Investigation of Mechanical Properties of Composite Al6061/Ni-Al2O3 Produced by Stir Casting Process

Abstract

Composites are widely used material types today, and it is known that matrices and additives in composites improve the mechanical properties of the material. In this study, Al6061 matrix and Ni-Al2O3 reinforced composite material was produced by stir casting method and the effect of Ni- Al2O3 mixture reinforcement on the hardness and tensile properties of the produced composite material was investigated. The determination of the mechanical properties of the samples obtained after the casting process was determined by the results of microhardness analysis and tensile test, and the internal structure of the material was examined by XRD analysis. According to the results of XRD analysis, it was determined that Ni and Al2O3 phases were formed together with the matrix element Al. The results of the tensile analyzes showed that the amount of strain in the composite material changed depending on the ratio of the reinforcement element, and the highest strain value occurred in the Ni-Al2O3 reinforced sample with Al matrix. However, it was observed that the brittle fracture mechanism was effective in all samples. While the highest microhardness value was obtained in sample 4 (Al6061+ (mass. %15) Ni+ Al2O3) with 89.6 HV0.5 value, the lowest microhardness value was obtained from pure Al sample with 66.7 HV0.5 value. As a result, it was determined that the Ni-Al2O3 reinforcement element increased the microhardness value in the Al matrix composite material.

Keywords

• Composite
• Al2O3
• Microhardness
• Al6061

References

1. [1] Şenel M.C. et al., “SiC Takvıyeli Alümınyum Esaslı Kompozıtlerın Mekanik Özelliklerinin ve Mikro Yapısının İncelenmesi,” Technological Applied Sciences (NWSATAS), to be published. DOI:10.12739/NWSA.2018.13.2.2A0142.
2. [2] Öztop B, Gürbüz M, “Atık Alüminyumdan Elde Edilen Matrise Grafen Takviyesiyle Üretilen Kompozitlerin Özelliklerinin İncelenmesi,” International Journal of Multidisciplinary Studies and Innovative Technologies, vol. 1, no 2, pp 4 – 8, 2017.
3. [3] Rangrej S. et al., “Effects of reinforcement additions on properties of aluminium matrix composites – A review,” Materials Today: Proceedings, to be published. DOI: 10.1016/j.matpr.2020.10.604.
4. [4] O'Connor M.J., Wawner F.E., Jones C.C., “An investigation of the microstructure and mechanical properties of the macro-interface in selectively reinforced aluminium castings,” Journal of Materials Science, vol. 31, pp. 164-171, 1996.
5. [5] Shunmugasundaram M., Kumar A.P., Sankar L.P., Sivasankar S., “Experimental investigation and process parameters optimization of stir cast aluminium metal matrix composites to improve material removal rate,” Materials Today: Proceedings, vol. 27, pp. 883–888, 2020.
6. [6] Rao E.S., Ramanaiah N., “Influence of Heat Treatment on Mechanical and Corrosion Properties of Aluminium Metal Matrix composites (AA 6061 reinforced with MoS2),” Materials Today: Proceedings, vol. 4, pp. 11270–11278, 2017.
7. [7] Schneider Y., Soppa E., Kohler C., Mokso R., Roos E., “Numerical and experimental investigations of the global and local behaviour of an Al(6061)/Al2O3 metal matrix composite under low cycle fatigue,” Procedia Engineering, vol. 10, pp. 1515–1520, 2011.
8. [8] Karakoç H., Çıtak R., “B4C Takviyelendirilmiş Aluminyum Kompozit Malzemelerin TIG Kaynağı İle Kaynaklanabilirliğinin İncelenmesi,” El-Cezerî Fen ve Mühendislik Dergisi, vol. 4, no. 3, pp. 584-592, 2017.

