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Paper Information

Journal:   JOURNAL OF SCIENCE AND TECHNOLOGY OF COMPOSITES (JSTC)   winter 2019 , Volume 5 , Number 4 ; Page(s) 461 To 468.
 
Paper: 

Investigation of the microstructure and hardness of cast AA7068 nanocomposite reinforced with SiC nanoparticles

 
 
Author(s):  Alipour Mohammad, Eslami Farsani Reza*
 
* Faculty of Materials Science and Engineering, K.N. Toosi University of Technology, Tehran, Iran
 
Abstract: 
In this study, microstructure and mechanical properties of AA7068 nanocomposite reinforced with 1, 2, 3 and 5 wt. % SiC nanoparticles (SiCnp) produced by stir casting and ultrasonic treatment have been investigated. Ultrasound device equipped with a cooling system with 2000 W powers was used for mixing alloy and nanoparticles. Also scanning electron microscopy was used for microstructure studies. The microstructure of nanocomposite was investigated by scanning electron microscope. The microstructural studies of the nanocomposite revealed that SiCnp addition reduces the grain size, but adding higher SiCnp content (5 wt. %) does not change the grain size considerably. Further investigations on hardness revealed that the addition of SiCnp increases hardness. At higher SiCnp contents (5 wt. %), the presence of SiCnp agglomerate on grain boundaries was found that causes decrease the hardness. The optimum amount of nanoparticles is 3 wt. % SiCnp that nanocomposite exhibits hardness of 155 BHN. According to the results of hardness for the initial samples and nanocomposites reinforced with 3 wt. % SiC, 24% increase in hardness can be seen.
 
Keyword(s): Casting nanocomposite,SiC nanoparticles,Stir casting,Ultrasonic treatment
 
 
References: 
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Cite:
APA: Copy

ALIPOUR, M., & ESLAMI FARSANI, R. (2019). Investigation of the microstructure and hardness of cast AA7068 nanocomposite reinforced with SiC nanoparticles. JOURNAL OF SCIENCE AND TECHNOLOGY OF COMPOSITES (JSTC), 5(4 ), 461-468. https://www.sid.ir/en/journal/ViewPaper.aspx?id=655475



Vancouver: Copy

ALIPOUR MOHAMMAD, ESLAMI FARSANI REZA. Investigation of the microstructure and hardness of cast AA7068 nanocomposite reinforced with SiC nanoparticles. JOURNAL OF SCIENCE AND TECHNOLOGY OF COMPOSITES (JSTC). 2019 [cited 2021April21];5(4 ):461-468. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=655475



IEEE: Copy

ALIPOUR, M., ESLAMI FARSANI, R., 2019. Investigation of the microstructure and hardness of cast AA7068 nanocomposite reinforced with SiC nanoparticles. JOURNAL OF SCIENCE AND TECHNOLOGY OF COMPOSITES (JSTC), [online] 5(4 ), pp.461-468. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=655475.



 
 
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