Grain size stability in a cryomilled nanocrystalline Al alloy powders containing diamantane nanoparticles

Hanna, Walid; Maung, Khinlay; Earthman, James C.; Mohamed, Farghalli A.

doi:10.1016/j.msea.2018.10.006

Cited by 12 publications

(5 citation statements)

References 28 publications

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“…The reason for the high strength of the cryomilled materials is related to many contributions, mainly grain size and solid solution strengthening [22,[147][148][149][150]. The cryomilled reduced the size of particles and homogenized the alloy mixture with the addition of other additives metals/alloys [151].…”

Section: Nanostructured Alloys and Their Consolidationmentioning

confidence: 99%

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Cryomilling as environmentally friendly synthesis route to prepare nanomaterials

Katiyar

Biswas

Tiwary

2020

International Materials Reviews

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The milling of materials at cryogenic temperature has gained importance both in academic as well as the industrial community in the last two decades, primarily because of significant advantages this technique as compared to milling at room temperature; environmental friendly nature, cost-effectiveness, rapid grain refinement, less contamination, and large scale production capability of various nanomaterials. Scientifically, milling at cryo-temperature exhibits several distinct material related phenomena; suppression of recovery and recrystallization, predominant fractures over cold welding, significantly low oxidation, and contamination, leading to rapid grain refinement. Cryomilling has extensively been used to obtain finer scale powder of spices for the preservation of aroma, medicines for effective dissolution, or amorphization. It has been considered an environmentally friendly process as it utilizes benign liquid nitrogen or argon without discharging any toxic entity to the environment, making the process attractive and sustainable. The present review is intended to provide various scientific as well as technological aspects of cryomilling, environmental impact, and future direction.

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Section: Nanostructured Alloys and Their Consolidationmentioning

confidence: 99%

“…The cryomilled reduced the size of particles and homogenised the alloy mixture with the addition of other additives metals/alloys [151].…”

Section: Cryomilling Of Metals and Alloysmentioning

confidence: 99%

Cryomilling as environmentally friendly synthesis route to prepare nanomaterials

Katiyar

Biswas

Tiwary

2020

International Materials Reviews

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“…Submersion in water, dry ice, or alcohol has been used to generate grain sizes of~100 nm in Al7075 alloy, [271] 25 to 40 nm in Al7050, [272] 174 nm in OFHC Cu [273] and < 100 nm in AZ61 Mg alloy. [274] Analogously, cold-spray with mechanically milled powders has resulted in grain sizes in Cu (5 to 40 nm grain size) [275] and Al5083 (20 to 30 nm). [276] Friction consolidation and ShAPE are versatile in that they can process both precursor powders or bulk ingot materials, but contrary to cold-spray, the high-shear and typical thermal recovery that is observed would annihilate any existing nanocrystalline grains in the mechanically milled powers.…”

Section: Prospects For Solid Phase Processingmentioning

confidence: 99%

Building on Gleiter: The Foundations and Future of Deformation Processing of Nanocrystalline Metals

Mathaudhu

2020

Metall Mater Trans A

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In 1989, fueled by his prior reports and findings, Prof. Herbert Gleiter published a seminal work on the synthesis, processing, and possibilities for nanocrystalline materials. This spark exploded into the field of bulk nanocrystalline metals by severe plastic deformation processing, with the primary driver being attaining the ultimate strength of a metal through refinement of the grain sizes to a level approaching the theoretically possible limits. This paper will briefly explore the historical development of SPD and based on Turnbull's strategy of ''energizing and quenching'' materials to attain a desirable metastable state, present thoughts on incipient-related areas of exploration, including thermal stabilization through solute additions, the role of trace impurities and interstitials, the smallest grain size achievable (both theoretically and practically), and the captivating yet hazy character and role of the grain boundary. Lastly, some new approaches to making and then controlling the behavior of nanocrystalline materials will be presented. At each stage, opportunities for future study will be raised. On the 50th Anniversary of Metallurgical and Materials Transactions A, it is hoped that this report will build off the seed planted by Gleiter and inspire new work and collaborations in the years to come.

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“…It is now generally recognized that development of NC materials that can be both produced and deployed successfully is an exercise in alloy design; secondary components are added for their explicit ability to stabilize a fine grain structure. Some approaches in this vein are classical, in the sense that they rely primarily on kinetic impediments to grain growth, such as Zener pinning by small particles, or on solute drag effects that slow GB migration (23)(24)(25)(26)(27). However, researchers and engineers are developing an increasing command over a primary, thermodynamic stabilization effect that is specifically relevant for grain sizes on the nanoscale, namely, GB segregation-based stabilization.…”

Section: Introductionmentioning

confidence: 99%

Stabilized Nanocrystalline Alloys: The Intersection of Grain Boundary Segregation with Processing Science

Perrin

Schuh

2021

Annu. Rev. Mater. Res.

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Processing science for nanocrystalline metals has largely focused on far-from-equilibrium methods that can generate many grain boundaries with excess defect energy. Conversely, the science of stabilizing nanocrystalline alloys has largely focused on the lowering of that excess defect energy through grain boundary segregation, bringing nanocrystalline structures closer to equilibrium. With increasing technological adoption of stabilized nanocrystalline alloys, there is a substantial need for research at the intersection of these two fields. This review lays out the basic thermodynamic issues of the two subfields and surveys the literature on the most common processing methods, including severe plastic deformation, ball milling, physical vapor deposition, and electrodeposition. We provide an overview of studies that have examined grain boundary segregation through each of these methods and identify general themes. We conclude that there is substantial scope for more systematic work at the intersection of these fields to understand how nonequilibrium processing affects grain boundary segregation. Expected final online publication date for the Annual Review of Materials Science, Volume 51 is August 2021. Please see http://www.annualreviews.org/page/journal/pubdates for revised estimates.

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Grain size stability in a cryomilled nanocrystalline Al alloy powders containing diamantane nanoparticles

Cited by 12 publications

References 28 publications

Cryomilling as environmentally friendly synthesis route to prepare nanomaterials

Cryomilling as environmentally friendly synthesis route to prepare nanomaterials

Building on Gleiter: The Foundations and Future of Deformation Processing of Nanocrystalline Metals

Stabilized Nanocrystalline Alloys: The Intersection of Grain Boundary Segregation with Processing Science

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