Investigation on the Simultaneous Effects of Zn Additions and Critical Ingate Velocity on the Hot Tearing Susceptibility of A356 and A206 Aluminum Alloys

Subject Areas : Journal of Environmental Friendly Materials

M. Ghambarian ¹ , S.M.A. Boutorabi ² , F. Shahri ³

1 - Department of Materials and Metallurgy Engineering, Iran University of Industries and Mines (IUIM), Tehran, Iran
2 - Center of Excellence for High Strength Alloys Technology (CEHSAT), School of Metallurgy and Materials Engineering, Iran University of Science and Technology (IUST), Tehran, Iran
3 - Department of Advanced Materials and Renewable Energy, Iranian Research Organization for Science and Technology

Received: 2018-01-28 Accepted : 2018-01-28 Published : 2018-01-01

Keywords:

Abstract :

In this study, the simultaneous effects of Zn addition and critical gate velocity on hot tearing susceptibility of A356 and A206 aluminum alloys were investigated. In order to investigate these two parameters, ingate velocities of 0.5, 0.75, 1, 1.5 m/s were taken into account. After performing the casting process, the samples were investigated by visual examination, and scanning electron microscopy. In order to quantitative evaluation of results, ProCast software were used. The results of the present study showed that increasing the Zn content for alloy A356, had no effect on hot tearing susceptibility of this alloy, while with increasing the Zn content from 0.01 to 2.8 wt%, the number and severity of the tears were increased.

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