Microstructure evolution and mechanical properties of rheocast A319 aluminum alloy using cooling slope

M. S. Salleh, Mohd. Zaidi Omar, J. Syarif, M. N. Mohammed, K. S. Alhawari

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

1 Citation (Scopus)

Abstract

A319 aluminum alloys are commonly used in automotive industry due to a combination of good fluidity and mechanical strength. In this present work, cooling slope (CS) rheocasting process was employed to produce A319 billets with near spherical morphology of primary Al phase. The dendritic primary phase in the cast A319 alloy had readily transformed into nondendritic when the ingots were cast over a cooling plate from pouring temperatures between 620°C and 640°C and with cooling lengths of between 300 mm and 400 mm. The shear driven flow of the solidifying melt on the cooling slope wall promotes heterogeneous nucleation of α-Al phase and subsequent separation from there due to shear driven flow of the solidifying melt produced nearly spheroidal morphology of the primary phase in the microstructure. The results show that the best combination of pouring temperature and cooling length was found to be 630°C and 400 mm respectively. The hardness of the rheocast ingots improved to 85.3 HV from 81.8 HV in as-cast condition.

Original languageEnglish
Title of host publicationApplied Mechanics and Materials
PublisherTrans Tech Publications Ltd
Pages261-265
Number of pages5
Volume663
ISBN (Print)9783038352617
DOIs
Publication statusPublished - 2014
Event2nd International Conference on Recent Advances in Automotive Engineering and Mobility Research, ReCAR 2013 - Kuala Lumpur
Duration: 16 Dec 201318 Dec 2013

Publication series

NameApplied Mechanics and Materials
Volume663
ISSN (Print)16609336
ISSN (Electronic)16627482

Other

Other2nd International Conference on Recent Advances in Automotive Engineering and Mobility Research, ReCAR 2013
CityKuala Lumpur
Period16/12/1318/12/13

Fingerprint

Aluminum alloys
Cooling
Mechanical properties
Microstructure
Shear flow
Ingots
Rheocasting
Fluidity
Automotive industry
Strength of materials
Nucleation
Hardness
Temperature

Keywords

  • A319 aluminum alloy
  • Cooling slope
  • Rheocasting

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Salleh, M. S., Omar, M. Z., Syarif, J., Mohammed, M. N., & Alhawari, K. S. (2014). Microstructure evolution and mechanical properties of rheocast A319 aluminum alloy using cooling slope. In Applied Mechanics and Materials (Vol. 663, pp. 261-265). (Applied Mechanics and Materials; Vol. 663). Trans Tech Publications Ltd. https://doi.org/10.4028/www.scientific.net/AMM.663.261

Microstructure evolution and mechanical properties of rheocast A319 aluminum alloy using cooling slope. / Salleh, M. S.; Omar, Mohd. Zaidi; Syarif, J.; Mohammed, M. N.; Alhawari, K. S.

Applied Mechanics and Materials. Vol. 663 Trans Tech Publications Ltd, 2014. p. 261-265 (Applied Mechanics and Materials; Vol. 663).

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

Salleh, MS, Omar, MZ, Syarif, J, Mohammed, MN & Alhawari, KS 2014, Microstructure evolution and mechanical properties of rheocast A319 aluminum alloy using cooling slope. in Applied Mechanics and Materials. vol. 663, Applied Mechanics and Materials, vol. 663, Trans Tech Publications Ltd, pp. 261-265, 2nd International Conference on Recent Advances in Automotive Engineering and Mobility Research, ReCAR 2013, Kuala Lumpur, 16/12/13. https://doi.org/10.4028/www.scientific.net/AMM.663.261
Salleh MS, Omar MZ, Syarif J, Mohammed MN, Alhawari KS. Microstructure evolution and mechanical properties of rheocast A319 aluminum alloy using cooling slope. In Applied Mechanics and Materials. Vol. 663. Trans Tech Publications Ltd. 2014. p. 261-265. (Applied Mechanics and Materials). https://doi.org/10.4028/www.scientific.net/AMM.663.261
Salleh, M. S. ; Omar, Mohd. Zaidi ; Syarif, J. ; Mohammed, M. N. ; Alhawari, K. S. / Microstructure evolution and mechanical properties of rheocast A319 aluminum alloy using cooling slope. Applied Mechanics and Materials. Vol. 663 Trans Tech Publications Ltd, 2014. pp. 261-265 (Applied Mechanics and Materials).
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