Corrosion Improvement and Microstructure Evaluation of SEM-Solid A356 Alloy by Ecap Process

M. A. Gebril, Mohd. Zaidi Omar, I. F. Mohamed, Norinsan Kamil Othman, M. A.H. Abdelgnei

Research output: Contribution to journalConference article

1 Citation (Scopus)

Abstract

Al-Si is a casting alloy developed mostly for automobile and aircraft engine industries. This research presents a study related to the semi solid casting of Al-Si A356 alloy produced by cooling slope known as thixoforming process. The sample has then undergone T6 heat treatment. The grain refinement was achieved suitable for thixoforming by Severe Plastic Deformation (SPD) technique through Equal-Channel Angular Pressing (ECAP). The ECAP was conducted at room temperature in which a 10 mm rod was pressed through a constrained channel of a die that was bent abruptly close to 120°. The coarse α-Al phase and silicon particles changes into a globular shape after thixoforming process and T6 heat treatment. The ECAP processing through route A leads to particle refinement after one pass and further refined with an average particle size of 41.2μm after two pass pressing. The potentiodynamic test showed that the corrosion rate reduced to 0.0024 mmpy after two passes of ECAP processing. It confirms that particle refinement through ECAP processing leads to significant enhancement of corrosion resistance in A356 alloy.

Original languageEnglish
Article number012110
JournalJournal of Physics: Conference Series
Volume1082
Issue number1
DOIs
Publication statusPublished - 10 Oct 2018
EventRegional Conference on Materials and ASEAN Microscopy Conference 2017, RCM and AMC 2017 - Penang, Malaysia
Duration: 12 Dec 201713 Dec 2017

Fingerprint

pressing
corrosion
microstructure
scanning electron microscopy
evaluation
heat treatment
automobile engines
process heat
aircraft engines
corrosion resistance
plastic deformation
rods
industries
routes
slopes
cooling
augmentation
silicon
room temperature

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Corrosion Improvement and Microstructure Evaluation of SEM-Solid A356 Alloy by Ecap Process. / Gebril, M. A.; Omar, Mohd. Zaidi; Mohamed, I. F.; Othman, Norinsan Kamil; Abdelgnei, M. A.H.

In: Journal of Physics: Conference Series, Vol. 1082, No. 1, 012110, 10.10.2018.

Research output: Contribution to journalConference article

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