Investigation of microstructure and hardness properties of aged AA 7075 matrix B4C/SiC reinforced composite-hybrid materials

Yıl 2020, Cilt: 5 Sayı: 2, 73 - 82, 29.06.2020

Hakan Gökmeşe Ufuk Taşcı Bülent Bostan

https://doi.org/10.30728/boron.665080

Cited By: 2

Öz

Aluminum hybrid composites are next-generation metal matrix composites having the potential for advanced and new engineering applications. Therefore, in the study, using the powder metallurgy method, microstructure and hardness properties of aluminum (AA7075) composite and hybrid materials were examined in the combination of different ceramic reinforcement phases (5-10-15% B₄C and SiC). Pressed (700MPa) matrix/reinforcement powder mixtures were sintered for 1 hour at a temperature of 560 °C. After the sintering process, density measurements of the test samples were carried out. In order to determine the microstructure and hardness properties of the test samples, optical microscope, scanning electron microscope (SEM), and micro-hardness (HV0.1) measurements were made respectively. At the same time, micro-hardness values were examined by applying the solution-quenching to the test samples at 475 °C temperature for 2 hours and the aging heat treatment at 120 °C temperature for 24 hours. Compared to single ceramic phase composite materials, a decrease in density and hardness value occurred in 5% B₄C-SiC reinforced aluminum hybrid composite materials. Furthermore, it was determined that the micro-hardness values of test samples increased after the aging heat treatment.

Anahtar Kelimeler

Composites, AA7075, Powder Metallurgy, Microstructure, Hardness

Kaynakça

• [1] Bakes H., Benjamin D., Kirkpatrick C.W. (Eds.), Metals Handbook, vol. 2, ASM, Metals Park, OH, pp. 3–23, 1979.
• [2] Shafiei-Zarghani A., Kashani-Bozorg S. F., Zarei-Hanzaki A., Microstructures and mechanical properties of Al/Al2O3 surface nano-composite layer produced by friction stir processing, Mater. Sci. Eng., A, 500 (1), 84-91, 2009.
• [3] Mishra, Rajiv S., Ma Z. Y., Friction stir welding and processing, Mater. Sci. Eng., R: Reports 50 (1), 1-78, 2005.
• [4] Ramakoteswara R. V., Ramanaiah N.,. Sarcar M. M. M., Tribological properties of aluminium metal matrix composites (AA7075 reinforced with titanium carbide (TiC) particles), Int. J. Adv. Sci. Tech., 88, 13-26, 2016.
• [5] Jerome S., Ravisankar B., Mahato P. K., Natarajan S., Fabrication and characterization of in-situ Al-TiC composite, Mater. Sci. Eng., Mater. Sci. Eng., A, 428, 34-40, 2006.
• [6] Rabinowicz E., Friction and wear of materials, John Wiley and Sons, New York, 1965.
• [7] Naveed M., Khan A. R. A., Ultimate tensile strength of heat treated hybrid metal matrix composites, IJSR, 4 (9), 2015.
• [8] Ramakoteswara R. V., Ramanaiah N., Sarcar M. M. M.. Fabrication and investigation on properties of TiC reinforced Al7075 metal matrix composites, App. Mech. Mater., 592, Trans Tech. Publications, 2014.
• [9] Kumar S., Kumar A., Vanitha C., Corrosion behaviour of Al 7075/TiC composites processed through friction stir processing, Mater. Today:. Proc., 15, 21-29, 2019.
• [10] Gandhi C., Dixit N., Mohanty A., Singh B., Study on effect of heat treatment on mechanical properties of AA7075-MWCNT composit, Mater. Today:. Proc., 18, 37-46, 2019.
• [11] Aydın B., AA2014 alaşımında yaşlandırma ısıl işleminin işlenebilirlik üzerindeki etkilerinin incelenmesi, Yüksek Lisans Tezi, Gazi Üniversitesi Fen Bilimleri Enstitüsü, Metal Eğitimi Anabilim Dalı, Ankara, s. 129, 2002.
• [12] Doğan M., Alüminyumların ısıl işlemi, Yüksek Lisans Tezi, İ.T.Ü. Fen Bilimleri Enstitüsü, İstanbul, s. 54, 1989.
• [13] Su S., 2XXX grubu alaşımlarda katı eriyiğe almada sıcaklık ve sürenin yaşlanma sonrası özelliklere etkileri, Yüksek Lisans Tezi, Selçuk Üniversitesi, Fen Bilimleri Enstitüsü, Konya, s. 84, 1988.
• [14] Nalçacıoğlu C.,Toz metalürjisi yöntemi ile üretilen AA7075 alüminyum alaşımlarında T6 ısıl işlem parametrelerinin elektrik iletkenliği ve korozyon özelliklerine etkisi, Yüksek Lisans Tezi, Karabük Üniversitesi, Fen Bilimleri Enstitüsü, Karabük s. 6, 2017. [15] Sharma A., Mishra P. M., Effects of various reinforcements on mechanical behavior of AA7075 hybrid composites, Mater. Today:. Proc., 18, 5258-5263, 2019.
• [16] Gökmeşe H., Karadağ H. B., Examination of microstructure and mechanical properties of powder metal AA 2014-SiC-B4C composite / hybrid materials, GU J. Sci., Part C, 6 (2), 385-398 2018.
• [17] Şimşek İ., The effect of B4C amount on wear behaviors of Al-Graphite/B4C hybrid composites produced by mechanical alloying, BORON, 4 (2), 100-106, 2019.
• [18] Gökmen U., Joining of Al 2024 based B4C/SiC particle-reinforced hybrid composites with TIG welding, Çukurova University Journal of the Faculty of Engineering and Architecture, 31 (1), 69-77, 2016.
• [19] Kamber O., Ateş S., Investigation of tribological behavior of traditional and waste reinforced Al6061 matrix hybrid composites, Journal of Bartin University Engineering and Technological Sciences, 5 (2), 72-78, 2017.
• [20] Gökmen U., fabrication and characterization of hot extruded hybrid composites Al 2024 matrix reinforced with B4C/Al2O3, Journal of Polytechnic, 19 (4), 445-453, 2016.
• [21] Akyuz B., Senaysoy S., Effect of aging on mechanical properties and machining on aluminum alloys, Bilecik Şeyh Edebali University Journal of Science, 1 (1), 1-9, 2014.