Title :
Preparation of Al-Fe/TiB2 nanocomposite powder by ball milling and subsequent heat treatment
Author :
Jazi, E. Haghshenas ; Borhani, G. ; Farsani, R. Esalmi
Author_Institution :
Dept. of Mater. Eng., K.N. Toosi Univ. of Technol., Tehran, Iran
fDate :
5/1/2012 12:00:00 AM
Abstract :
In this study, mechanical alloying (MA) was used to synthesise Al-Fe/TiB2 nanocomposites using aluminium, ferrotitanium and acid boric as raw materials. The powders were mixed and subjected to MA in an attritor ball mill under argon (Ar) atmosphere. Then, the milled powders were heat-treated under Ar atmosphere. The phase transformation, microstructure and morphology of MA powders were investigated by X-ray diffraction and scanning electron microscopy. The results showed that the heat-treated powders lead to the in situ formation of nanosized TiB2 particles in the Al matrix with an average grain size of 45 nm. It was also found that after heat-treating, TiB2 phase and other intermetallics such as Al13Fe4 and Al3Ti have been formed.
Keywords :
X-ray diffraction; aluminium alloys; ball milling; grain size; heat treatment; iron alloys; mechanical alloying; nanocomposites; nanofabrication; nanoparticles; particle reinforced composites; scanning electron microscopy; solid-state phase transformations; titanium compounds; AlFe-TiB2; X-ray diffraction; argon atmosphere; attritor ball mill; ball milling; ferrotitanium; grain size; heat-treated powders; mechanical alloying; microstructure; milled powders; nanocomposite powder; nanosized particles; phase transformation; raw materials; scanning electron microscopy;
Journal_Title :
Micro & Nano Letters, IET
DOI :
10.1049/mnl.2012.0082
