Analisis Pengaruh Temperatur Dan Waktu Sintering Proses Metal Injection Molding Terhadap Densitas, Kekerasan, Dan Mikrostruktur Komposit Fe-Ni

Asyraf, Mohammad (2025) Analisis Pengaruh Temperatur Dan Waktu Sintering Proses Metal Injection Molding Terhadap Densitas, Kekerasan, Dan Mikrostruktur Komposit Fe-Ni. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Proyektil konvensional dalam dunia militer dan keamanan diketahui dapat membahayakan lingkungan, sehingga diperlukan inovasi seperti pengembangan proyektil frangible yang lebih aman. Metal Injection Molding (MIM) merupakan metode yang potensial untuk memproduksi proyektil frangible. Tujuan dari penelitian ini adalah menganalisis pengaruh variasi temperatur dan waktu sintering pada proses MIM terhadap densitas, kekerasan, dan mikrostruktur komposit Fe-Ni. Feedstock Fe-Ni/PA6 diproses melalui MIM membentuk proyektil, diikuti dengan debinding dan sintering pada temperatur 1050, 1125, dan 1200°C selama 30, 60, dan 120 menit. Karakterisasi dilakukan dengan SEM-EDX, FTIR, XRD, uji densitas menggunakan Hukum Archimedes, serta pengujian mekanik dengan alat uji kekerasan dan Universal Testing Machine (UTM). Peningkatan temperatur sintering hingga 1200°C meningkatkan densitas hingga 7,45 g/cm³, nilai kekerasan sebesar 136,58 HV, nilai kuat tekan sebesar 248,69 MPa, dan modulus elastisitas sebesar 57,64 GPa. Kenaikan waktu sintering hingga 120 menit juga meningkatkan nilai densitas hingga 7,54 g/cm³, nilai kekerasan sebesar 133,25 HV, nilai kuat tekan sebesar 247,86 MPa, dan modulus elastisitas sebesar 57,58 GPa. Parameter sintering optimal untuk proyektil frangible adalah pada temperatur 1050°C dengan waktu 30 dan 60 menit. Nilai densitas pada temperatur 1050°C dengan waktu 30 dan 60 menit berturut-turut sebesar 7,04 dan 7,45 g/cm³, sesuai dengan rentang nilai densitas proyektil frangible sebesar 6,12 - 9,55 g/cm³. Nilai kekerasan pada temperatur 1050°C dengan waktu 30 dan 60 menit berturut-turut sebesar 108,5 dan 119 HV sesuai dengan rentang kekerasan proyektil frangible sebesar 54 - 119 HV. Nilai kuat tekan pada temperatur 1050°C dengan waktu 30 dan 60 menit berturut-turut sebesar 211 dan 217 MPa sesuai dengan rentang kuat tekan proyektil frangible sebesar 31-319 MPa.
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Conventional projectiles used in military and security applications are known to pose environmental risks, necessitating innovations such as the development of safer frangible projectiles. Metal Injection Molding (MIM) is a promising manufacturing method for producing frangible projectiles. This study aims to analyze the effects of variations in sintering temperature and time in the MIM process on the density, hardness, and microstructure of Fe-Ni composites. The Fe-Ni/PA6 feedstock was processed using the MIM technique to produce projectiles, followed by debinding and sintering at temperatures of 1050°C, 1125°C, and 1200°C for 30, 60, and 120 minutes. The characterization of the samples was conducted using Scanning Electron Microscope – Energy Dispersive X-Ray (SEM-EDX), Fourier Transform Infrared Spectroscopy (FTIR), and X-Ray Diffraction (XRD). Density measurements were performed based on Archimedes’ principle, while mechanical properties were evaluated through hardness testing and compressive strength testing using a Universal Testing Machine (UTM). The results indicate that an increase in sintering temperature to 1200°C enhances the density to 7.45 g/cm³, hardness to 136.58 HV, compressive strength to 248.69 MPa, and elastic modulus to 57.64 GPa. Furthermore, prolonging the sintering duration to 120 minutes increases the density to 7.54 g/cm³, hardness to 133.25 HV, compressive strength to 247.86 MPa, and elastic modulus to 57.58 GPa. The optimal sintering parameters for frangible projectiles were achieved at a sintering temperature of 1050°C with durations of 30 and 60 minutes. The density values at 1050°C for 30 and 60 minutes were 7.04 g/cm³ and 7.45 g/cm³, respectively, which fall within the density range of frangible projectiles (6.12 - 9.55 g/cm³). The hardness values at 1050°C for 30 and 60 minutes were 108.5 HV and 119 HV, respectively, conforming to the frangible projectile hardness range of 54 - 119 HV. The compressive strength values at 1050°C for 30 and 60 minutes were 211 MPa and 217 MPa, respectively, which fall within the compressive strength range of frangible projectiles (31 - 319 MPa).

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Fe-Ni, Metal Injection Molding, Proyektil Frangible, Fe-Ni, Frangible Projectile, Metal Injection Molding, PA-6
Subjects:	T Technology > TN Mining engineering. Metallurgy > TN799.N6 Nickel--Metallurgy T Technology > TS Manufactures > TS320 Steel--Metallurgy.
Divisions:	Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis
Depositing User:	Mohammad Naufal Asyraf
Date Deposited:	27 Jan 2025 03:56
Last Modified:	27 Jan 2025 03:56
URI:	http://repository.its.ac.id/id/eprint/116930

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