The use of Nb in rapid solidified Al alloys and composites

Audebert, F.; Galano, M.; Saporiti, F.

doi:10.1016/j.jallcom.2013.12.129

Cited by 14 publications

(12 citation statements)

References 36 publications

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“…Galano, Audebert, Stone, Prima, Tomut and Cantor [35][36][37][38][39][40][41][42][43][44][45] investigated the structure of a wide range of melt spun alloys in the AlFeCrTiVNbTa system. The alloys were based on the generic formula Al93Fe3Cr2ETM2 where ETM is an early transition metal.…”

Section: Melt Spun Microstructuresmentioning

confidence: 99%

Multicomponent and High Entropy Alloys

Cantor

2014

Entropy

501

187

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This paper describes some underlying principles of multicomponent and high entropy alloys, and gives some examples of these materials. Different types of multicomponent alloy and different methods of accessing multicomponent phase space are discussed. The alloys were manufactured by conventional and high speed solidification techniques, and their macroscopic, microscopic and nanoscale structures were studied by optical, X-ray and electron microscope methods. They exhibit a variety of amorphous, quasicrystalline, dendritic and eutectic structures.Keywords: alloying strategy; amorphous alloys; fcc single phase; Gibbs phase rule; high entropy alloys; icosahedral phase; multicomponent alloys; quasicrystals; solid solubility Multicomponent Alloys Alloying StrategiesThe conventional way of developing a new material is to select the main component based upon some primary property requirement, and to use alloying additions to confer secondary properties. This strategy has led to many successful multicomponent materials with a good balance of engineering properties. Typical examples include high-temperature nickel superalloys and corrosion-resistant stainless steels. In some cases two principal components are used, such as in copper-zinc brasses or alumino-silicate refractories.Cantor [1] was the first to point out that this kind of conventional alloying strategy leads to an enormous amount of knowledge about materials based on one or sometimes two components, but little or no knowledge about materials containing several main components in approximately equal proportions. Information and understanding about alloys close to the corners and edges of a OPEN ACCESS

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Section: Melt Spun Microstructuresmentioning

confidence: 99%

Multicomponent and High Entropy Alloys

Cantor

2014

Entropy

501

187

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“…This type of amorphous phase can be observed in alloys with large fraction of the main component of the alloy, for example in Al-or Mg-based alloys 23 . F. Audebert & col. have studied several Al-Fe and Al-Ni based alloys with Al content higher than 85at% [23][24][25][26][27] . They found that amorphous phases with this heterogeneous characteristic show a pre-peak at low angle in the X-ray diffractogram, which is related with the strong chemical short range order due to the hetero-atomic clusters.…”

mentioning

confidence: 99%

Effect of Al addition to Rapidly Solidified Mg-Cu-Rare Earth Alloys

et al. 2016

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Rapidly solidified Mg based alloys are of interest for industrial applications as a structural material and for hydrogen storage. Mg-Cu-Rare Earth alloys have shown high glass forming ability; full amorphous structure with thickness of mm size can be obtained within these systems. However, their brittle behavior limits their industrial applications. In the present work, the Al effect in substitution of Cu in the Mg 65 Cu 25 MM 10 (at%, MM: mischmetal) was studied. Samples up to 15at% Al were prepared by splat cooling and their microstructure, stability and mechanical properties were characterised. The crystallization temperature increases with the Al addition; the amorphous phase with different Al content has a Young's modulus of ~55GPa; the microhardness increases with the Al content in the amorphous and crystallized samples and the fracture of the alloy containing 10at% Al showed ductile vein patterns characteristics of ductile metallic glasses. The partial Cu substitution by Al can improve the stability and mechanical properties of the amorphous Mg 65 Cu 25 MM 10 alloy.

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“…In the recent literature, several authors have reported studies that aimed at finding alloying elements that would increase thermal stability of quasicrystals. Audebert, Galano and collaborators have performed extensive work on developing Al-Fe-Cr-based alloys with nanoquasicrystalline phases embedded in an Al-FCC matrix with improved mechanical and thermal properties [7,13,35,83,84,85]. The Al-Fe-Cr system forms nanometric icosahedral precipitates embedded in an Al-FCC matrix when rapidly solidified in specific chemical compositions, such as Al 93 Fe 4.2 Cr 2.8 [13] (%at.).…”

Section: Al-matrix Mmcs Reinforced With Nano-sized Quasicrystalsmentioning

confidence: 99%

Recent developments on fabrication of Al‐matrix composites reinforced with quasicrystals: From metastable to conventional processing

Wolf

Bolfarini

Kiminami

2021

Journal of Materials Research

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Quasicrystalline alloys and their composites have been extensively studied due to their complex atomic structures, mechanical properties, and their unique tribological and thermal behaviors. However, technological applications of these materials have not yet come of age and still require additional developments. In this review, we discuss the recent advances that have been made in the last years toward optimizing fabrication processes and properties of Al‐matrix composites reinforced with quasicrystals. We discuss in detail the high‐strength rapid‐solidified nanoquasicrystalline composites, the challenges involved in their manufacturing processes and their properties. We also bring the latest findings on the fabrication of Al‐matrix composites reinforced with quasicrystals by powder metallurgy and by conventional metallurgical processes. We show that substantial developments were made over the last decade and discuss possible future studies that may result from these recent findings.

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The use of Nb in rapid solidified Al alloys and composites

Cited by 14 publications

References 36 publications

Multicomponent and High Entropy Alloys

Multicomponent and High Entropy Alloys

Effect of Al addition to Rapidly Solidified Mg-Cu-Rare Earth Alloys

Recent developments on fabrication of Al‐matrix composites reinforced with quasicrystals: From metastable to conventional processing

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