Strain and texture in friction extrusion of aluminum wire

Li, Xiao; Tang, Wenming; Reynolds, Anthony P.; Tayon, Wesley A.; Brice, Craig

doi:10.1016/j.jmatprotec.2015.09.012

Cited by 46 publications

(16 citation statements)

References 19 publications

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“…The strains at 1/3r of the wire cross section at the sectioned locations were estimated based on the spiral morphology of the 1/3r marker wires at those locations. The methodologies used for marker wire insertion and strain calculation can be found in greater detail in Li et al [44].…”

Section: Methodsmentioning

confidence: 99%

“…A more quantitative comparison of the material deformation predicted by the simulation and experimentally observed was carried out by looking at the strain measurements. In the experiment, the strains at 1/3r of the wire cross section at 60, 100, 200, 300, 400, and 500 mm from the wire start were estimated based on the spiral shape of the 1/3r marker material at these locations [44]. The cylindrical coordinate system was used for the estimated experimental strains.…”

Section: Strain Validationmentioning

confidence: 99%

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Meshfree simulation and experimental validation of extreme thermomechanical conditions in friction stir extrusion

Gupta

Xiao

et al. 2021

Comp. Part. Mech.

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Friction stir extrusion (FSE) is a novel solid-phase processing technique that consolidates and extrudes metal powders, flakes, chips, or billets into high-performance parts by plastic deformation, which has the potential to save substantial processing time and energy. Currently, most studies on FSE are experimental and only a few numerical models have been developed to explain and predict the complex physics of the process. In this work, a meshfree simulation framework based on smoothed particle hydrodynamics (SPH) was developed for FSE. Unlike traditional grid-based methods, SPH is a Lagrangian particle-based method that can handle severe material deformations, capture moving interfaces and surfaces, and monitor the field variable histories explicitly without complicated tracking schemes. These aspects of SPH make it attractive for the FSE process, where in situ evolution of field variables is difficult to observe experimentally. To this end, a 3-D, fully thermomechanically coupled SPH model was developed to simulate the FSE of aluminum wires. The developed model was thoroughly validated by comparing the numerically predicted material flow, strain, temperature history, and extrusion force with experimental results for a certain set of process parameters. The validated SPH model can serve as an effective tool to predict and better understand the extreme thermomechanical conditions during the FSE process.

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Section: Methodsmentioning

confidence: 99%

Section: Strain Validationmentioning

confidence: 99%

Meshfree simulation and experimental validation of extreme thermomechanical conditions in friction stir extrusion

Gupta

Xiao

et al. 2021

Comp. Part. Mech.

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“…An early conjectured model of nanocrystallization (largely for high-stacking fault energy fcc materials) during high-energy milling (intense cyclic deformation at highstrain rates) was summarized into three stages by Fecht Fig. 3-Typical deformation processing methods for obtaining nanocrystalline (< 100 nm) or ultrafine (100 to 1000 nm) grains: (a) mechanical milling (MM), [21,22] (b) cold-spray (CS), [37] (c) equal-channel angular extrusion/pressing (ECAE/ECAP), [38,39] (d) high-pressure torsion (HPT), [38,40] (e) accumulative roll bonding (ARB), [38] (f) friction stir processing (FSP), [41] (g) friction extrusion (FE), [42] (h) large-strain extrusion machining (LSEM), [43] (i) surface mechanical attrition treatment (SMAT), [44] and (j) surface mechanical grinding treatment (SMGT). [45] Reprinted from Refs [22,37,38,[37][38] with permission from Elsevier.…”

Section: The Current State Of Severe Plastic Deformation Approachmentioning

confidence: 99%

“…The most well-known and well-studied SPP methods are friction stir welding (FSW) and friction stir processing (FSP). [257] Other SPP methods may include cold-spray, [37,[258][259][260] friction extrusion, friction consolidation and shear-assisted processing and extrusion (ShAPE) methods, [42,[261][262][263][264][265][266] and solid-state additive manufacturing. [267][268][269][270] In the same way that heterostructured materials are somewhat artificially collected based on heterogenous **In the opinion of the author, a very similar transition has been made between the bulk metallic glass [283,284] community and the high-entropy alloys community.…”

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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“…Strain and texture of wire FSBE were studied. 16 Finite element models and experimental investigation of material flow and heat transfer were conducted as well. [17][18][19] Most studies on FSBE of extruding tubes mainly used solid bar as feedstock material.…”

Section: Introductionmentioning

confidence: 99%

Microstructure Evolution and Mechanical Property Characterization of 6063 Aluminum Alloy Tubes Processed with Friction Stir Back Extrusion

Zhang

Frederick

Wang

et al. 2019

JOM

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Friction stir back extrusion (FSBE) is a technique for lightweight metal extrusion. The frictional heat and severe plastic deformation of the process generate an equiaxed refined grain structure because of dynamic recrystallization. Previous studies proved that the fabrication of tube and wire structures is feasible. In this work, hollow cylindrical billets of 6063-T6 aluminum alloy were used as starting material. A relatively low extrusion ratio allows for a temperature and deformation gradient through the tube wall thickness to elucidate the effect of heat and temperature on the microstructure evolution during FSBE. The force and temperature were recorded during the processes. The microstructures of the extruded tubes were characterized using an optical microscope, energy-dispersive x-ray spectroscopy, electron backscatter diffraction, and hardness testing. The process reduced the grain size from 58.2 lm to 20.6 lm at the inner wall. The microhardness of the alloy was reduced from 100 to 60-75 HV because of the process thermal cycle. tract No. DE-AC05-00OR22725 with the US Department of Energy. The United States Government retains and the publisher, by accepting the article for publication, acknowledges that the United States Government retains a non-exclusive, paid-up, irrevocable, worldwide license to publish or reproduce the published form of this manuscript, or allow others to do so, for United States Government purposes. The Department of Energy will provide public access to these results of federally sponsored research in accordance with the DOE Public Access Plan (http://energy.gov/downloads/do e-public-access-plan).

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Strain and texture in friction extrusion of aluminum wire

Cited by 46 publications

References 19 publications

Meshfree simulation and experimental validation of extreme thermomechanical conditions in friction stir extrusion

Meshfree simulation and experimental validation of extreme thermomechanical conditions in friction stir extrusion

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

Microstructure Evolution and Mechanical Property Characterization of 6063 Aluminum Alloy Tubes Processed with Friction Stir Back Extrusion

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