Sıcak Pres ile Üretilmiş Al-Nano SiC Kompozitin Mekanik Özelliklerinin İncelenmesi

Year 2019, Volume: 23 Issue: 2, 597 - 600, 25.08.2019

Rıdvan Yamanoğlu , Erdinç Efendi

https://doi.org/10.19113/sdufenbed.528106

Abstract

Bu
çalışmada saf alüminyum (Al) matris içerisine ağırlıkça % 0.25, 0.5 ve 1
oranlarında nano silisyum karbür partikülleri ilave edilmiş ve ardından toz
karışımları önce mekanik alaşımlama, daha sonra sıcak pres ile sinterleme
işlemine tabi tutulmuştur. Sinterleme sonrasında elde edilen numuneler
metalografik işlemler ile hazırlanıp aşınma ve eğilme testlerine tabi
tutulmuştur. Aşınma testleri sonucunda, saf Al matrise artan miktarda
nanopartikül ilavesinin, belli orana kadar aşınma direncini arttırdığı
gözlenmiştir. Benzer şekilde, artan nanopartikül takviyesiyle, eğilme testi
sonuçlarında da gözle görülür artışın olduğu gözlenmiştir. Takviye
partiküllerinin yapı içerisindeki dağılımını incelemek amacıyla numunelere EDX
analizi ile elementel dağılım analizi yapılmıştır. Elde edilen sonuçlar
literatür ile karşılaştırılarak değerlendirilmiştir.

Keywords

NanoSiC, Kompozit, Sıcak pres, Sinterleme

Investigation of Mechanical Properties of Al-Nano SiC Composite Produced by Hot Pressing

Abstract

In
this study, nano SiC particles with different ratios of 0.25, 0.5 and 1 wt%
were added to the pure Al, and then the powder mixtures were subjected to
mechanical alloying and sintering by hot press. After sintering process,
samples were metallographically prepared for wear and bending tests. The
results showed that the addition of a certain amount of nano SiC particles
increased the wear resistance of pure Al matrix. The similar results were
obtained after bending test results. In order to study the distribution of
reinforcement particles in the structure, elemental distribution analysis was
performed with EDX analysis. The results were evaluated in detail.

Keywords

Nano SiC, Composite, Hot pressing, Sintering

References

• [1] Yang, Y., Lan, J., Li, X. 2004. Study on bulk aluminum matrix nano-composite fabricated by ultrasonic dispersion of nano-sized SiC particles in molten aluminum alloy. Materials Scence and Enginerring: A, 380(1), 378-383.
• [2] Yamanoglu, R. 2013. Effect of heat treatment on the tribological properties of Al-Cu-Mg/nanoSiC composites. Materials & Design, 49, 820-825.
• [3] Amouri, K. 2016. Microstructure and mechanical properties of Al-nano/micro SiC composites produced by stir casting technique. Materials Science and Engineering: A, 674, 569-578.
• [4] Li, C. P., Wang, Z. G., Wang, H., Zhu, X. 2016. Fabrication of nano-SiC particulate reinforced Mg-8Al-1Sn composite by powder metallurgy combined with hot extrusion. Journal of Materials Engineering and Performance, 25(11), 5049-5054.
• [5] Yamanoglu, R., Zeren, M., German, R. M. 2012. Solidifaction characteristics of atomized AlCu4Mg1-SiC cımposite powders. Journal of Mining and Metallurgy B: Metallurgy, 48(1), 73-79.
• [6] Nassar, A. E., Nassar, E. E. 2017. Properties of aluminum matrix nano composites prepared by powder metallurgy processing. Hournal of King Saud University-Engineering Sciences, 29(3), 295-299.
• [7] Tavakol, M. Mahnama, M., Naghdabadi, R. 2016. Shock wave sintering of Al/SiC metal matrix nano-composites: A molecular Dynamics study. Computational Materials Science, 125, 255-262.
• [8] Abdullahi, K., Al-Aqeeli, N. 2014. Mechanical alloying and spark plasma sintering of nano-SiC reinforced Al-12Si-0.3Mg alloy. Arabian Journal for Sicence and Engineering, 39(4), 3161-3168.
• [9] Murthy, N. V. 2016. Preparation of SiC based aluminium metal matrix nano composites by high intensity ultrasonic cavitation process and evaluation of mechanical and tribological properties. IOP Conference Series: Materials Science and Engineering, 149(1), 012106.
• [10] Padmavathi, K. R., Ramakrishman, R. 2017. Tribological properties of micro and nano SiC reinforced aluminium metal matrix composites. International Journal of ChemTech Research, 10(6), 367-372.