Wear Properties of A356/Al 2O 3 metal matrix composites produced by semisolid processing

K. S. Alhawari, Mohd. Zaidi Omar, Mariyam Jameelah Ghazali, M. S. Salleh, M. N. Mohammed

Research output: Chapter in Book/Report/Conference proceedingConference contribution

20 Citations (Scopus)

Abstract

In this study, A356/Al 2O 3 metal matrix composites were fabricated by conventional stirring and semisolid processing (combination of mechanical stirring in the mushy zone and cooling slope casting) and these composites were subjected to wear tests. The composites containing various weight fractions of Al 2O 3 particles (1%, 2.5% and 5%) were used in both conventional and rheocasting processes. In conventional stirring, the primary phase remained dendritic while in rheocasting the dendritic primary phase transformed into a globular microstructure. The influences of these processes on the hardness and wear behaviour of the composites were investigated. A pin-on-disc tribometer was used to carry out tribological tests under dry sliding conditions in air. Wear tests were carried out at 1.0 m/s sliding speed under a 20N load and four different sliding distances. A scanning electron microscope was used to examine the wear mechanism on the worn surfaces of the composites. The results showed that the volume loss of the composites produced by semisolid processing was lower than that of those produced by conventional casting. Based on wear rate ranges, all metal matrix composites exhibited moderate wear regimes. The dominant wear mechanism for all materials was ploughing, with some delimitation.

Original languageEnglish
Title of host publicationProcedia Engineering
PublisherElsevier Ltd
Pages186-192
Number of pages7
Volume68
DOIs
Publication statusPublished - 2013
Event2013 1st Malaysian International Tribology Conference, MITC 2013 - Kota Kinabalu, Sabah, Malaysia
Duration: 18 Nov 201320 Nov 2013

Other

Other2013 1st Malaysian International Tribology Conference, MITC 2013
CountryMalaysia
CityKota Kinabalu, Sabah
Period18/11/1320/11/13

Fingerprint

Wear of materials
Composite materials
Processing
Metals
Rheocasting
Casting
Electron microscopes
Hardness
Cooling
Scanning
Microstructure
Air

Keywords

  • Conventional stirring
  • Cooling slope casting
  • Tribological properties

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Alhawari, K. S., Omar, M. Z., Ghazali, M. J., Salleh, M. S., & Mohammed, M. N. (2013). Wear Properties of A356/Al 2O 3 metal matrix composites produced by semisolid processing In Procedia Engineering (Vol. 68, pp. 186-192). Elsevier Ltd. https://doi.org/10.1016/j.proeng.2013.12.166

Wear Properties of A356/Al 2O 3 metal matrix composites produced by semisolid processing . / Alhawari, K. S.; Omar, Mohd. Zaidi; Ghazali, Mariyam Jameelah; Salleh, M. S.; Mohammed, M. N.

Procedia Engineering. Vol. 68 Elsevier Ltd, 2013. p. 186-192.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Alhawari, KS, Omar, MZ, Ghazali, MJ, Salleh, MS & Mohammed, MN 2013, Wear Properties of A356/Al 2O 3 metal matrix composites produced by semisolid processing in Procedia Engineering. vol. 68, Elsevier Ltd, pp. 186-192, 2013 1st Malaysian International Tribology Conference, MITC 2013, Kota Kinabalu, Sabah, Malaysia, 18/11/13. https://doi.org/10.1016/j.proeng.2013.12.166
Alhawari, K. S. ; Omar, Mohd. Zaidi ; Ghazali, Mariyam Jameelah ; Salleh, M. S. ; Mohammed, M. N. / Wear Properties of A356/Al 2O 3 metal matrix composites produced by semisolid processing Procedia Engineering. Vol. 68 Elsevier Ltd, 2013. pp. 186-192
@inproceedings{1cc77532b1cb49999f1c0e68153c35f6,
title = "Wear Properties of A356/Al 2O 3 metal matrix composites produced by semisolid processing",
abstract = "In this study, A356/Al 2O 3 metal matrix composites were fabricated by conventional stirring and semisolid processing (combination of mechanical stirring in the mushy zone and cooling slope casting) and these composites were subjected to wear tests. The composites containing various weight fractions of Al 2O 3 particles (1{\%}, 2.5{\%} and 5{\%}) were used in both conventional and rheocasting processes. In conventional stirring, the primary phase remained dendritic while in rheocasting the dendritic primary phase transformed into a globular microstructure. The influences of these processes on the hardness and wear behaviour of the composites were investigated. A pin-on-disc tribometer was used to carry out tribological tests under dry sliding conditions in air. Wear tests were carried out at 1.0 m/s sliding speed under a 20N load and four different sliding distances. A scanning electron microscope was used to examine the wear mechanism on the worn surfaces of the composites. The results showed that the volume loss of the composites produced by semisolid processing was lower than that of those produced by conventional casting. Based on wear rate ranges, all metal matrix composites exhibited moderate wear regimes. The dominant wear mechanism for all materials was ploughing, with some delimitation.",
keywords = "Conventional stirring, Cooling slope casting, Tribological properties",
author = "Alhawari, {K. S.} and Omar, {Mohd. Zaidi} and Ghazali, {Mariyam Jameelah} and Salleh, {M. S.} and Mohammed, {M. N.}",
year = "2013",
doi = "10.1016/j.proeng.2013.12.166",
language = "English",
volume = "68",
pages = "186--192",
booktitle = "Procedia Engineering",
publisher = "Elsevier Ltd",

