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  2. Volume 8, Issue 1
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ISSN: 1999-8716

Volume8, Issue1

STUDY THE MECHANICAL PROPERITIES OF ALLOY (Al-22%Si) FUNCTIONALLY GRADIENT PRODUCED BY THE VERTICAL CENTRIFUGAL CASTING

    Hussein Ali Hussein

DIYALA JOURNAL OF ENGINEERING SCIENCES, 2015, Volume 8, Issue 1, Pages 13-28

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Abstract

This research is devoted to prepare a functionally graded material (FGM) by using vertical centrifugal casting method and to study the effect of the rotational speed of casting mold on the microstructure and hardness of a hypereutectic (Al-22%Si) alloy. Therefore, the melt was overheated to (850) Cº and poured in the centrifugal casting mold after preheating to (115) Cº. Then casting was carried out at different rotational speed (625, 1027, 1144, and 1907) r.p.m. The results showed, increasing mold rotational speed due to increasing the average volume fraction in the inner layer from cylinder thickness and decreased in the intermediate and outer layer also decreased the grain size of primary silicon. The results of wear tests showed that the maximum wear resistant was found in the inner layer from cylinder thickness at a rotational speed of (1907) r.p.m, and then the outer layer but minimum wear resistant was in the intermediate layer. The results of hardness tests showed that the maximum hardness was found in the inner layer from cylinder thickness, and increased with increasing mold rotation speed and then outer layer and intermediate layer.
Keywords:
    functionally graded material vertical centrifugal casting Rotational Speed Alloy
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(2015). STUDY THE MECHANICAL PROPERITIES OF ALLOY (Al-22%Si) FUNCTIONALLY GRADIENT PRODUCED BY THE VERTICAL CENTRIFUGAL CASTING. DIYALA JOURNAL OF ENGINEERING SCIENCES, 8(1), 13-28.
Hussein Ali Hussein. "STUDY THE MECHANICAL PROPERITIES OF ALLOY (Al-22%Si) FUNCTIONALLY GRADIENT PRODUCED BY THE VERTICAL CENTRIFUGAL CASTING". DIYALA JOURNAL OF ENGINEERING SCIENCES, 8, 1, 2015, 13-28.
(2015). 'STUDY THE MECHANICAL PROPERITIES OF ALLOY (Al-22%Si) FUNCTIONALLY GRADIENT PRODUCED BY THE VERTICAL CENTRIFUGAL CASTING', DIYALA JOURNAL OF ENGINEERING SCIENCES, 8(1), pp. 13-28.
STUDY THE MECHANICAL PROPERITIES OF ALLOY (Al-22%Si) FUNCTIONALLY GRADIENT PRODUCED BY THE VERTICAL CENTRIFUGAL CASTING. DIYALA JOURNAL OF ENGINEERING SCIENCES, 2015; 8(1): 13-28.
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Journal Information

Publisher: Diyala University

Email:  engineering_college@diyengineering.net

Editor-in-chief: Dr. Amer Mohammed Ibrahim

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