KARAKTERISTIK MEKANIK DAN BALISTIK KOMPOSIT Al-8Zn-4Mg-20 VOL.% SiC HASIL PROSES SQUEEZE CASTING DAN PERLAKUAN PENUAAN
DOI:
https://doi.org/10.21776/jrm.v15i1.1819Keywords:
Age Hardening, Al-Mg-Zn Alloy, Ballistic Test, Squeeze Casting, Strengthened by SiC, Thermal Spray CoatingAbstract
Armoured Personnel Carrier (APC) as a means to support the mobility of TNI must have high toughness so that they are not easily penetrated by bullets. The APCs are commonly made of steel due to their excellent toughness and ballistic properties, however, it has a high density that reduces their mobility. Therefore, an alternative material is needed, which is lighter but remains tough. One option is Metal Matric Composites (MMC). This research studied a composite with Al-8Zn-4Mg alloy as the matrix and 20 vol. % SiC as the reinforcement. The composite was melted in a muffle furnace, stirred at 500 rpm, and squeeze-cast at the pressure of 20 tons. The samples were then solution-treated at 500°C for 1 h and aged at 200°C for up to 100 h. Characterization included hardness and impact testing, optical microscopy, and Scanning Electron Microscope - Energy Dispersive X-ray (SEM-EDX). The samples were then thermal coated by the High-Velocity Oxygen Fuel (HVOF) method using WC-Co particles. The coated samples underwent ballistic testing in accordance with NIJ 0108.01 standard by using a type III 7.56 mm caliber projectile. The results show that the hardness and impact energy increased with aging due to the formation of Mg2Si and Mg3Zn3Al2 precipitates. Peak hardness conditions after aging for 2 h generated hardness of 90,25 HRB and impact energy of 3 Joules. The composite plate failed and was penetrated by a type III 7.56 mm caliber projectile.
References
Ancaman Strategis, http://dmc.kemhan.go.id, diakses 30 November 2023.
Tugas Pokok TNI, http://tni.mil.id, diakses 30 November 2023.
Tank TNI AD, http://indomiliter.com, diakses 30 November 2023.
Idris, J., Salim, F., Suliman, Z., & Osman, E. (2003). Kajian Sifat Kehausan Dan Kekerasan Komposit Matriks Aluminium. Jurnal Teknologi, 38, 11-24.
Ashwath, P., & Xavior, M. (2018). Effect of ceramic reinforcements on microwave sintered metal matrix composites. Materials and Manufacturing Processes, 33, 12 - 7.
Ramesh, S., Govindaraju, N., & Suryanarayan, C. P. (2018). Investigation on Mechanical and Fatigue behaviour of Aluminium Based SiC/ZrO2 Particle Reinforced MMC. IOP Conference Series: Materials Science and Engineering, 346(1), pp. 1-8.
Gupta, T., Srivastava, A., & Srivastava, V. (2021). Microstructural and tensile behaviour of hybrid MMC Al7075/ SiC/B4C produced by mechanical stir casting.Materials Today: Proceedings. 47 (13), 4107-4113.
Skolianos, Stefanos. (1996). Mechanical behaviour of cast SiCp-reinforced Al–4.5% Cu– 1.5% Mg alloy. Mater. Sci. Eng. A 210, 76–82.
M.B. Karamis, A. Tasdemirci, F. Nair. (2003). Failure and tribological behavior of the AA5083 and AA6063 composites reinforced by SiC particles under ballistic impact. Composites Part A A34, 217–226.
Dasgupta. R.T., Meenai. Humaira. (2005). SiC particulate dispersed composites of an Al–Zn–Mg–Cu alloy: Property comparison with parent alloy. Materials Characterization, 54, 438–445.
Rahmalina, D., Sofyan, B. T., Suharno, B., & Siradj, E. S. (2012). Pengaruh Fraksi Volume Penguat Silikon Karbida terhadap Karakteristik Balistik Komposit Aluminium. Majalah Pengkajian Industri., 6(1), 51-56.
Sofyan, B. T., Aksari, L., Septiani, A., & Rahmalina, D. (2015). Effects of Magnesium Content on Ballistic Performance of Al-8Zn-SiC Composite after Heat Treatment Process. Applied Mechanics and Materials, 752-753, 44–60.
U.S. Department of Justice. (1985). NIJ Standard 0108.01. Ballistic Resistance Protective Materials.
K, J. P., M.C, G. S., Kinia, A., S.S, S., & Shettya, R. (2013). Effect of Silicon Carbide (SiC) on Stir Cast Aluminium Metal Matrix Hybrid Composites – A Review. International Journal of Current Engineering and Technology, 3(1), 1061–1071.
Kheder, A. R. I., Marahleh, G. S., & Al-Jamea, D. M. K. (2011). Strengthening of aluminum by SiC, Al2O3 and MgO. Jordan Journal of Mechanical and Industrial Engineering, 5(6), 533–541.
Syakuura, A., Sofyan, B. T., & Ringer, S. P. (2012). Sifat Mekanis dan Pengerasan Presipitasi Paduan Al-Zn-Mg dengan Variasi Kandungan Cu Selama Ageing pada Temperatur 120°C. Majalah Ilmu dan Teknologi – Metalurgi, 27(2), 85-94.
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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.