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Original Research
Online Published: 23 Nov 2020
 


EFFECTS OF MOULD VIBRATION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A HYPEREUTECTIC AL-SI ALLOY

M. A. Adamu, D. S. Yawas, T. Ause, U. Hassan.


Abstract
The effect of mechanical vibration during the solidification of hypereutectic Al-Si (Al-20% wt Si) alloy on the microstructure and mechanical properties was investigated. The specimen with a specification of 25 mm in diameter and 65 mm long were solidified in the frequency range of 0 to 6.3 Hz so as to examine the effect of the vibration on the grain structure, tensile strength, hardness value and impact energy. In comparison with the grains formed in the as-cast state without vibration, the morphology of the grains changes from predominantly dendritic to a more globular structure as the intensity of vibration increases. The test result shows that there is an improvement in the mechanical properties of the samples within the frequency threshold of 1.5 and 4.2 Hz.

Key words: Mould, vibration, aluminum-silicon


 
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Pubmed Style

Adamu MA, Yawas DS, Ause T, Hassan U. EFFECTS OF MOULD VIBRATION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A HYPEREUTECTIC AL-SI ALLOY. NJE. 2020; 27(1): 59-67.

Web Style

Adamu MA, Yawas DS, Ause T, Hassan U. EFFECTS OF MOULD VIBRATION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A HYPEREUTECTIC AL-SI ALLOY. https://www.njeabu.com.ng/?mno=9607 [Access: June 22, 2026].

AMA (American Medical Association) Style

Adamu MA, Yawas DS, Ause T, Hassan U. EFFECTS OF MOULD VIBRATION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A HYPEREUTECTIC AL-SI ALLOY. NJE. 2020; 27(1): 59-67.


Vancouver/ICMJE Style

Adamu MA, Yawas DS, Ause T, Hassan U. EFFECTS OF MOULD VIBRATION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A HYPEREUTECTIC AL-SI ALLOY. NJE. (2020), [cited June 22, 2026]; 27(1): 59-67.


Harvard Style

Adamu, M. A., Yawas, . D. S., Ause, . T. & Hassan, . U. (2020) EFFECTS OF MOULD VIBRATION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A HYPEREUTECTIC AL-SI ALLOY. NJE, 27 (1), 59-67.


Turabian Style

Adamu, M. A., D. S. Yawas, T. Ause, and U. Hassan. 2020. EFFECTS OF MOULD VIBRATION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A HYPEREUTECTIC AL-SI ALLOY. Nigerian Journal of Engineering, 27 (1), 59-67.


Chicago Style

Adamu, M. A., D. S. Yawas, T. Ause, and U. Hassan. "EFFECTS OF MOULD VIBRATION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A HYPEREUTECTIC AL-SI ALLOY." Nigerian Journal of Engineering 27 (2020), 59-67.


MLA (The Modern Language Association) Style

Adamu, M. A., D. S. Yawas, T. Ause, and U. Hassan. "EFFECTS OF MOULD VIBRATION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A HYPEREUTECTIC AL-SI ALLOY." Nigerian Journal of Engineering 27.1 (2020), 59-67. Print.


APA (American Psychological Association) Style

Adamu, M. A., Yawas, . D. S., Ause, . T. & Hassan, . U. (2020) EFFECTS OF MOULD VIBRATION ON THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF A HYPEREUTECTIC AL-SI ALLOY. Nigerian Journal of Engineering, 27 (1), 59-67.


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