Powder consolidation of Al–10 wt% Fe alloy by High-Pressure Torsion

Cubero-Sesín, Jorge M.; Horita, Zenji

doi:10.1016/j.msea.2012.08.029

Cited by 63 publications

(33 citation statements)

References 51 publications

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“…Additionally, for comparison, disk samples of 0.5 and 4 wt% Fe following extrusions of the cast material were processed by HPT, and mixtures of high purity powders with compositions of 0.5 and 10 wt% Fe were consolidated by HPT. The evolution of mechanical properties and microstructures of these samples were presented in previous reports .…”

Section: Methodsmentioning

confidence: 96%

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High Strength and Electrical Conductivity of Al‐Fe Alloys Produced by Synergistic Combination of High‐Pressure Torsion and Aging

Cubero-Sesín

Arita²,

Horita

2015

Adv Eng Mater

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A synergistic combination of high-pressure torsion (HPT) and artificial aging was attempted in Al-Fe alloys to achieve high strength and high electrical conductivity. HPT produced an ultrafine-grained structure and supersaturation of Fe in the matrix, resulting in high strength above 500 MPa. Aging after the HPT processing increased the electrical conductivity well over 50 IACS% while simultaneously increasing the yield strength above 600 MPa via precipitation of dissolved Fe. The results demonstrate that Al containing a low fraction of Fe (2 wt%) should be a good candidate for a high strength, light weight, and high-electrical-conductive material.

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Section: Methodsmentioning

confidence: 96%

“…Processing by HPT has been used in several studies as a powerful tool to obtain microstructure control in disk‐type samples of Al‐Fe alloys . This capability can be extended to larger ring‐type HPT samples, thin rectangular sheets by high‐pressure sliding (HPS), or a continuous method for HPT (C‐HPT) to produce sheets and wires .…”

Section: Introductionmentioning

confidence: 99%

High Strength and Electrical Conductivity of Al‐Fe Alloys Produced by Synergistic Combination of High‐Pressure Torsion and Aging

Cubero-Sesín

Arita²,

Horita

2015

Adv Eng Mater

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“…Nevertheless, the fabrication of high-strength metals generally involves long-term processing conducted under extreme conditions using special facilities. Accordingly, processing by HPT was extended recently as a powder consolidation technique in mechanical alloying for fabricating dissimilar metallic systems based on Al and Mg; for example, Al-Fe, [4] Al-Mg, [5] Al-Ni, [6] Al-Ti, [7] Al-W, [8,9] and Mg-Zn-Y. [10] Nevertheless, there are practical difficulties associated with powder processing because of the requirements of high temperatures [6,7,9,10] or the use of a two-step process of cold/hot compaction prior to HPT consolidation [8] and the consequent inherent damage that may be imparted to the HPT anvils because of the stacking of fine hard powders in the depressions on the anvil surfaces.…”

Section: Introductionmentioning

confidence: 99%

Micro‐Mechanical Behavior of an Exceptionally Strong Metal Matrix Nanocomposite Processed by High‐Pressure Torsion

et al. 2016

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This research describes the micro-mechanical behavior of an Al-Mg alloy system synthesized from two separate commercial Al-1050 and ZK60 alloys through the application of high-pressure torsion (HPT) for five turns at room temperature. The essential mechanical characteristics of the alloys are observed at the corresponding phases in a multi-layered structure at the disk center but the edge contains a metal matrix nanocomposite (MMNC) exhibiting an apparent plastic instability and decreasing strain rate sensitivity under strain rates of 10 À4 À10 À3 s À1 . The results demonstrate a significant opportunity for using HPT processing to prepare new alloy systems involving a wide range of MMNCs.

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“…Combinations of different SPD processing techniques are available to enhance the upper limit of mechanical properties of a specific alloy [9][10][11][12][13] but it is also important to study achieving superior properties by bonding dissimilar metals through a procedure such as fusion welding. Alternatively, processing by HPT was applied recently for the consolidation of metal powders and for fabricating dissimilar metallic systems based on aluminum and magnesium: for example, Al-Fe, 14 Al-Mg, 15 Al-Ni, 16 Al-Ti, 17 Al-W, 18,19 and Mg-Zn-Y. 20 Nevertheless, the practical difficulties associated with these processes include a requirement for a high processing temperature, 16,17,19,20 the need for a two-step process of cold/hot compaction prior to consolidation by HPT 18 and the inherent damage that may be introduced in the HPT anvils because of the stacking of fine hard powders in the depressions on the anvil surfaces.…”

Section: Introductionmentioning

confidence: 99%

Using high-pressure torsion to process an aluminum–magnesium nanocomposite through diffusion bonding

et al. 2015

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Disks of commercial Al-1050 and ZK60A alloys were stacked together and then processed by conventional high-pressure torsion (HPT) through 1 and 5 turns at room temperature to investigate the synthesis of an Al-Mg alloy system. Measurements of microhardness and observations of the microstructures and local compositions after processing through 5 turns revealed the formation of an ultrafine multi-layered structure in the central region of the disk but with an intermetallic b-Al 3 Mg 2 phase in the form of nano-layers in the nanostructured Al matrix near the edge of the disk. The activation energy for diffusion bonding of the Al and Mg phases was estimated and it is shown that this value is low and consistent with surface diffusion due to the very high density of vacancy-type defects introduced by HPT processing. The results demonstrate a significant potential for making use of HPT processing in the preparation of new alloy systems.

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Powder consolidation of Al–10 wt% Fe alloy by High-Pressure Torsion

Cited by 63 publications

References 51 publications

High Strength and Electrical Conductivity of Al‐Fe Alloys Produced by Synergistic Combination of High‐Pressure Torsion and Aging

High Strength and Electrical Conductivity of Al‐Fe Alloys Produced by Synergistic Combination of High‐Pressure Torsion and Aging

Micro‐Mechanical Behavior of an Exceptionally Strong Metal Matrix Nanocomposite Processed by High‐Pressure Torsion

Using high-pressure torsion to process an aluminum–magnesium nanocomposite through diffusion bonding

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