Image of PENGARUH VARIASI PENEKANAN TERHADAP KEKERASAN DAN STRUKTUR MIKRO AMC BERPENGUAT 3% PKSA DAN 1% SIC MENGGUNAKAN STIR-SQUEEZE CASTING
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PENGARUH VARIASI PENEKANAN TERHADAP KEKERASAN DAN STRUKTUR MIKRO AMC BERPENGUAT 3% PKSA DAN 1% SIC MENGGUNAKAN STIR-SQUEEZE CASTING

This study aims to analyze the effect of pressure variation in the stir-squeeze casting process on the hardness and microstructure of Aluminum Matrix Composites (AMCs) reinforced with 3% Palm Kernel Shell Ash (PKSA) and 1% Silicon Carbide (SiC). The matrix material used was 6063 aluminum alloy, with the addition of 1% magnesium (Mg) to enhance wettability between the matrix and the reinforcement particles. The composites were fabricated using three different pressures: 10 MPa, 21 MPa, and 31 MPa, with a holding time of 45 seconds. The specimens were tested using Brinell hardness (BHN), optical microscopy for microstructure analysis, X-Ray Fluorescence (XRF) for elemental composition, and Scanning Electron Microscopy (SEM) for surface morphology observation. The results show that increasing the squeeze pressure significantly improves both the hardness and microstructural homogeneity of the composite. At a lower pressure (10 MPa), particle agglomeration and high porosity were still observed, while at 21 MPa, the particle distribution became more uniform. The highest pressure (31 MPa) produced the most homogeneous structure with low porosity and strong interfacial bonding. The average hardness increased from ±45.48 BHN to ±62.35 BHN as the pressure increased. Therefore, the optimum pressure was found at 31 MPa, where the combination of PKSA and SiC reinforcement enhanced the hardness and refined the grain morphology. This study demonstrates that PKSA can serve as an economical, sustainable, and eco-friendly natural reinforcement, making it a promising material for lightweight automotive and aerospace applications.

Availability
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Central Library (Reference) T1858072025
T185807
Available but not for loan - Not for Loan
Detail Information
Series Title
-
Call Number
T1858072025
Publisher
Indralaya : Prodi Teknik Mesin, Fakultas Teknik Universitas Sriwijaya.,
Collation
xxvi, 76 hlm.; ilus.; tab.; 29 cm.
Language
Indonesia
ISBN/ISSN
-
Classification
621.807
Content Type
Text
Media Type
unmediated
Carrier Type
other (computer)
Edition
-
Subject(s)
Prodi Teknik Mesin
Kekerasan dan Struktur Mikro AMC
Specific Detail Info
-
Statement of Responsibility
Other version/related
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