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Journal Articles

A Continuum Dislocation Dynamics Crystal Plasticity Approach to Irradiated Body-Centered Cubic α-Iron

Stephanie A. Pitts, Wen Jiang, Davide Pizzocri, Erin I. Barker, Hussein M. Zbib
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. January 2022, 144(1): 011018.
Paper No: MATS-21-1029
https://doi.org/10.1115/1.4052256
Published Online: September 15, 2021
View Article titled, A Continuum Dislocation Dynamics Crystal Plasticity Approach to Irradiated Body-Centered Cubic α-Iron
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Topics: Crystals, Dislocations, Iron, Plasticity, Simulation, Dislocation density, Dynamics (Mechanics)
Journal Articles

Dislocation Mechanics of Extremely High Rate Deformations in Iron and Tantalum

M. A. Shehadeh, P. El Ters, R. W. Armstrong, W. Arnold
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. January 2022, 144(1): 011015.
Paper No: MATS-20-1282
https://doi.org/10.1115/1.4052104
Published Online: September 3, 2021
View Article titled, Dislocation Mechanics of Extremely High Rate Deformations in Iron and Tantalum
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Topics: Crystals, Deformation, Dislocations, Iron, Shock (Mechanics), Stress, Tantalum, Dislocation density
Journal Articles

Situating the Vector Density Approach Among Contemporary Continuum Theories of Dislocation Dynamics

Joseph Pierre Anderson, Vignesh Vivekanandan, Peng Lin, Kyle Starkey, Yash Pachaury, Anter El-Azab
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Expert View
J. Eng. Mater. Technol. January 2022, 144(1): 011014.
Paper No: MATS-21-1086
https://doi.org/10.1115/1.4052066
Published Online: August 30, 2021
View Article titled, Situating the Vector Density Approach Among Contemporary Continuum Theories of Dislocation Dynamics
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Topics: Density, Dislocations, Dynamics (Mechanics), Crystals, Dislocation density
Journal Articles

Multiscale Modeling of the Strength and Ductility Paradox for High-Pressure Torsion Samples With Gradient Microstructure

Mehdi Hamid, Maryam Jamalian, Natalia De Vincentis, Quentin Buck, David P. Field
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. January 2022, 144(1): 011013.
Paper No: MATS-21-1065
https://doi.org/10.1115/1.4051901
Published Online: August 11, 2021
View Article titled, Multiscale Modeling of the Strength and Ductility Paradox for High-Pressure Torsion Samples With Gradient Microstructure
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Topics: Dislocation density, Dislocations, Ductility, Grain boundaries, Grain size, High pressure (Physics), Mechanical behavior, Modeling, Strain gradient, Stress
Journal Articles

Thermomechanical Microstructural Predictions of Fracture Nucleation of Zircaloy-4 Alloys With δ and ɛ Hydride Distributions

I. Mohamed, T. Hasan, M. A. Zikry
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. January 2022, 144(1): 011008.
Paper No: MATS-21-1074
https://doi.org/10.1115/1.4051687
Published Online: July 19, 2021
View Article titled, Thermomechanical Microstructural Predictions of Fracture Nucleation of Zircaloy-4 Alloys With δ and ɛ Hydride Distributions
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Topics: Fracture (Materials), Fracture (Process), Nucleation (Physics), Thermomechanics, Dislocation density, Temperature
Journal Articles

Mechanical Enhancement of Graded Nanoporous Structure

Lijie He, Niaz Abdolrahim
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. January 2022, 144(1): 011007.
Paper No: MATS-21-1030
https://doi.org/10.1115/1.4051470
Published Online: June 23, 2021
View Article titled, Mechanical Enhancement of Graded Nanoporous Structure
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Topics: Deformation, Density, Dislocation density, Dislocations, Molecular dynamics simulation, Plasticity, Stress, Fracture (Materials), Elasticity, Necking
Journal Articles

A Modified Constitutive Model With Grain Rotation for Superplastic Forming of Ti–6Al–4V Alloy

