Paper Title:
Structure and Properties of PM Nano-Crystalline Al-Cr based Alloys
  Abstract

In the presented paper, properties of Al-Cr-Fe-Ti alloy produced by powder metallurgy (PM) are described. Rapidly solidified powder alloy was prepared by the pressure nitrogen melt atomization. The granulometric powder fraction of less than 45 μm was then hot-extruded. Microstructure of the as-extruded material comprised recrystallized α-Al grains and spheroids of intermetallic phases. Tensile strength of the investigated material was similar to that of a conventional casting Al-Si alloy commonly used in elevated temperature applications. Excellent thermal stability of the PM Al-Cr based material, which much exceeded the elevated temperature casting alloy, was proved by room temperature tensile tests after long-term annealing at elevated temperature. Reasons for the observed thermal stability of the investigated PM alloy are discussed.

  Info
Periodical
Materials Science Forum (Volumes 567-568)
Edited by
Pavel Šandera
Pages
197-200
DOI
10.4028/www.scientific.net/MSF.567-568.197
Citation
D. Vojtěch, A. Michalcová, J. Verner, J. Šerák, F. Šimančík, M. Balog, J. Nagy, "Structure and Properties of PM Nano-Crystalline Al-Cr based Alloys ", Materials Science Forum, Vols. 567-568, pp. 197-200, 2008
Online since
December 2007
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Price
$32.00
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