9. [9] Senthil S. et al., “Manufacturing processes & recent applications of aluminium metal matrix composite materials: A review,” DOI: 10.1016/j.matpr.2020.08.792.
10. [10] Gökçe A., Fındık F., Kurt A.O., “Alüminyum ve Alaşımlarının Toz Metalurjisi İşlemleri,” Mühendis ve Makine, vol. 58, no. 686, pp. 21-47, 2017.
11. [11] Venkata S. et al., “Investigation of SiC and AL2O3 – Reinforced with aluminium composites- A review,” DOI: 10.1016/j.matpr.2020.10.276.
12. [12] Prajulraj P. et al., “Experimental investigation on mechanical and morphological properties of AA 6061 reinforced with silicon carbide,” DOI: 10.1016/j.matpr.2020.07.501.
13. [13] Ramesh C.S., Keshavamurthy R., Channabasappa B.H., “Abrar Ahmed, Microstructure and mechanical properties of Ni–P coated Si3N4 reinforced Al6061 composites,” Materials Science and Engineering A, vol. 502, pp. 99–106, 2009.
14. [14] Su H., Gao W., Feng Z., Lu Z., “Processing, microstructure and tensile properties of nano-sized Al2O3 particle reinforced aluminum matrix composites,” Materials and Design, vol. 36, pp. 590–596, 2012.
15. [15] Okumuş M., Bülbül B,. “Investigation of Thermal and Microstructural Properties of Al-4.5Cu/SiC Composite Produced by Mechanical Alloying Method,” GU J Sci, Part C, vol. 8, no. 2, pp. 405-417, 2020.
16. [16] Panwar N., Chauhan A., “Fabrication methods of particulate reinforced Aluminium metal matrix composite-A review,” Materials Today: Proceedings, vol. 5, pp. 5933–5939, 2018.
17. [17] Bayar H., Subaşı M., Karataş Ç., “SiC Takviyeli Alüminyum Alaşım Matrisli Kompozit Malzemenin Yüksek Basınçlı Kalıp Dökümü ve Mekanik Özellikleri,” Gazi University Journal of Science GU J Sci Part C, vol. 3, no. 4, pp. 603-612, 2015.
18. [18] Kalaiselvan K., Murugan N., Parameswaran S., “Production and characterization of AA6061–B4C stir cast compo,” Materials and Design, vol. 32, pp. 4004–4009, 2011.
19. [19] Shang F., Cao Z., Zhang P., Qiao B., Li H., “Microstructure and Properties of Ni/ Al2O3 Composites Prepared by Powder Injection Molding,” IOP Conf. Series: Materials Science and Engineering, vol. 389, pp. 012-022, 2018.
20. [20] Sajjadi S.A., Ezatpour H.R., Beygi H., “Microstructure and mechanical properties of Al– Al2O3 micro and nano composites fabricated by stir casting,” Materials Science and Engineering A, vol. 528, pp. 8765– 8771, 2011.
21. [21] Yang G., Song W., Lu J, Hao Y, Li Y, Ma Y,. “Microstructure of surface composite Al2O3/Ni on copper substrate produced by vacuum infiltration casting,” Materials Science and Engineering A, vol. 418, pp. 223–228, 2006.
22. [22] Raghavendra C. R., Basavarajappa S., Sogalad I, “Influence of Pin Temperature on Dry Sliding Wear Behaviour of Ni– Al2O3 Composite Coating on Al6061 Substrate,” J. Inst. Eng. India Ser. C, vol. 101, no. 4, pp. 671–681, 2020.
23. [23] Cooke K O, Khan T I, Oliver G D,. “Effect of Ni– Al2O3 nanocomposite coating thickness on transient liquid phase bonding of Al 6061 MMC,” Science and Technology of Welding and Joining, vol. 17, no. 1, pp. 22-31, 2012.
24. [24] Karabulut H., Çıtak R., Çinici H., “Mekanik Alaşımlama Süresinin Al + % 10 Al2O3 Kompozitlerde Eğme Dayanımına Etkisi,” Gazi Üniv. Müh. Mim. Fak. Der., vol. 28, no. 3, pp.635-643, 2013.
25. [25] Sivananthan S., Reddy V.R., Samuel C.S.J., “Preparation and evaluation of mechanical properties of 6061Al- Al2O3 metal matrix composites by stir casting process,” Materials Today: Proceedings, vol. 21, pp. 713–716, 2020.
26. [26] Baradeswaran A., Perumal A.E., “Study on mechanical and wear properties of Al 7075/ Al2O3/graphite hybrid composites,” Composites: Part B, vol. 56, pp. 464–471, 2014. [27] Pathak J.P., Singh J.K., Mohan S., “Synthesis and characterisation of aluminium– silicon–silicon carbide composites,” Indian J Eng Mater., vol. 13, pp. 238–46, 2006.
27. [28] Sak N., Zeren M., Yamanoğlu R., Alümina Katkılı ve Nikel ile Alaşımlandırılmış Alüminyum Esaslı Kompozitlerde Özelliklerin Karakterizasyonu,” Koc. Üni. Fen Bil. Der., vol. 1, no. 1, pp. 1˗7, 2018.
28. [29] Çelik Y.H., Seçilmis K., “Investigation of wear behaviours of Al matrix composites reinforced with different B4C rate produced by powder metallurgy method,” Advanced Powder Technology, vol. 28, no. 9, pp. 2218-2224, 2017.
29. [30] Kilic M., “Microstructural Characterization of Ni-Based B4C Reinforced Composite Coating Produced by Tungsten Inert Gas Method,” Arch. Metall. Mater. Vol. 66, no. 3, pp. 917-924, DOI: 10.24425/amm.2021.136398.