Taguchi Based Gray Relational Analysis of Production Parameters of Al7075/B4C/GNP's Hybrid Composites

Abstract

In this study, metal matrix hybrid composites obtained by adding B4C and graphene nanoplatelets (GNPs) powders as reinforcement elements to Al7075 powders were produced by powder metallurgy (P/M) method. Mixture powders prepared by supplementing Al7075 powders with different weight ratios of B4C (2-5-10%) and GNPs (0.5%) are compressed at room temperature and at different pressing pressures (600-700-800 MPa) and then at different temperatures (500-550- 600C) was sintered in vacuum atmosphere and samples were produced in accordance with ASTM G99 standard. Density and hardness analyzes were carried out depending on the changing production parameters of hybrid composites. It was determined that the pressing pressure had a direct effect on the condensation rate of the samples and the highest density value was 2.6764 g/cm3 in the Al7075+5% B4C+0.5% GNPs sample pressed under 800MPa pressure. The hardness of the samples, on the other hand, generally increased due to the increasing amount of reinforcement element, while it also increased with the increase of pressing pressure and sintering temperature.

Keywords

• Al7075 hybrid composite
• graphene
• powder metallurgy
• taguchi
• characterization

Al7075/B4C/GNP's Hibrit Kompozitlerin Üretim Parametrelerinin Taguchi Tabanlı Gri İlişkisel Analizi

Öz

Bu çalışmada Al7075 tozlarına takviye elemanı olarak B4C ve grafen nanoplatelets (GNPs) tozları beraber katılarak elde edilen metal matriksli hibrit kompozitler toz metalürjisi (T/M) yöntemiyle üretilmiştir. Al7075 tozlarına farklı ağırlık oranlarında B4C (%2-5-10) ve GNPs (%0,5) takviye edilerek hazırlanan karışım tozları oda sıcaklığında ve farklı presleme basınçlarında (600-700-800 MPa) sıkıştırıldıktan sonra farklı sıcaklıklarda (500-550-600C) vakum atmosferinde sinterlenerek ASTM G99 standartına uygun numuneler üretilmiştir. Hibrit kompozitlerin değişen üretim parametrelerine bağlı olarak yoğunluk, sertlik analizleri gerçekleştirilmiştir. Numunelerin yoğunlaşma oranı üzerine presleme basıncının doğrudan etkili olduğu ve en yüksek yoğunluk değeri 2,6764 g/cm3 ile 800MPa basınç altında preslenen Al7075+%5 B4C+%0,5 GNPs numunesinde belirlenmiştir. Numunelerin sertliği ise genel olarak artan takviye elemanı miktarına bağlı artarken presleme basıncı ve sinterleme sıcaklığının artması ile de artış göstermiştir.

Anahtar Kelimeler

• Al7075 hibrit kompozit
• grafen
• toz metalürjisi
• taguchi
• karakterizasyon

Kaynakça

1. [1] X.Y. Liu. Q.L. Pan. X. Fan. Y.B. He. W.B. Li. W.J. Liang. Microstructural evolution of Al–Cu–Mg–Ag alloy during homogenization. J. Alloys Compd. 484 (2009) 790–794.
2. [2] K.R. Ramkumar. S. Sivasankaran. F.A. Al-mufadi. S. Siddharth. and R. Raghu. Investigations on microstructure. mechanical. and tribological behaviour of AA7075–x wt.% TiC composites for aerospace applications. Arch. Civ. Mech. Eng.. 19(2019). No. 2. p. 428.
3. [3] Mondolfo. L. F. (2013). Aluminum alloys: structure and properties. Elsevier.
4. [4] Wohlecker. R.. Johannaber. M.. & Espig. M. (2007). Determination of weight elasticity of fuel economy for ICE. hybrid and fuel cell vehicles (No. 2007-01-0343). SAE Technical Paper.
5. [5] Altuntaş. G.. & Bostan. B. 7075 Al Alaşımına Uygulanan Kriyojenik ve Doğal Yaşlandırma İşleminin Avrami Parametresine Etkisi. Gazi University Journal of Science Part C: Design and Technology. 10(4). 691-698.
6. [6] Altuntaş. G.. Altuntaş. O.. & Bostan. B. (2021). Characterization of Al-7075/T651 Alloy by RRA Heat Treatment and Different Pre-deformation Effects. Transactions of the Indian Institute of Metals. 74. 3025-3033.
7. [7] Zhang. J.. & Peng. J. (2023). A review on aluminum alloy conductors influenced by alloying elements and thermomechanical treatments: Microstructure and properties. Journal of Materials Research. 1-22.
8. [8] Zhang, H., Xu, C., Xiao, W., Ameyama, K., & Ma, C. (2016). Enhanced mechanical properties of Al5083 alloy with graphene nanoplates prepared by ball milling and hot extrusion. Materials Science and Engineering: A, 658, 8-15.

9. [9] Du, X., Du, W., Wang, Z., Liu, K., & Li, S. (2018). Ultra-high strengthening efficiency of graphene nanoplatelets reinforced magnesium matrix composites. Materials Science and Engineering: A, 711, 633-642.
10. [10] A. Dorri Moghadam, E. Omrani, P.L. Menezes, P.K. Rohatgi, Mechanical and tribological properties of self-lubricating metal matrix nanocomposites reinforced by carbon nanotubes (CNTs) and graphene – A review, Compos. Part B Eng. 77 (2015) 402–420.
11. [11] Kumar, R.; Chauhan, S. Study on surface roughness measurement for turning of Al 7075/10/SiCp and Al 7075 hybrid composites by using response surface methodology (RSM) and artificial neural networking (ANN). Meas. J. Int. Meas. Confed. 2015, 65, 166–180.
12. [12] Alam, M. A., Ya, H. H., Yusuf, M., Sivraj, R., Mamat, O. B., Sapuan, S. M., ... & Sattar, M. (2021). Modeling, optimization and performance evaluation of tic/graphite reinforced al 7075 hybrid composites using response surface methodology. Materials, 14(16), 4703.
13. [13] Yusuf, M.; Farooqi, A.S.; Alam, M.A.; Keong, L.K.; Hellgardt, K.; Abdullah, B. Response surface optimization of syngas production from greenhouse gases via DRM over high performance Ni–W catalyst. Int. J. Hydrogen Energy 2021.
14. [14] Surya, M. S., Prasanthi, G., & Gugulothu, S. K. (2021). Investigation of mechanical and wear behaviour of Al7075/SiC composites using response surface methodology. Silicon, 13, 2369-2379.
15. [15] Muthukrishnan, N., & Davim, J. P. (2009). Optimization of machining parameters of Al/SiC-MMC with ANOVA and ANN analysis. Journal of materials processing technology, 209(1), 225-232.
16. [16] Kalyon. A.. Günay. M.. & Özyürek. D. (2018). Application of grey relational analysis based on Taguchi method for optimizing machining parameters in hard turning of high chrome cast iron. Advances in Manufacturing. 6(4). 419-429.
17. [17] Çakıroğlu. R. (2021). Machinability Analysis of Inconel 718 Superalloy with AlTiN-Coated Carbide Tool Under Different Cutting Environments. Arabian Journal for Science and Engineering. 1-19.
18. [18] Uzun. G. (2019). Analysis of grey relational method of the effects on machinability performance on austempered vermicular graphite cast irons. Measurement. 142. 122-130.
19. [19] Çakıroğlu. R.. & Günay. M. (2020). Comprehensive analysis of material removal rate. tool wear and surface roughness in electrical discharge turning of L2 tool steel. Journal of Materials Research and Technology. 9(4). 7305-7317.