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PENGARUH PERLAKUAN PANAS TERHADAP TRANSFORMASI FASA Ti-6Al-4V GRADE 23 HASIL SELECTIVE LASER MELTING

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Ti-6Al-4V Grade 23 is a biomaterial widely used for implant applications due to its high strength, good corrosion resistance, and excellent biocompatibility. The Selective Laser Melting (SLM) process produces a martensitic α′ microstructure with high residual stress, which requires heat treatment to improve microstructural stability and material properties. This study aims to analyze the effect of heat treatment on phase characteristics, mechanical properties, and surface chemical condition of SLM-produced Ti-6Al-4V. The methods included heat treatment at temperatures of 850 °C, 925 °C, and 950 °C, phase characterization using X-Ray Diffraction (XRD), mechanical testing through tensile tests, and surface chemical analysis using X-Ray Photoelectron Spectroscopy (XPS).The XRD results showed that all specimens were dominated by α-Ti/α′ phases, while β-Ti was not significantly detected due to its low volume fraction. Tensile test results indicated that heat treatment affected the balance between strength and ductility, with a decrease in elongation at the highest temperature caused by α microstructure coarsening and a reduction in mobile dislocations. XPS analysis confirmed the formation of titanium-based oxide layers on all specimens, with the most stable oxide layer observed at 950 °C, indicated by dominant Ti–O bonding and reduced adsorbed species.In conclusion, heat treatment modifies the microstructure and improves surface chemical stability, but excessively high temperatures may reduce material ductility.

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Detail Information

Series Title

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Call Number

T1931882026

Publisher

Indralaya : Prodi Teknik Mesin, Fakultas Teknik Universitas Sriwijaya., 2026

Collation

xxix, 70 hlm.; ilus.; tab.; 29 cm.

Language

Indonesia

ISBN/ISSN

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Classification

673.722 07

Content Type

Text

Media Type

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Carrier Type

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Edition

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Subject(s)

Prodi Teknik Mesin
Perlakuan Panas Transformasi

Specific Detail Info

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Statement of Responsibility

MI

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