EVALUATION OF THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AL-SIC NANOCOMPOSITE FABRICATED BY STIR CASTING

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AMOURI KAMAL; KAZEMI SHAHAB; KAZAZI MAHDI

مرکز اطلاعات علمی Scientific Information Database (SID) - Trusted Source for Research and Academic Resources

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Journal: Modares Mechanical Engineering Year:2016 | Volume:16 | Issue:1 Page(s): 21-28

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Title

EVALUATION OF THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AL-SIC NANOCOMPOSITE FABRICATED BY STIR CASTING

Author(s)

AMOURI KAMAL | KAZEMI SHAHAB | KAZAZI MAHDI | Issue Writer Certificate

Keywords

NANOCOMPOSITEQ2

STIR CASTINGQ2

T6 HEAT TREATMENTQ1

MICROSTRUCTURE AND MECHANICAL PROPERTIESQ1

Abstract

In this study, particulate NANOCOMPOSITEs with A356 aluminum alloy as a matrix reinforced with 1 and 1.5 wt.% SiC nanoparticles with 50 nm average grain size were fabricated by STIR CASTING method and then the obtained composites were subjected to T6 HEAT TREATMENT. The mechanical properties such as Hardness Test and Tensile Test of composites samples were investigated. Microstructures of the samples were also investigated by using optical microscope (OM) and scanning electron microscope (SEM). The results show that T6 heat treated NANOCOMPOSITEs have significantly higher hardness and tensile strength compared to the NANOCOMPOSITEs without heat treatment. The enhancement in the mechanical properties is due to the formation of Mg2Si phase and globular silicon particles. Also, increasing of concentration of SiC nanoparticles led to improvement in hardness and tensile strength, so that the highest tensile strength and hardness was obtained for the 1.5 wt.% SiC NANOCOMPOSITE. Tensile strength and hardness of 1.5 wt% SiC NANOCOMPOSITEs before and after T6 HEAT TREATMENT achieved 177 MPa and 236 MPa and 80 HBN and 123 HBN, respectively. Fracture surfaces studied using SEM show that failure of all samples is brittle fracture.

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APA: Copy

AMOURI, KAMAL, KAZEMI, SHAHAB, & KAZAZI, MAHDI. (2016). EVALUATION OF THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AL-SIC NANOCOMPOSITE FABRICATED BY STIR CASTING. MODARES MECHANICAL ENGINEERING, 16(1), 21-28. SID. https://sid.ir/paper/178427/en

Vancouver: Copy

AMOURI KAMAL, KAZEMI SHAHAB, KAZAZI MAHDI. EVALUATION OF THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AL-SIC NANOCOMPOSITE FABRICATED BY STIR CASTING. MODARES MECHANICAL ENGINEERING[Internet]. 2016;16(1):21-28. Available from: https://sid.ir/paper/178427/en

IEEE: Copy

KAMAL AMOURI, SHAHAB KAZEMI, and MAHDI KAZAZI, “EVALUATION OF THE MICROSTRUCTURE AND MECHANICAL PROPERTIES OF AL-SIC NANOCOMPOSITE FABRICATED BY STIR CASTING,” MODARES MECHANICAL ENGINEERING, vol. 16, no. 1, pp. 21–28, 2016, [Online]. Available: https://sid.ir/paper/178427/en

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