Fabrication of nanostructured Al-Al4C3 alloys.

• Autorzy: Enayati M. H. , Rahmani Z.
• Konferencja: International Conference on Fabrication and Properties of Metallic Nanomaterials, Warsaw, 17-19 June, 2004.
• Języki publikacji: EN

Abstrakty

EN

Aluminium and graphite elemental powder mixtures containing 2.2 and 4.5 wt. % graphite were milled using a planetary ball mill in order to produce nanostructured Al-Al4C3 alloys. The structural evolution of powder particles was studied by x-ray diffractometry and hardness measurements. The results showed that Al4C3 compound could not be synthesized only by milling process. A suitable subsequent heat treatment was required to allow Al-graphite reaction to take place kinetically. The heat treatment time and/or temperature decreased as milling time increased. Milling process also leads to the refinement of aluminium grain size to a nanoscale size of ~25 nm. This structure remainded unchanged upon heating due to the formation of Al4C3 particles, which hinder the grain growth process. The Al4C3 particles formed during heat treatment had a size of ~15 nm causing a remarkable increase in hardness of Al matrix.

Słowa kluczowe

EN

nanostructure; graphite; aluminium alloy

PL

nanostruktura; grafit; stop aluminium

• Wydawca: Komitet Nauki o Materiałach PAN
• Czasopismo: Archives of Materials Science
• Rocznik: 2004
• Tom: Vol. 25, nr 4
• Strony: 515--521

Twórcy

autor

Enayati M. H.

• Department of Materials Engineering, Ishafan University of Technology, Isfahan 8415483111, Iran

autor

Rahmani Z.

• Department of Materials Engineering, Ishafan University of Technology, Isfahan 8415483111, Iran

• Department of Materials Engineering, Ishafan University of Technology, Isfahan 8415483111, Iran

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