Junzhou Yang, Jianjun Wu, Dongshen Yang, Qishuai Wang, Kaiwei Wang, Zengkun Zhang, Mingzhi Wang, Muhammad Muzamil
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. April 2020, 142(2): 021006.
Paper No: MATS-19-1212
https://doi.org/10.1115/1.4045364
Published Online: December 5, 2019
View Article titled, A Modified Constitutive Model With Grain Rotation for Superplastic Forming of Ti–6Al–4V Alloy
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Topics: Constitutive equations, Deformation, Dislocation density, Errors, Flow (Dynamics), Grain size, Stress, Superplastic forming, Yield stress, Alloys
Journal Articles

Atomistically Informed and Dislocation-Based Viscoplasticity Model for Multilayer Composite Thin Films

Mohsen Damadam, Mohammed Anazi, Georges Ayoub, Hussein Zbib
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research-Article
J. Eng. Mater. Technol. April 2019, 141(2): 021010.
Paper No: MATS-18-1176
https://doi.org/10.1115/1.4042034
Published Online: January 31, 2019
View Article titled, Atomistically Informed and Dislocation-Based Viscoplasticity Model for Multilayer Composite Thin Films
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Topics: Ceramics, Composite materials, Deformation, Dislocation density, Dislocations, Finite element analysis, Simulation, Steel, Tension, Thin films
Journal Articles

A Predictive Framework for Dislocation-Density Pile-Ups in Crystalline Systems With Coincident Site Lattice and Random Grain Boundaries

David M. Bond, Mohammed A. Zikry
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research-Article
J. Eng. Mater. Technol. April 2017, 139(2): 021023.
Paper No: MATS-16-1184
https://doi.org/10.1115/1.4035494
Published Online: February 13, 2017
View Article titled, A Predictive Framework for Dislocation-Density Pile-Ups in Crystalline Systems With Coincident Site Lattice and Random Grain Boundaries
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Topics: Dislocation density, Dislocations, Grain boundaries, Stress
Journal Articles

Dynamic Fracture of Aluminum-Bonded Composites

Prasenjit Khanikar, Qifeng Wu, M. A. Zikry
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research-Article
J. Eng. Mater. Technol. July 2016, 138(3): 031009.
Paper No: MATS-15-1247
https://doi.org/10.1115/1.4033036
Published Online: May 10, 2016
View Article titled, Dynamic Fracture of Aluminum-Bonded Composites
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Topics: Composite materials, Fracture (Materials), Nucleation (Physics), Particulate matter, Dislocation density, Aluminum, Stress
Journal Articles

Modeling of Microstructure Effects on the Mechanical Behavior of Ultrafine-Grained Nickels Processed by Severe Plastic Deformation by Crystal Plasticity Finite Element Model

Thê-Duong Nguyen, Van-Tung Phan, Quang-Hien Bui
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research-Article
J. Eng. Mater. Technol. April 2015, 137(2): 021010.
Paper No: MATS-14-1085
https://doi.org/10.1115/1.4029570
Published Online: April 1, 2015
View Article titled, Modeling of Microstructure Effects on the Mechanical Behavior of Ultrafine-Grained Nickels Processed by Severe Plastic Deformation by Crystal Plasticity Finite Element Model
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Topics: Constitutive equations, Crystals, Deformation, Dislocations, Finite element model, Grain size, Mechanical behavior, Nickel, Plasticity, Stress
Journal Articles

Constitutive Relations for Modeling Single Crystal GaN at Elevated Temperatures

Antoinette Maniatty, Payman Karvani
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research-Article
J. Eng. Mater. Technol. January 2015, 137(1): 011002.
Paper No: MATS-14-1094
https://doi.org/10.1115/1.4028441
Published Online: September 24, 2014
View Article titled, Constitutive Relations for Modeling Single Crystal GaN at Elevated Temperatures
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Topics: Constitutive equations, Crystals, Dislocations, Gallium nitride, Modeling, Stress, Temperature, Shear stress, Dislocation density, Plasticity
Journal Articles

Study of Machining-Induced Microstructure Variations of Nanostructured/Ultrafine-Grained Copper Using XRD

Yong Huang, Mason Morehead
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. April 2011, 133(2): 021007.
https://doi.org/10.1115/1.4003105
Published Online: March 4, 2011
View Article titled, Study of Machining-Induced Microstructure Variations of Nanostructured/Ultrafine-Grained Copper Using XRD
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Topics: Copper, Dislocation density, Grain size, Machining, Dislocations
Journal Articles

Modeling of Lath Martensitic Microstructures and Failure Evolution in Steel Alloys

