Fabrication and Mechanical Behavior of Aluminum Matrix Composites Reinforced with Nano Alumina Particles

Yıl 2019, Cilt: 7 Sayı: 3, 1341 - 1350, 31.07.2019

Mevlüt Gürbüz , Mahmut Can Şenel

https://doi.org/10.29130/dubited.518527

Öz

In the
present work, nano alumina (Al₂O₃) reinforced aluminum
(Al) matrix composites with various alumina content (0-2.5wt.%) were fabricated
by powder metallurgy method. This method occurs of mixing, ultrasonic
dispersion, filtering, drying, pressing, and sintering processes. The effects
of nano alumina amount on the Vickers hardness, apparent density, compressive
strength, and microstructure of nano alumina reinforced aluminum matrix
composites were investigated. The maximum apparent density (2.66 g/cm³),
Vickers hardness (43±1 HV), and compressive strength (130±3 MPa) were
determined at Al-2wt.%Al₂O₃ composite. After 2wt.% nano
alumina content, the agglomeration was detected by a scanning electron
microscope (SEM). This agglomeration deteriorated the mechanical properties of
nano alumina reinforced aluminum composites.

 

Anahtar Kelimeler

Aluminum, Alumina, Hardness, Density, Strength

Fabrication and Mechanical Behavior of Aluminum Matrix Composites Reinforced with Nano Alumina Particles

Öz

Bu
çalışmada nano alümina (Al₂O₃) takviyeli alüminyum (Al)
matrisli kompozitler (ağ. % 0-2.5) toz metalurjisi yöntemiyle üretilmiştir. Bu
yöntem karıştırma, ultrasonik dağıtma, filtreleme, kurutma, presleme ve
sinterleme işlemlerinden oluşmaktadır. Nano alümina miktarının Vickers
sertliği, yoğunluk, basma dayanımı ve kompozitlerin mikroyapıları üzerindeki
etkileri incelenmiştir. Maksimum yoğunluk (2.66 g/cm³), Vickers
sertliği (43±1 HV) ve basma dayanımı (130±3 MPa), ağırlıkça % 2 Al₂O₃
takviyeli Al kompozit yapıda elde edilmiştir. Ağırlıkça %2 nano alümina
katkısından sonra, topaklanma oluşumu taramalı elektron mikroskobu (SEM) ile
tespit edilmiştir. Bu topaklanmalar nano alümina takviyeli alüminyum
kompozitlerin mekanik özelliklerini olumsuz etkilemiştir.

Anahtar Kelimeler

Alüminyum, Alümina, Sertlik, Yoğunluk, Dayanım

Kaynakça

• [1] G. O’Donnel and L. Looney, “Production of Aluminium Matrix Composite Component Using Conventional PM Technology,” Materials Science and Engineering A, vol. 303, pp. 292–301, 2001.
• [2] O.G. Neikow, S.S. Naboychenko, and G. Dawson, Handbook of Non-Ferrous Metal Powders-Technologies and Applications, 1st edition, Amsterdam, Holland: Elsevier Ltd, 2009 pp. 634.
• [3] B. Ramesh and T. Senthilvelan, Formability Characteristics of Aluminium Based Composites-a Review, International Journal of Engineering&Technology, vol. 2, pp. 1-6, 2010.
• [4] K.K. Alaneme and M.O. Bodunrin, “Mechanical Behaviour of Alumina Reinforced AA6063 Metal Matrix Composites Developed by Two Step-Stir Casting Process”, Acta Technica Corviniensis, Bulletin of Engineering, tome VI, fasicule 3, 2013.
• [5] K.K. Alaneme, “Influence of Thermo-mechanical Treatment on the Tensile Behaviour and CNT evaluated Fracture Toughness of Borax Premixed Silicon Carbide Reinforced Aluminium (6063) Matrix Composites”, International Journal of Materials and Mechanical Engineering, vol. 7, no. 1, pp. 96-100, 2012.
• [6] G.B. Veeresh Kumar, C.S.P. Rao, N. Selvaraj, and M.S. Bhagyashekar, “Studies on Al (6061) and 7075-Al203 Metal Matrix Composites”, Journal of Minerals and Materials Characterization and Engineering, vol. 9, no. 1, pp. 43-55, 2010.
• [7] N. Natarajan, S. Vijayarangan, and I. Rajendran, “Fabrication, Testing and Thermal Analysis of Metal Matrix Composite Brake Drum”, International Journal of Vehicle Design, vol. 443, no. 4, pp. 339-359, 2007.
• [8] T. Mutuk, M. Gürbüz, “Fabricating Graphene-Titanium (<30 µm) Composites by Powder Metallurgy Method: Microstrructure and Mechanical Properties”, Düzce University Journal of Science&Technology, vol. 7, pp. 89-97, 2019.
• [9] M. Pul, Alüminyum 7075 Matrisli Kompozitlerde SiC, B4C ve TiB2 Takviye Elemanlarının Mekanik Özelliklere Etkilerinin Karşılaştırılması”, Düzce Üniversitesi Bilim ve Teknoloji Dergisi, vol. 7, pp. 180-193, 2019.
• [10] A. Özkan, N. Şişik, U. Öztürk, “Kompozit Malzemelerin Ağız, Yüz, Çene Cerrahisinde Kullanımı ve Malzeme Uygunluklarının Belirlenmesi”, Düzce Üniversitesi Bilim ve Teknoloji Dergisi, vol. 4, pp. 227-242, 2016.
• [11] H.R. Ezatpour, M. Torabi Parizi, S.A. Sajjadi, G.R. Ebrahimi, and A. Chaichi, “Microstructure, Mechanical Analysis and Optimal Selection of 7075 Aluminum Alloy Based Composite Reinforced with Alumina Nanoparticles”, Materials Chemistry and Physics, vol. 178, pp. 119-127, 2016.
• [12] N. Srivastava and G.P. Chaudhari, “Microstructural Evolution and Mechanical Behavior of Ultrasonically Synthesized Al6061-Nano Alumina Composites”, Materials Science and Engineering A, vol. 724, pp. 199-207, 2018.
• [13] M. Kok, “Production and Mechanical Properties of Al2O3 Particle-Reinforced 2024 Aluminium Alloy Composites”, Journal of Materials Processing Techology, vol. 161, pp. 381–387, 2005.
• [14] S.A. Sajjadi, H.R. Ezatpour, and H. Beygi, “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.
• [15] M.C. Şenel, M. Gürbüz, and E. Koç, The Fabrication and Characterization of Synergistic Al-SiC-GNPs Hybrid Composites”, Composites Part B-Eng., vol. 154, pp. 1-9, 2018.
• [16] M. Gürbüz, M.C. Şenel, and E. Koç, “The Effect of Sintering Temperature, Time and Graphene Addition on the Mechanical Properties and Microstructure of Aluminum Composites”, Journal of Composite Materials, vol. 52, no.4, pp. 553-563, 2018. [17] M.C. Şenel, M. Gürbüz, E. Koç, “Mechanical and Tribological Behaviors of Aluminum Matrix Composites Reinforced by Graphene Nanoplatelets”, Journal of Materials Science and Technology, vol. 34, no. 16, pp. 1980-1989, 2018.