MECHANICAL AND WEAR CHARACTERISTICS OF ALUMINIUM BRASS
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Date
2017
Authors
Esezobor, D.E.
Agbeleye, A.A.
Onovo, H.O.
Bodude, M.A.
Journal Title
Journal ISSN
Volume Title
Publisher
Unilag Journal of Medicine, Science and Technology (UJMST)
Abstract
In this paper, the influence of the processing parameters on the wear and mechanical
properties of 5 – 12 % aluminum red brass (Al-brass) was studied. The wear
characteristics of developed Al brass in dry sliding conditions were exposed through a
series of pin-on-disc sliding wear tests. Three load levels of 2, 7 and 12N, sliding speeds
of 125 and 250 rpm and two sliding distances of 392.7 and 785.4m were investigated.
The mechanical properties of the Al brass were determined using standard techniques.
The results showed an increase in tensile strength from 225 MPa at 5 % aluminum
addition to a maximum of 248 MPa at 10% Al and then a decline to 240 MPa at 12 % Al.
The peak stress value increases as the weight percentage composition of Al increases
until at 11%Al when it reduces. The impact energy and the hardness values of the as-cast
Al brass rose from 54.2 Joules and 81HRC to 122 Joules and 92.4 HRC respectively at
12 % aluminum addition. At lower load of 2N, the addition of 5 % of Al brought a drastic
improvement (65 %) to the wear resistance at 125 rpm and 250rpm, but the improvement
became consistent thereafter. The same trends occurred at load of 7 N, but with lower
degree of improvement (approximately 40 %). In contrast, under higher load of 12 N, the
addition of Al brought slight and consistent improvement (10 -15 %) to the wear
resistance.
Description
Keywords
Copper, Mass-loss, Strength, Wear
Citation
Esezobor, D.E. ; Agbeleye, A.A. ; Onovo, H.O. ; Bodude, M.A. (2017). Mechanical AND wear characteristics of aluminum brass, Unilag Journal of Medicine, Science and Technology (UJMST), 5(1): 72-81