T. M. Hatem, M. A. Zikry
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Predictive Science And Technology In Mechanics And Materials
J. Eng. Mater. Technol. October 2009, 131(4): 041207.
https://doi.org/10.1115/1.3183780
Published Online: September 1, 2009
View Article titled, Modeling of Lath Martensitic Microstructures and Failure Evolution in Steel Alloys
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Topics: Dislocations, Fracture (Materials), Martensitic steel, Dislocation density, Failure, Shear (Mechanics)
Journal Articles

Analysis of Large Strain Hot Torsion Textures Associated With “Continuous” Dynamic Recrystallization

S. M. Lim, C. Desrayaud, F. Montheillet
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Shear Behavior And Related Mechanisms In Materials Plasticity
J. Eng. Mater. Technol. January 2009, 131(1): 011103.
https://doi.org/10.1115/1.3030939
Published Online: December 18, 2008
View Article titled, Analysis of Large Strain Hot Torsion Textures Associated With “Continuous” Dynamic Recrystallization
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Topics: Fibers, Recrystallization, Shear (Mechanics), Texture (Materials), Torsion, Rotation, Metals, Grain boundaries, Dislocation density, Work hardening
Journal Articles

Inelastic Contact Behavior of Crystalline Asperities in rf MEMS Devices

O. Rezvanian, M. A. Zikry
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. January 2009, 131(1): 011002.
https://doi.org/10.1115/1.3026545
Published Online: December 15, 2008
View Article titled, Inelastic Contact Behavior of Crystalline Asperities in rf MEMS Devices
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Topics: Crystals, Cycles, Deformation, Density, Dislocations, Finite element analysis, Microelectromechanical systems, Plasticity, Stress, Surface roughness
Journal Articles

Dislocation Density Tensor Characterization of Deformation Using 3D X-Ray Microscopy

B. C. Larson, J. Z. Tischler, Anter El-Azab, Wenjun Liu
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Research Papers
J. Eng. Mater. Technol. April 2008, 130(2): 021024.
https://doi.org/10.1115/1.2884336
Published Online: April 2, 2008
View Article titled, Dislocation Density Tensor Characterization of Deformation Using 3D X-Ray Microscopy
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Topics: Deformation, Dislocation density, Dislocations, Microscopy, Resolution (Optics), Tensors, X-rays, Density, Plates (structures)
Journal Articles

Prediction of Grain-Boundary Interfacial Mechanisms in Polycrystalline Materials

W. M. Ashmawi, M. A. Zikry
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Technical Papers
J. Eng. Mater. Technol. January 2002, 124(1): 88–96.
https://doi.org/10.1115/1.1421611
Published Online: July 16, 2001
View Article titled, Prediction of Grain-Boundary Interfacial Mechanisms in Polycrystalline Materials
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Topics: Dislocation density, Dislocations, Grain boundaries
Journal Articles

Investigation of the Microstructural Evolution During Large Strain Cold Working of Metals by Means of Synchrotron Radiation—A Comparative Overview

M. Zehetbauer, E. Schafler, T. Unga´r, I. Kopacz, S. Bernstorff
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Technical Papers
J. Eng. Mater. Technol. January 2002, 124(1): 41–47.
https://doi.org/10.1115/1.1421049
Published Online: July 3, 2001
View Article titled, Investigation of the Microstructural Evolution During Large Strain Cold Working of Metals by Means of Synchrotron Radiation—A Comparative Overview
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Topics: Deformation, Dislocation density, Dislocations, Metals, Stress, Structural mechanics, Synchrotron radiation, X-ray diffraction, Work hardening, Copper
Journal Articles

Strain Hardening at Large Strains as Predicted by Dislocation Based Polycrystal Plasticity Model

La´szlo´ S. To´th, Alain Molinari, Yuri Estrin
Journal: Journal of Engineering Materials and Technology
Publisher: ASME
Article Type: Technical Papers
J. Eng. Mater. Technol. January 2002, 124(1): 71–77.
https://doi.org/10.1115/1.1421350
Published Online: June 26, 2001
View Article titled, Strain Hardening at Large Strains as Predicted by Dislocation Based Polycrystal Plasticity Model
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Topics: Dislocation density, Dislocations, Work hardening, Plasticity, Hardening, Composite materials, Stress