Cover Page February-2013, Current Issue-Advanced Materials Letters

Advanced Materials Letters

Volume 4, Issue 2, Pages 164-168, February 2013, Current Issue
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Influence Of Mixing Technique On Sintering response Of Binary Aluminium Alloy Powders

N. B. Dhokey1*, V. A. Athavale1, N. Narkhede2, M. Kamble2

1Department of Metallurgical Engineering, Govt. College of Engineering, Pune 411005, India

2Aluminium Sintered Products Pvt. Ltd., Chakan, Pune, India

Adv. Mater. Lett., 2013, Current Issue, 4 (2), pp 164-168

DOI: 10.5185/amlett.2012.6369

Publication Date (Web): Dec 09, 2012

E-mail: nbdhokey@yahoo.co.in

Abstract

Aluminium powder metallurgy (Al-PM) alloys are finding promising applications in many areas such as household appliances, automotive vehicles and many other allied sections where reduction in weight is the primary constraint. In the proposed research, two binary alloy systems Al-X were studied by mixing elemental powders of Aluminium (Al), Tin (Sn) and Magnesium (Mg). Two types of mixing techniques were followed. In one case, elemental powders were blended in a mechanical mixer without any mixing media (A) and another case powders were blended with ball to powder ratio of 10:1 (B). The content in binary premix was varied from 0.4 to 0.8 % Sn (by wt.) and 0.5 to 2 % Mg (by wt.) with base of Aluminium. The blended powders was compacted at 450 MPa followed by sintering in ultra high purity nitrogen atmosphere in tubular sintering furnace at 600oC. The mixing technique B showed significant influence on increase in hardness by two-fold and reduction in dimensional growth.

Keywords

Powder metallurgy, aluminium, liquid phase sintering, Al-Sn system, Al-Mg system, mixing techniques.

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