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Materials (Basel). 2017 May 20;10(5). pii: E560. doi: 10.3390/ma10050560.

Influence of Low-Frequency Vibration and Modification on Solidification and Mechanical Properties of Al-Si Casting Alloy.

Author information

1
Electrometallurgical Faculty, The National Metallurgical Academy of Ukraine, 4 Gagarina Ave., Dnipro 49600, Ukraine. s-v-y@mail.ru.
2
Electrometallurgical Faculty, The National Metallurgical Academy of Ukraine, 4 Gagarina Ave., Dnipro 49600, Ukraine. yuri.dotsenko1@gmail.com.
3
Zimin Advanced Materials Laboratory, Department of Chemical Engineering, Biotechnology and Materials, Ariel University, Ariel 40700, Israel. konstantinb@ariel.ac.il.

Abstract

One of the major aims of the modern materials foundry industry is the achievement of advanced mechanical properties of metals, especially of light non-ferrous alloys such as aluminum. Usually an alloying process is applied to obtain the required properties of aluminum alloys. However, the presented work describes an alternative approach through the application of vibration treatment, modification by ultrafine powder and a combination of these two methods. Microstructural studies followed by image analysis revealed the refinement of α-Al grains with an increase in the Si network area around them. As evidence, the improvement of the mechanical properties of Al casting alloy was detected. It was found that the alloys subjected to the vibration treatment displayed an increase in tensile and yield strengths by 20% and 10%, respectively.

KEYWORDS:

aluminum casting alloy; mechanical properties; modification; permanent mold; vibration treatment

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