive manufacturing (AM), since h-Al5Fe2 is temperature-favored, possessing high thermodynamic driving force of formation and the fastest atomic diffusivity among all Al-Fe IMCs. Notably the ductile AlFe3, the less ductile AlFe, and most of the other IMCs can be formed during AM, making AM a superior process to achieve desired IMCs in dissimilar materials. In addition, the unknown configurations of Al2Fe and Al5Fe2 were also examined by machine learning based datamining together with first-principles verifications and structure predictor. All the IMCs, which are not P-favored, can be identified using the conventional equilibrium phase diagram and the Scheil-Gulliver non-equilibrium simulations.

Key Drawing Program for the Prior Eutectoid and Eutectoid Zone of Non-Equilibrium Phase Diagram of Carbon Steel

2014 ◽  
Vol 692 ◽  
pp. 439-443
Author(s):  
Qing Hua Zou ◽  
Li Zhu
Keyword(s):  
Phase Diagram ◽  
Carbon Steel ◽  
Computer Calculation ◽  
Equilibrium Phase ◽  
Equilibrium Phase Diagram ◽  
Chemical Compositions ◽  
Main Computer ◽  
New Type ◽  
Drawing Program ◽  
Non Equilibrium

The new type dynamic phase diagrams and the non-equilibrium lever principle of carbon steel have been established and discussed, the corresponding structures and chemical compositions are analyzed. The computer calculation programming of phase diagram and main computer program have been setted.

scholarly journals Non-equilibrium Phase Diagram for a Model with Coalescence, Evaporation and Deposition

2013 ◽  
Vol 152 (6) ◽  
pp. 1115-1144 ◽  
Author(s):  
Colm Connaughton ◽  
R. Rajesh ◽  
Roger Tribe ◽  
Oleg Zaboronski
Keyword(s):  
Phase Diagram ◽  
Equilibrium Phase ◽  
Equilibrium Phase Diagram ◽  
Non Equilibrium
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