The microstructure and mechanical properties of Fe–Cu materials fabricated by pressure-less-shaping of nanocrystalline powders

Maggio, R. Di; Ischia, Gloria; Bortolotti, Mauro; Rossi, Federico; Molinari, A.

doi:10.1007/s10853-007-1892-3

Cited by 17 publications

(5 citation statements)

References 18 publications

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“…Due to novel properties of materials fabricated out of typically immiscible alloys, like high thermal and electrical conductivity and excellent magnetic properties (i.e. high magnetoresistance and coercivity), a long-standing interest in the preparation of such alloys exists [1–3] . The formation of metastable phases in alloy systems with a negative heat of mixing as well as positive heat of mixing has been intensively investigated in recent years [3–6] .…”

Section: Introductionmentioning

confidence: 99%

The formation of supersaturated solid solutions in Fe–Cu alloys deformed by high-pressure torsion

et al. 2012

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Fully dense bulk nanocomposites have been obtained by a novel two-step severe plastic deformation process in the immiscible Fe–Cu system. Elemental micrometer-sized Cu and Fe powders were first mixed in different compositions and subsequently high-pressure-torsion-consolidated and deformed in a two-step deformation process. Scanning electron microscopy, X-ray diffraction and atom probe investigations were performed to study the evolving far-from-equilibrium nanostructures which were observed at all compositions. For lower and higher Cu contents complete solid solutions of Cu in Fe and Fe in Cu, respectively, are obtained. In the near 50% regime a solid solution face-centred cubic and solid solution body-centred cubic nanograined composite has been formed. After an annealing treatment, these solid solutions decompose and form two-phase nanostructured Fe–Cu composites with a high hardness and an enhanced thermal stability. The grain size of the composites retained nanocrystalline up to high annealing temperatures.

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Section: Introductionmentioning

confidence: 99%

The formation of supersaturated solid solutions in Fe–Cu alloys deformed by high-pressure torsion

et al. 2012

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“…The relatively small difference of copper and iron melting points (about 450 ℃) creates a proper overlap to determine the sintering temperature. 17–19…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental analysis of Cu–Fe functionally graded beam subjected to tensile loading

Torabian

Khalili

2020

Proceedings of the Institution of Mechanical Engineers, Part C:

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Functionally graded materials are new types of composites with heterogeneous microstructure in which some particular physical and mechanical properties change continuously in the thickness direction. In this research, a five-layer copper–iron functionally graded material was fabricated by changing the composition of the layers in a stepwise function between copper and iron using powder metallurgy method. The effect of fabrication process on the microstructure and tensile strength of functionally graded beam was investigated by using two types of presses: uniaxial press and cold iso-static press. Microscopic studies demonstrated appropriate connections between the layers and particles. To achieve ultimate tensile strength and strain, functionally graded copper–iron specimens were tested in tensile loading. The stress–strain graphs obtained from the test showed enhancement in tensile strength of copper and iron functionally graded beam compared to pure copper and iron beams. Finally, a model of this functionally graded material was analysed in ABAQUS finite element code, and the results were verified by experimental tests. Therefore, the present finite element model would be useful to investigate tensile behaviour of functionally graded materials.

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“…For the Cu-Fe contact materials, better strength, electrical conductivity, wear resistance and corrosion resistance properties should be of primary consideration 15 . There are already some attempts 16,17 on preparation techniques for producing stronger, more ductile and higher conductive Cu-Fe alloys. However, few attentions have been paid to the effect of the HCPEB technique on the surface modification of Cu-Fe alloys, in spite of its well testified effectiveness for other metallic materials [18][19][20] .…”

Section: Introductionmentioning

confidence: 99%

Surface Modification of Aluminized Cu-10Fe Alloy by High Current Pulsed Electron Beam

et al. 2016

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A Cu-10Fe alloy with magnetron sputtered Al films was irradiated by high current pulsed electron beam (HCPEB) with various pulse numbers, next changes of its microstructure and corrosion property were investigated. Compared with the initial sample, microhardness and corrosion resistance of the aluminized Cu-10Fe alloys after the HCPEB treatment are remarkably improved with increasing pulse numbers. This improvement could be attributed to formation of Al 2 Cu intermetallic compounds, occurrence of liquid phase separation and grain refinement in the surface layer of the Cu-10Fe alloy during the process of rapid remelting and solidification induced by the HCPEB treatment.

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The microstructure and mechanical properties of Fe–Cu materials fabricated by pressure-less-shaping of nanocrystalline powders

Cited by 17 publications

References 18 publications

The formation of supersaturated solid solutions in Fe–Cu alloys deformed by high-pressure torsion

The formation of supersaturated solid solutions in Fe–Cu alloys deformed by high-pressure torsion

Numerical and experimental analysis of Cu–Fe functionally graded beam subjected to tensile loading

Surface Modification of Aluminized Cu-10Fe Alloy by High Current Pulsed Electron Beam

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