Mechanical analysis of the effects of different mechanical alloying periods on Ni3Al intermetallic compound fabrication quality

Tan, K.H. and Johan, M.R. and Ahmad, R. and Kadri, N.A. and Zain, N.M. and Arof, Abdul Kariem (2012) Mechanical analysis of the effects of different mechanical alloying periods on Ni3Al intermetallic compound fabrication quality. International Journal of Electrochemical Science, 7 (4). pp. 3765-3772. ISSN 1452-3981

Full text not available from this repository. (Request a copy)
Official URL: http://www.electrochemsci.org/papers/vol7/7043765....

Abstract

Ni and Al elemental powder mixtures with composition Ni75Al25 (at ) were mechanically alloyed in a planetary ball mill under different mechanical alloying (MA) durations. X-ray diffraction (XRD), scanning electron microscope (SEM) and simultaneous thermal analysis (STA) were conducted to study phase transformations, morphology changes and thermal property of Ni-Al mixture during MA. Ni3Al intermetallic compound was formed successfully after 10h of milling, which was the shortest formation period that ever reported for this intermetallic compound. The nanocrystalline Ni3Al with the lowest crystallite size of 12.6nm was synthesized. Refinement of crystallite size with increasing internal strain was significant as milling duration was increased gradually. During formation of the Ni3Al, the powder particles have undergone incidents of welding, microforging, fracturing, rewelding and agglomeration.

Item Type: Article
Uncontrolled Keywords: Intermetallics; Mechanical alloying; Mechanical analysis; Ni-Al alloy
Subjects: T Technology > T Technology (General)
Divisions: Faculty of Engineering
Depositing User: Mr. Mohammed Salim Abd Rahman
Date Deposited: 07 Mar 2013 02:40
Last Modified: 04 Oct 2018 08:52
URI: http://eprints.um.edu.my/id/eprint/5040

Actions (login required)

View Item View Item