Search Results - "Roumina, Reza"

Enhanced Ductility of a Fine‐Grained Mg–Gd–Al–Zn Magnesium Alloy by Hot Extrusion by Pourbahari, Bita, Mirzadeh, Hamed, Emamy, Massoud, Roumina, Reza

“…The grain refinement by dynamic recrystallization (DRX), the enhancement of room‐temperature strength and ductility by decreasing hot extrusion temperature,…”
Get full text

Effect of Gd on Dynamic Recrystallization Behavior of Magnesium During Hot Compression by Barezban, Mohammad Hossein, Roumina, Reza, Mirzadeh, Hamed, Mahmudi, Reza

“…Dynamic recrystallization (DRX) behavior of two binary Mg–0.5Gd and Mg–1.5Gd alloys and pure Mg were studied by hot compression in the temperature range of…”
Get full text

An efficient computational technique for modeling dislocation–precipitate interactions within dislocation dynamics by Keyhani, Amirreza, Roumina, Reza, Mohammadi, Soheil

“…•Formulating the diameter of the Orowan loops.•Introducing the resistance function for modeling precipitates.•Efficient computational model for modeling of…”
Get full text

Characterizing pearlite transformation in an API X60 pipeline steel through phase-field modeling and experimental validation by Araghi, Mohammad Y., Parsa, M. H., Ghane Ezabadi, Mostafa, Roumina, Reza, Mirzadeh, Hamed, Xu, Shuozhi

“…This study explores the microstructural characterization of pearlite phase transformation in high-strength low-alloy API X60 steel, which is used in pipelines…”
Get full text

Dislocation-precipitate interaction map by Keyhani, Amirreza, Roumina, Reza

“…[Display omitted] •Systematic numerical study of the dislocation-precipitate interaction.•Quantification of the time to the critical state of…”
Get full text

Constitutive analysis of wrought Mg-Gd magnesium alloys during hot compression at elevated temperatures by Barezban, Mohammad Hossein, Mirzadeh, Hamed, Roumina, Reza, Mahmudi, Reza

“…Constitutive behaviors of the newly developed Mg-Gd alloys were studied to make it possible to reveal the effect of Gd addition on the high-temperature…”
Get full text

A study on the role of construction methods of an edge dislocation on final arrangements of atoms via MD simulations by Pourattar, Amirmohammad, Habibi Parsa, Mohammad, Roumina, Reza

Get full text

The dynamics of recrystallized grains during static recrystallization in a hot-compressed Mg-3.2Zn-0.1Ca wt.% alloy using in-situ far field high-energy diffraction microscopy by Roumina, Reza, Lee, Sangwon, Berman, Tracy D., Shanks, Katherine S., Allison, John E., Bucsek, Ashley

“…The poor formability of rolled magnesium (Mg) alloy sheet remains a barrier to its widespread commercial use and is attributed to the strong basal texture that…”
Get full text

Melting of graphene supported Pd-Pt core-shell nanoparticles: A molecular dynamics study by Mobedpour, Bahareh, Rajabdoust, Sina, Roumina, Reza

“…Molecular dynamics simulation based on EAM, LJ and AIREBO potentials is employed to investigate the graphene support effect on thermal behavior of Pd-Pt NPs as…”
Get full text

Short Crack Behavior of an Additively Manufactured Ti–6Al–4V Alloy Under Ultrasonic High Cycle Fatigue Testing by Roumina, Reza, Rhein, Robert K., Jones, J. Wayne, Marquis, Emmanuelle A.

“…ABSTRACT The high cycle fatigue (HCF) behaviors of an additively manufactured (AM) Ti–6Al–4V alloy with fully lamellar microstructures processed electron beam…”
Get full text

XFEM–dislocation dynamics multi-scale modeling of plasticity and fracture by Keyhani, Amirreza, Goudarzi, Mohsen, Mohammadi, Soheil, Roumina, Reza

“…•Multi-scale modeling of plasticity by coupled dislocation dynamics and XFEM.•Mixed-mode cohesive crack propagation in precipitate contained alloys.•Mixed-mode…”
Get full text

Atomic Insights into the Melting Behavior of Metallic Nano-catalysts by Bahareh Mobedpour, Reza Roumina, Sina Rajabdoust

“…In the present study, molecular dynamics simulations have been utilized to provide fundamental understanding of melting behavior of pure Pd and Pt…”
Get full text

Quantification of Dislocation-Precipitate Interactions by Keyhani, Amirreza, Roumina, Reza

“…The present research is the first attempt to systematically quantify the dislocation-precipitate interaction in terms of applied shear stress, precipitate…”
Get full text