Search Results - "MOHAMED, Farghalli A"

On the minimum grain size obtainable by high-pressure torsion by Mohamed, Farghalli A., Dheda, Shehreen S.

“…Recently, a dislocation model that quantitatively relates the minimum grain size obtainable by ball milling, dmin, to several physical parameters, such as the…”
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A dislocation model for the minimum grain size obtainable by milling by Mohamed, Farghalli A.

“…Primary among the processing techniques that are now available for synthesizing bulk nanocrystalline materials is ball milling, which produces nanostructures…”
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Deformation mechanism maps for micro-grained, ultrafine-grained, and nano-grained materials by Mohamed, Farghalli A.

“…▶ It is shown that a deformation mechanism map based on grain size can provide an overall presentation of the domains of Coble creep, superplastic flow…”
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On the minimum grain size obtainable by equal channel angular pressing by Mohamed, Farghalli A., Dheda, Shehreen S.

“…Recently, a dislocation model that relates minimum grain size, dmin, obtainable in metals by ball milling to several physical parameters was developed and also…”
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Micrograin Superplasticity: Characteristics and Utilization by Mohamed, Farghalli A

“…Micrograin Superplasticity refers to the ability of fine-grained materials (1 µm < d < 10 μm, where d is the grain size) to exhibit extensive neck-free…”
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Investigation of low temperature thermal stability in bulk nanocrystalline Ni by Chauhan, Manish, Mohamed, Farghalli A.

“…Grain growth behavior of bulk nanocrystalline Ni, prepared by an electrodeposition technique with average grain sizes of 20 and 15 nm was investigated in the…”
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Effect of Annealing on Hardness and the Modulus of Elasticity in Bulk Nanocrystalline Nickel by Torrents, Anna, Yang, Heather, Mohamed, Farghalli A.

“…Experiments on hardness and the modulus of elasticity were conducted at room temperature on samples of electrodeposited (ED) nanocrystalline (nc) Ni that were…”
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Correlation between the minimum grain size obtainable by ball milling and lattice strain by Mohamed, Farghalli A.

“…Primary among the top-down processing techniques that can be used to synthesize nanocrystalline materials is ball milling. During milling, the gain size…”
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Interpretation of nanoscale softening in terms of dislocation-accommodated boundary sliding by MOHAMED, Farghalli A

“…Consideration of the mechanical data on nanocrystalline (nc) materials shows the presence of a critical grain size, d^sub c^, such that for d larger than d^sub…”
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Creep and superplasticity in nanocrystalline materials: current understanding and future prospects by Mohamed, Farghalli A, Li, Yong

“…Nanocrystalline materials (nc-materials), which are characterized by a grain size in the range 1–100 nm, have emerged as a new class of materials with unusual…”
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Interpretation of the creep behavior of nanocrystalline Ni in terms of dislocation accommodated boundary sliding by MOHAMED, Farghalli A, CHAUHAN, Manish

“…The lack of experimental data that would characterize creep and deformation-induced grain size growth in nc-materials under the conditions of large strains and…”
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On the creep transition from superplastic behavior to nanocrystalline behavior by Mohamed, Farghalli A.

“…The present analysis shows that the creep transition from superplastic behavior to nanocrystalline behavior can be defined by an expression, which relates the…”
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Thermal stability in bulk cryomilled ultrafine-grained 5083 Al alloy by ROY, Indranil, CHAUHAN, Manish, LAVERNIA, Enrique J, MOHAMED, Farghalli A

“…Thermal stability in bulk ultrafine-grained (UFG) 5083 Al that was processed by gas atomization followed by cryomilling, consolidation, and extrusion, and that…”
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Correlation between the Deformation of Nanostructured Materials and the Model of Dislocation Accommodated Boundary Sliding by Mohamed, Farghalli A.

“…Very recently, a new model for deformation in nanocrystalline (nc) materials has been formulated. The development of the model was based on the concept that…”
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Superplastic behavior of Zn–22%Al containing nano-scale dispersion particles by Xun, Yuwei, Mohamed, Farghalli A.

“…A creep investigation was performed on Zn–22%Al in which dispersion particles were introduced by cryomilling. The results show that the particles have no…”
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Correlations between the minimum grain size produced by milling and material parameters by Mohamed, Farghalli A., Xun, Yuwei

“…In this paper, data reported for the minimum average grain size that was obtained by ball milling are analyzed. It is shown that when the normalized minimum…”
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Inverse Hall–Petch behavior in diamantane stabilized bulk nanocrystalline aluminum by Maung, Khinlay, Earthman, James C., Mohamed, Farghalli A.

“…The mechanical behavior of bulk cryomilled aluminum stabilized by diamantane nanoparticles is compared with that of bulk cryomilled commercial purity (CP)…”
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Mechanical properties of iron processed by severe plastic deformation by HAN, Bing Q, LAVERNIA, Enrique J, MOHAMED, Farghalli A

“…In the present study, the mechanical properties of Fe processed via severe plastic deformation (equal-channel angular pressing (ECAP)) at room temperature were…”
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Slip-accommodated superplastic flow in Zn-22 wt%Al by Xun, Yuwei, Mohamed, Farghalli A.

“…Experiments were conducted on the Zn-22 wt% Al eutectoid that contained nanometre-scale dispersion particles. These particles were introduced in the matrix of…”
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Refining efficiency and capability of top-down synthesis of nanocrystalline materials by Xun, Yuwei, Mohamed, Farghalli A.

“…► True strain is a valid parameter for evaluating grain refinement during various SPD processes. ► SPD processes exhibit a similar trend in the relationship…”
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