Search
Search Results
-
Quantifying the Dislocation Cell Contribution to the Yield Strength of 316L Steel
The present work investigates the contribution of dislocation cell to the yield strength of additively manufactured (AM) 316L steel through...
-
3D Discrete Dislocation Dynamics Simulations of Multiple Spiral Dislocation Sources
A spiral dislocationSpiral dislocation source is a dislocation with one end fixed on the slip plane, while the other end of the spiral...
-
Dislocation structure during nano-indentation and surface topographic maps
Dislocation structure evolution during nano-indentation is investigated using a three-dimensional multi-scale discrete dislocation plasticity model....
-
Unraveling dislocation-based strengthening in refractory multi-principal element alloys
Refractory multi-principal element alloys (RMPEAs) draw great interest with their superior mechanical properties and extremely high melting points,...
-
Finite-temperature screw dislocation core structures and dynamics in α-titanium
A multiscale approach based on molecular dynamics (MD) and kinetic Monte Carlo (kMC) methods is developed to simulate the dynamics of an 〈 a 〉 screw...
-
Descriptions of Dislocation via First Principles Calculations
Dislocation is one of the most representative plastons to determine the mechanical properties of crystalline materials. In this section, several...
-
Quantitative tests revealing hydrogen-enhanced dislocation motion in α-iron
Hydrogen embrittlement jeopardizes the use of high-strength steels in critical load-bearing applications. However, uncertainty regarding how hydrogen...
-
Mechanism of Solid-Solution Hardening: Quasi-Localization of Dislocation Kinks
AbstractThe sensitivity of the mechanical properties of materials to violations of the translational invariance of the crystal lattice makes it...
-
Dislocation-Based Finite Element Modeling of an Off-Axis Twist Extrusion with Variable Helix Angles
This study presents a comprehensive investigation into the deformation behavior and microstructural characteristics of pure aluminum during off-axis...
-
Pb induced dislocation defects of PtCo systems: Strain-triggered oxygen reduction reaction for PEMFC
Design and development of advanced electrocatalysts with high performance and low Pt consumption are crucial for reducing the kinetic energy barrier...
-
Strengthening from dislocation restructuring and local climb at platelet linear complexions in Al-Cu alloys
Stress-driven segregation at dislocations can lead to structural transitions between different linear complexion states. In this work, we examine how...
-
Incorporating Dislocation Mechanisms into a Phenomenological Cyclic Plasticity Model for Structural Alloys
This article presents an approach to incorporating dislocation mechanisms into a phenomenological cyclic plasticity model that describes the cyclic...
-
Modeling the Evolution of the Dislocation Density and Yield Stress of Al over a Wide Range of Temperatures and Strain Rates
This paper introduces an extended model for the evolution of internal and wall dislocation densities in pure aluminum during plastic deformation. The...
-
Serrated plastic flow in deforming complex concentrated alloys: universal signatures of dislocation avalanches
Under plastic flow, multi-element high/medium-entropy alloys (HEAs/MEAs) commonly exhibit complex intermittent and collective dislocation dynamics...
-
Mechanical behavior of cavity and dislocation evolution induced by interfacial debonding of Cu/SiC composites
Investigation of the dislocation and structural evolution associated with the study of the deformation behavior of composites is extremely vital...
-
Nonequilibrium statistical thermodynamics of thermally activated dislocation ensembles: part 1: subsystem reactions under constrained local equilibrium
This three-part paper lends new insight into the interpretation of internal state variable (ISV) theory and fundamentals of the behavior of thermally...
-
Multi-Phase-Field Simulation of the Dynamic Dragging of Dislocation on the Solute Atoms and Point Defects
Point defects and dislocation can be induced in dual-phase stainless steels in the circumstance of irradiation. These defects affect the phase...
-
Nonequilibrium statistical thermodynamics of thermally activated dislocation ensembles: part 2—ensemble evolution toward correlation of enthalpy barriers
In part 1, we formally defined important physical concepts in statistical thermodynamics that undergird internal state variable (ISV) theory such as...
-
Multi-scale investigation of short-range order and dislocation glide in MoNbTi and TaNbTi multi-principal element alloys
Refractory multi-principal element alloys (RMPEAs) are promising materials for high-temperature structural applications. Here, we investigate the...
-
Formation of < 100 > vacancy dislocation loops from two-dimensional vacancy platelets in body-centered cubic iron
The < 100 > vacancy dislocation loop is a unique defect of radiation damage in ferritic steels for advanced nuclear systems, but the mechanism...
