An approach for fabrication of Al-Cu composite by high pressure torsion

Даниленко, В. Н.; Sergeev, S. N.; Baimova, Julia A.; Korznikova, G. F.; Nazarov, K. S.; Khisamov, R. Kh.; Glezer, A. M.; Mulyukov, R. R.

doi:10.1016/j.matlet.2018.09.158

Cited by 56 publications

(27 citation statements)

References 28 publications

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“…The invariant reactions, together with the reaction temperatures and the compositions of the reacting phases are listed in Table IV. The proposed stable phase diagram should be used as a basis for further study, such as the effect of high pressures [25] or strong magnetic fields [26] on the Al-Cu binary phase diagram.…”

Section: E Revised Complete Phase Diagrammentioning

confidence: 99%

Experimental Description of the Al-Cu Binary Phase Diagram

Zobač

Kroupa

Zemanová

et al. 2019

Metall Mater Trans A

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The phase diagram of the Al-Cu binary system was reinvestigated experimentally. The current study was designed to contribute to a better description of those parts of the phase diagram which are disputed in the current scientific literature, and in addition, to study the phase equilibria at 300°C. The melting behavior of the h-phase was confirmed to be peritectic. A metastable congruent solidification of the h-phase was observed from the microstructural examination of as-cast samples. The location of the liquidus curve in this region of the phase diagram was more accurately defined using DSC measurements taken at slow-heating rates (1°C min À1). The temperature stability of the f-phase was reevaluated and was found to lie in the range 373-597°C. The phase boundaries of the c¢ + e¢ two-phase field were experimentally defined. Difficulties in defining the c¢/d transition were addressed by a combined EDX/XRD investigation of more than ten samples that had been annealed in the temperature range of 500 to 750°C. The (c¢ + d) two-phase field was postulated from XRD studies of quenched samples. The temperature of the ordering reaction c M c¢ within the c(c¢) + b phase field was experimentally determined to be 779.6°C. All other parts of the Al-Cu phase diagram studied here were found to be in very good agreement with the most recent previous descriptions.

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Section: E Revised Complete Phase Diagrammentioning

confidence: 99%

Experimental Description of the Al-Cu Binary Phase Diagram

Zobač

Kroupa

Zemanová

et al. 2019

Metall Mater Trans A

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“…Practically, in annealed CCA wires only three IMC are often observed (Al2Cu, AlCu and Al4Cu9) [13,[19][20][21], but it should be noted that in few cases other configurations have been reported involving Al3Cu4 [7][8][9][10][11], Al2Cu3 [22], or the absence of AlCu [22,23]. In any case, the reaction is governed by bulk diffusion and the energy of formation for the growth of the most common IMC are 117 kJ/mol, 107 kJ/mol and 90 kJ/mol for Al2Cu, Al4Cu9 and AlCu, respectively [13].…”

Section: Introductionmentioning

confidence: 99%

Investigation of the early stage of reactive interdiffusion in the Cu-Al system by in-situ transmission electron microscopy

2020

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The early stage of the reactive interdiffusion in the Cu-Al system was investigated at 350°C and 300°C thanks to in-situ transmission electron microscopy. A special care was given to find conditions where the electron beam and the sample free surface do not affect significantly the reaction. A special emphasis was then given on the influence of grain boundaries that are fast diffusion paths, and on nanoscaled particles that may interact with the transformation front. It was found that there is a transient state followed by a steady state where the mean growth rates of intermetallic compounds follow a parabolic law indicating that the kinetics is diffusion controlled. Thanks to the in-situ observations at the nanoscale, it was also possible to track the local velocity of interfaces between the different phases. Strong fluctuations were exhibited within length scales smaller than 100nm and they are partly attributed to interface pinning by nanoscaled particles. Last, considering thermodynamic and kinetic arguments, it is shown that it is mainly an indirect effect induced by a local change of solute fluxes and of concentration gradients.

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“…up to 20 turns [38] under 6.0 GPa at RT where the disks were stacked alternately in the order of Al/Mg/Al without any adhesive treatments, as shown in Figure 4. [35] This procedure of HPT processing was further applied for several different metal combinations by stacking two disks of Al/Mg [39] and three disks of Al/Cu/Al, [40] Al/Fe/Al, [41] Al/Ti/Al, [41] Cu/Al/Cu, [42] Cu/ZnO/ Cu, [43] Zn/Mg/Zn, [44] Fe/V/Fe, [45,46] and V-10Ti-5Cr/Zr-2.5Nb/ V-10Ti-5Cr. [47] It should be noted that some of these listed combinations of dissimilar metals for mechanical bonding by HPT use different sample volumes by changing the disk thicknesses.…”

Section: Mechanical Bonding Of Dissimilar Metals and Alloys By Hptmentioning

confidence: 99%

Synthesis of Hybrid Nanocrystalline Alloys by Mechanical Bonding through High‐Pressure Torsion

et al. 2020

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An overview of the mechanical bonding of dissimilar bulk engineering metals through high‐pressure torsion (HPT) processing at room temperature is described in this Review. A recently developed procedure of mechanical bonding involves the application of conventional HPT processing to alternately stacked two or more disks of dissimilar metals. A macroscale microstructural evolution involves the concept of making tribomaterials and, for some dissimilar metal combinations, microscale microstructural changes demonstrate the synthesis of metal matrix nanocomposites (MMNCs) through the nucleation of nanoscale intermetallic compounds within the nanostructured metal matrix. Further straining by HPT during mechanical bonding provides an opportunity to introduce limited amorphous phases and a bulk metastable state. The mechanically bonded nanostructured hybrid alloys exhibit an exceptionally high specific strength and an enhanced plasticity. These experimental findings suggest a potential for using mechanical bonding for simply and expeditiously fabricating a wide range of new alloy systems by HPT processing.

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An approach for fabrication of Al-Cu composite by high pressure torsion

Cited by 56 publications

References 28 publications

Experimental Description of the Al-Cu Binary Phase Diagram

Experimental Description of the Al-Cu Binary Phase Diagram

Investigation of the early stage of reactive interdiffusion in the Cu-Al system by in-situ transmission electron microscopy

Synthesis of Hybrid Nanocrystalline Alloys by Mechanical Bonding through High‐Pressure Torsion

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