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HomeMaterials Science ForumMaterials Science Forum Vols. 727-728Structural Comparison of Amorphous,...

Structural Comparison of Amorphous, Nanocrystalline and Microcrystalline Al₉₀Fe₇Nb₃ Alloys

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Abstract:

This work presents the structural comparison of Al₉₀Fe₇Nb₃ alloys obtained by different techniques: (i) partly amorphous powder alloy produced by mechanical milling and their consolidation by hot extrusion (cylindrical bar), (ii) from millimeter portion by casting centrifuged system (square shape), and (iii) from millimeter portion by melt-spinning (ribbon shape). The cylindrical consolidated alloy presented an Al matrix with Al₃Nb and Al₁₃Fe₄ nanophases (intermetallic compounds), the square consolidated alloy resulted in the same structure composed of Al matrix with Al₃Nb and Al₁₃Fe₄ in micro-phase scale. On the other hand, the ribbon alloy exhibits an amorphous matrix with primary Al nanocrystals (fcc-Al phase).

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Advanced Powder Technology VIII

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Periodical:

Materials Science Forum (Volumes 727-728)

Pages:

3-8

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.727-728.3

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Online since:

August 2012

Authors:

C.A.D. Rodrigues, Walter José Botta Filho, G. Tremiliosi-Filho

Keywords:

Al Alloy, Amorphous, Casting Centrifuged, Hot Extrusion, Melt-Spinning, Microstructure, Nanostructure

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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