Table of Contents
Indian Journal of Materials Science
Volume 2016, Article ID 7981864, 6 pages
http://dx.doi.org/10.1155/2016/7981864
Research Article

Influence of Milling Media on the Mechanical Alloyed W-0.5 wt. Ti Powder Alloy

1Particulate Materials Laboratories (PML), Department of Metallurgical and Materials Engineering, Faculty of Chemical-Metallurgical Engineering, Istanbul Technical University, Ayazağa Campus, 34469 Istanbul, Turkey
2Department of Mechanical Engineering, Faculty of Engineering, Hakkari University, 30000 Hakkari, Turkey

Received 3 April 2016; Accepted 14 July 2016

Academic Editor: Debdulal Das

Copyright © 2016 Hadi Jahangiri et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The effects of milling atmosphere and mechanical alloying (MA) duration on the effective lattice parameter, crystallite size, lattice strain, and amorphization rate of the W-0.5 wt. Ti powders were investigated. W-0.5 wt. Ti powders were mechanically alloyed (MA’d) for 10 h and 20 h in a high energy ball mill. Moreover, morphology of the powders for various MA was analyzed using SEM microscopy. Their powder density was also measured by helium pycnometer. The dry milled agglomerated powders have spherical particle, while wet milled powders have layered morphology. Milling media and increasing of milling time significantly reduce the crystallite size. The smallest crystallite size is 4.93 nm which belonged to the dry milled powders measured by Lorentzian method after 20 hours’ MA. However, after 20 hours, MA’d powders show the biggest crystallite size, as big as 57.07 nm, measured with the same method in ethanol.