Open AccessPreparing Composite Materials from Commercially Pure Aluminum Scrap and Reinforced with Iraqi Sand
Author(s) -
Mohammed Abdullateef A. Al-Kazragy
Publication year - 2017
Publication title -
mağallaẗ tikrīt li-l-ʻulūm al-handasiyyaẗ/tikrit journal of engineering sciences
Language(s) - English
Resource type - Journals
eISSN - 2312-7589
pISSN - 1813-162X
DOI - 10.25130/tjes.24.2.07
Subject(s) - materials science , scrap , metallurgy , microstructure , composite number , corrosion , composite material , aluminium , alloy , wetting
This paper deals with reusing commercially pure aluminum scrap 1100 by converting it toaluminum-based composite reinforced material by using Iraqi silica sand. The sand is preparedand added in weight percentage of 1% and 2%. It is grain size ranges between 50 -75 um.Wettability of the mixture was increased by adding 2gm of pure magnesium. A special electricmixer was used to disperse silica sand grains to support aluminum scrap melt (matrix).Then the composite pieces were cut to samples suitable for tension, compression,hardness, wear, impact, corrosion resistance (in sea water) and microstructure inspection. Thetests have shown that the composite has more resistance to tension, compression, hardness,and wear than the base alloy. This is because sand particles are dispersed uniformly (uniformlydistributed throughout the cast) which hinder the movement of the dislocations slip plane. Onthe other hand, the resistance to impact and corrosion (in sea water for one month) decreasedslightly. In wear resistance test, pin-on-desk was used where load, sliding speed, and slidedistance were kept constant. Microstructure inspection on the base alloy and the compositematerials were made before and after corrosion for comparison between them.