Al/Ni metal intermetallic composite produced by accumulative roll bonding and reaction annealing

Mozaffari, Abolfazl; Hosseini, Morteza; Manesh, H. Danesh

doi:10.1016/j.jallcom.2011.07.103

Cited by 63 publications

(29 citation statements)

References 24 publications

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“…Therefore, it can be ascertained that in the case under investigation intermetallic nucleation at room temperature did not occur, even not after a cold rolling reduction of 90% (ε = 2.66), cf. Figure 4, which is in agreement with most studies on the formation of intermetallic phases during the CRB process after varying amounts of strain [2,7,18,27,[38][39][40].…”

Section: Phase Formation Mechanism: Phase Evolution During the Fabricsupporting

confidence: 90%

“…Ultimately, the intermetallic compound Literature reports of the intermetallic formation mechanism in Al-Ni system emphasize on the composites, which were fabricated through ARB or F&R and subsequent annealing. It has been recognized that intermetallic phases are formed by nucleation and growth [7,24,27,33], which was concluded from differential scanning calorimetry (DSC) analysis [7,24,33], 3D atomic probe microscopy across the interface [27] and SEM micrographs [7]. In the ARB process, the intermixing of components occurred between multilayers during several cycles and it gave rise to the formation of an Al-Ni solid solution [27].…”

Section: Phase Formation Mechanism: Phase Evolution During the Fabricmentioning

confidence: 99%

“…Previous reports [1,[3][4][5][6][7][8][9] have revealed that these materials can be produced by various manufacturing techniques, which can be categorized in the two main groups of deposition and bonding. Deposition techniques such as electrodeposition, evaporation, and sputtering involve atomic scale transport of the component materials.…”

Section: Introductionmentioning

confidence: 99%

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The Effect of Strain on the Formation of an Intermetallic Layer in an Al-Ni Laminated Composite

Azimi

Toroghinejad

Shamanian

et al. 2017

Metals

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Abstract:In the present work, the influence of strain on phase formation at the Al/Ni interface was investigated during cold roll bonding and annealing. A sandwich sample composed of an Al-Ni-Al stack was cold rolled with reductions in the range of 50% to 90%, followed by annealing at 450 • C for 60 min. The crystallography of the annealed sandwich samples was analyzed by XRD (X-ray diffraction), whereas the microstructure was studied by scanning electron microscopy, equipped with EDS (energy dispersive spectrometer) analysis, and optical microscope. In the annealed samples, the intermetallic phase Al 3 Ni has formed at the Ni/Al interface, preferentially on the Al side of the interface. It is found that the applied strains did not have an effect on the type of intermetallic phase that was formed. However, the rolling reduction has a significant effect on the morphology of the intermetallic layer, as it was observed that after the lowest reduction of 50% only some scattered intermetallic nuclei were present, whereas at the highest rolling reduction of 90% a continuous intermetallic layer of 4.1 µm was exhibited. The formation of the intermetallic layer is discussed in terms of Al and Ni diffusion at the interface and irregular nature of the Al/Ni bonded interface after rolling reductions.

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Section: Phase Formation Mechanism: Phase Evolution During the Fabricsupporting

confidence: 90%

Section: Phase Formation Mechanism: Phase Evolution During the Fabricmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of Strain on the Formation of an Intermetallic Layer in an Al-Ni Laminated Composite

Azimi

Toroghinejad

Shamanian

et al. 2017

Metals

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“…Since the technique of magnetron sputtering suffers from such drawbacks as low productivity, high cost, and limited circle of proper reagents, another process — multiple cold rolling technique, also named as Accumulative Roll Bonding (ARB) process — has been proposed as an alternative to magnetron sputtering. The mechanical methods afforded for production of nano‐ and micro‐scale laminates in the mixtures of incompatible inert or reactive metals.…”

Section: Introductionmentioning

confidence: 99%

Gasless Reactive Compositions for Materials Joining: An Overview

et al. 2018

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Some results of recent studies on materials joining by using exothermic reactive compositions that burn without notable gas evolution are overviewed. We also considered some possible routes to controlling wave propagation velocity in conditions of strong heat sink, to lowering ignition temperature for exothermic combustion reactions, and to improving the adhesion strength. The use of exothermic powder compositions opens up new horizons for combustion-aided joining of materials, including refractory and dissimilar ones. Further advance in the field can be reached through mechanical activation (nanostucturing) of green compositions in ball mills and by cold rolling of reactive mixtures to fabricate reactive tapes. The examples of joining carbon materials, metals, and ceramic-metal pairs were presented. To date, the technique of combustion-assisted joining of materials has become a promising and rapidly developing branch of modern R & D.

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“…For the SPD processing, several different techniques have been developed such as equal-channel angular pressing [10,11], twist extrusion [12], accumulative roll-bonding [13,14] and high-pressure torsion (HPT) [15][16][17][18]. Among them, the HPT process may be the best because it is capable of significant grain refinement to the nanometre level [15][16][17][18][19][20] and is applicable to many metals and alloys including less ductile materials such as intermetallics [21,22] and ceramics [23].…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature on solid-state formation of bulk nanograined intermetallic Al₃Ni during high-pressure torsion

Alhamidi

Edalati

Iwaoka

et al. 2014

Philosophical Magazine

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A bulk form of nanograined intermetallic Al 3 Ni was produced by severe plastic deformation using high-pressure torsion (HPT). Powder mixtures of 75 mol% Al and 25 mol% Ni were processed by HPT at a selected temperature in the range of room temperature (RT) to 573 K under a pressure of 6 GPa. X-ray diffraction analysis revealed that the Al 3 Ni intermetallic formed after processing for 50 revolutions at RT but, as the processing temperature increased, less revolutions (i.e. lower imposed strain) were required for the formation of Al 3 Ni. Observations by transmission electron microscopy showed that the microstructure consists of ultrafine grains having a size of 300-2000 nm after 3 and 10 revolutions. Once the Al 3 Ni formed after a higher number of revolutions, equiaxed nanograins with a size of~30 nm prevailed with a significant increase in hardness. The increase in hardness was more significant when processed at higher temperatures because of increasing the fraction of Al 3 Ni. It was shown that the solid-state formation of Al 3 Ni occurred due to enhanced diffusion (i.e. decreased activation energy for diffusion) through the presence of high density of lattice defects.

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Al/Ni metal intermetallic composite produced by accumulative roll bonding and reaction annealing

Cited by 63 publications

References 24 publications

The Effect of Strain on the Formation of an Intermetallic Layer in an Al-Ni Laminated Composite

The Effect of Strain on the Formation of an Intermetallic Layer in an Al-Ni Laminated Composite

Gasless Reactive Compositions for Materials Joining: An Overview

Effect of temperature on solid-state formation of bulk nanograined intermetallic Al₃Ni during high-pressure torsion

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Al/Ni metal intermetallic composite produced by accumulative roll bonding and reaction annealing

Cited by 63 publications

References 24 publications

The Effect of Strain on the Formation of an Intermetallic Layer in an Al-Ni Laminated Composite

The Effect of Strain on the Formation of an Intermetallic Layer in an Al-Ni Laminated Composite

Gasless Reactive Compositions for Materials Joining: An Overview

Effect of temperature on solid-state formation of bulk nanograined intermetallic Al3Ni during high-pressure torsion

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Product

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Effect of temperature on solid-state formation of bulk nanograined intermetallic Al₃Ni during high-pressure torsion