Title

Development Of New Al-Based Nanocomposites By Mechanical Alloying

Keywords

Intermetallics; Mechanical alloying; Nanocomposites; Transmission electron microscopy; X-ray diffraction

Abstract

Al-based binary (Al-Mg) and ternary (Al-Mg-Zr) elemental powder mixtures were mechanically alloyed to develop new Al-Mg-Zr nanocomposite materials. The phase evolution was studied in the as-milled and heat-treated powders by XRD and TEM/EDS analyses. For the binary Al-Mg alloy, the predominant phase was an Al(Mg) solid solution (SS) and an amorphous phase was not possible to be synthesized. Upon adding 5 at.% Zr to the Al-10Mg blended powder, some free Mg was present in addition to the formation of an Al(Zr,Mg)SS, which transformed to the Al3Zr intermetallic after annealing. When the Zr content was increased a nanocomposite of a solid solution and an intermetallic was obtained with considerable improvement in terms of structural stability and hardness. The presence of an oxide phase at 35% Zr might be responsible for the increased hardness in this particular alloy. © 2007 Elsevier B.V. All rights reserved.

Publication Date

5-15-2008

Publication Title

Materials Science and Engineering A

Volume

480

Issue

1-2

Number of Pages

392-396

Document Type

Article

Personal Identifier

scopus

DOI Link

https://doi.org/10.1016/j.msea.2007.09.060

Socpus ID

41249103617 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/41249103617

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