An Investigation on the Effect of Chill Modification on Microstructure and Quality Index of Al-15Mg2Si Composite

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Safary Elaheh; TAGHIABADI REZA

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Journal: FOUNDING RESEARCH JOURNAL Year:2020 | Volume:4 | Issue:2 Page(s): 79-87

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Information Journal Paper

Title

An Investigation on the Effect of Chill Modification on Microstructure and Quality Index of Al-15Mg2Si Composite

Author(s)

Safary Elaheh | TAGHIABADI REZA | Issue Writer Certificate

Keywords

Composite

Al-Mg2Si

Chill modification

Tensile properties

Quality index

Abstract

Cast Al-15Mg2Si Composites due to appropriate specific strength and tribological properties are widely used in automotive and aerospace industries. The improved properties of these Composites are governed by the correct controlling of morphology, size, and distribution of primary Mg2Si particles. In this study the effect of solidification cooling rate (chill modification) was investigated on structure and Quality index of Al-15Mg2Si Composite. The casting operation was performed in different molds with varying cooling rates of 2. 7, 5. 5, 17. 1, and 57. 5 ° C/s. According to the microstructural observation and image analysis results, increasing the solidification rate resulted in refinement of primary Mg2Si particles and improvement of their distribution in the matrix. The increased solidification cooling rate, moreover, refined the grains so that increasing cooling rate from 2. 7 to 57. 5 ° C/s resulted in 93% reduction in grain size. These microstructural variations improved the Composite tensile strength, fracture strain, and Quality index. The Quality index of Composite solidified at 2. 7 ° C/s was found to be lower than that of Composite solidified at cooling rate of 57. 5 ° C/s by 240%.

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APA: Copy

Safary, Elaheh, & TAGHIABADI, REZA. (2020). An Investigation on the Effect of Chill Modification on Microstructure and Quality Index of Al-15Mg2Si Composite. FOUNDING RESEARCH JOURNAL, 4(2 ), 79-87. SID. https://sid.ir/paper/380127/en

Vancouver: Copy

Safary Elaheh, TAGHIABADI REZA. An Investigation on the Effect of Chill Modification on Microstructure and Quality Index of Al-15Mg2Si Composite. FOUNDING RESEARCH JOURNAL[Internet]. 2020;4(2 ):79-87. Available from: https://sid.ir/paper/380127/en

IEEE: Copy

Elaheh Safary, and REZA TAGHIABADI, “An Investigation on the Effect of Chill Modification on Microstructure and Quality Index of Al-15Mg2Si Composite,” FOUNDING RESEARCH JOURNAL, vol. 4, no. 2 , pp. 79–87, 2020, [Online]. Available: https://sid.ir/paper/380127/en

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