Analisis Pengaruh Variasi Temperatur dan Waktu Penuaan (Aging) Perlakuan Panas T6 Terhadap Pembentukan Intermetalik Pada Hasil Coran Remelting AA 6061. (Analysis of the Effect of Temperature Variation and Aging Time in T6 Heat Treatment on Intermetallic Formation in Remelted Casts of AA 6061).

Taufiqulhakim, Akmal (2026) Analisis Pengaruh Variasi Temperatur dan Waktu Penuaan (Aging) Perlakuan Panas T6 Terhadap Pembentukan Intermetalik Pada Hasil Coran Remelting AA 6061. (Analysis of the Effect of Temperature Variation and Aging Time in T6 Heat Treatment on Intermetallic Formation in Remelted Casts of AA 6061). Undergraduate thesis, Universitas 17Agustus 1945 Surabaya.

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Abstract

AA 6061 aluminum alloy is widely used in structural applications due to its combination of lightweight properties, excellent corrosion resistance, and the ability to be strengthened through heat treatment. In re-melted materials, the remelting process has the potential to increase the formation of intermetallic compounds, particularly Fe–Si-based phases, which are hard and brittle and may reduce the ductility and mechanical performance of the alloy. Therefore, controlling the parameters of T6 heat treatment is essential to optimize the microstructure of this alloy. This study aims to analyze the effect of aging temperature and holding time variations during T6 heat treatment on the formation of intermetallic compounds in re-melted AA 6061 castings. The experimental procedure consisted of remelting AA 6061 using the ingot casting method, followed by solution heat treatment at 540°C for 1 hour, water quenching, and artificial aging at temperatures of 165°C, 185°C, and 205°C with holding times of 1.5, 2.5, and 3.5 hours. Microstructural characterization and intermetallic compound identification were carried out using Scanning Electron Microscopy coupled with Energy Dispersive X-ray Spectroscopy (SEM–EDX). Based on previous studies, variations in aging temperature and holding time significantly influence the precipitation of Mg₂Si and the distribution of Fe–Si intermetallic phases, which directly affect the mechanical properties of 6xxx series aluminum alloys. The findings of this study are expected to provide a scientific understanding of the relationship between aging parameters and intermetallic evolution, as well as serve as a basis for determining the optimum T6 heat treatment conditions for re-melted AA 6061.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	AA 6061, T6 Heat Treatment, Re-melting, Artificial Aging, Fe–Si Intermetallics
Subjects:	T Technology > TJ Mechanical engineering and machinery
Divisions:	Fakultas Teknik > Program Studi Teknik Mesin
Depositing User:	1422200149 AKMAL TAUFIQULHAKIM
Date Deposited:	24 Aug 2026 05:45
Last Modified:	24 Aug 2026 05:45
URI:	http://repository.untag-sby.ac.id/id/eprint/47604

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