}

TY - GEN

T1 - Wear Properties of A356/Al 2O 3 metal matrix composites produced by semisolid processing

AU - Alhawari, K. S.

AU - Omar, Mohd. Zaidi

AU - Ghazali, Mariyam Jameelah

AU - Salleh, M. S.

AU - Mohammed, M. N.

PY - 2013

Y1 - 2013

N2 - In this study, A356/Al 2O 3 metal matrix composites were fabricated by conventional stirring and semisolid processing (combination of mechanical stirring in the mushy zone and cooling slope casting) and these composites were subjected to wear tests. The composites containing various weight fractions of Al 2O 3 particles (1%, 2.5% and 5%) were used in both conventional and rheocasting processes. In conventional stirring, the primary phase remained dendritic while in rheocasting the dendritic primary phase transformed into a globular microstructure. The influences of these processes on the hardness and wear behaviour of the composites were investigated. A pin-on-disc tribometer was used to carry out tribological tests under dry sliding conditions in air. Wear tests were carried out at 1.0 m/s sliding speed under a 20N load and four different sliding distances. A scanning electron microscope was used to examine the wear mechanism on the worn surfaces of the composites. The results showed that the volume loss of the composites produced by semisolid processing was lower than that of those produced by conventional casting. Based on wear rate ranges, all metal matrix composites exhibited moderate wear regimes. The dominant wear mechanism for all materials was ploughing, with some delimitation.

AB - In this study, A356/Al 2O 3 metal matrix composites were fabricated by conventional stirring and semisolid processing (combination of mechanical stirring in the mushy zone and cooling slope casting) and these composites were subjected to wear tests. The composites containing various weight fractions of Al 2O 3 particles (1%, 2.5% and 5%) were used in both conventional and rheocasting processes. In conventional stirring, the primary phase remained dendritic while in rheocasting the dendritic primary phase transformed into a globular microstructure. The influences of these processes on the hardness and wear behaviour of the composites were investigated. A pin-on-disc tribometer was used to carry out tribological tests under dry sliding conditions in air. Wear tests were carried out at 1.0 m/s sliding speed under a 20N load and four different sliding distances. A scanning electron microscope was used to examine the wear mechanism on the worn surfaces of the composites. The results showed that the volume loss of the composites produced by semisolid processing was lower than that of those produced by conventional casting. Based on wear rate ranges, all metal matrix composites exhibited moderate wear regimes. The dominant wear mechanism for all materials was ploughing, with some delimitation.

KW - Conventional stirring

KW - Cooling slope casting

KW - Tribological properties

UR - http://www.scopus.com/inward/record.url?scp=84899551549&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84899551549&partnerID=8YFLogxK

U2 - 10.1016/j.proeng.2013.12.166

DO - 10.1016/j.proeng.2013.12.166

M3 - Conference contribution

VL - 68

SP - 186

EP - 192

BT - Procedia Engineering

PB - Elsevier Ltd

ER -