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PENGARUH PERLAKUAN PANAS ANNEALING DENGAN TEMPERATUR 600℃ SELAMA 5 JAM TERHADAP KETAHANAN FATIGUE PUNTIR PADA MATERIAL KUNINGAN (CU-ZN)

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Brass (Cu–Zn) is a non-ferrous alloy widely used in engineering applications due to its workability, ductility, and corrosion resistance. However, under cyclic loading, the material is susceptible to fatigue failure. Heat treatment through annealing is commonly applied to refine the microstructure and improve ductility, yet its influence on torsional fatigue behavior remains insufficiently understood. This study aims to examine the effect of annealing at 600°C for 5 hours on the torsional fatigue resistance of brass. Fatigue testing was conducted on specimens without heat treatment (NHT) and with heat treatment (HT) using torsion angles of 4°, 5°, and 6°. The parameters evaluated include the number of cycles to failure (N), torsional stress (τ), and macroscopic fracture characteristics. The results show that NHT specimens exhibit significantly higher fatigue resistance compared to HT specimens. At torsion angles of 4°, 5°, and 6°, NHT specimens withstood 7,436,650; 1,227,350; and 475,850 cycles, respectively, whereas HT specimens only endured 977,950; 425,833; and 189,300 cycles. Nevertheless, annealing increased the tensile strength, yield strength, and elongation of the material. Macroscopic observation revealed that HT specimens experienced faster crack initiation and propagated in a more brittle manner. Therefore, annealing at 600°C for 5 hours enhances the tensile properties of brass but reduces its torsional fatigue resistance.

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Detail Information

Series Title

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Call Number

T1893782025

Publisher

Indralaya : Prodi Teknik Mesin, Fakultas Teknik Universitas Sriwijaya., 2025

Collation

xxix, 84 hlm.; ilus.; tab.; 29 cm

Language

Indonesia

ISBN/ISSN

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Classification

620.163 07

Content Type

Text

Media Type

-

Carrier Type

-

Edition

-

Subject(s)

Prodi Teknik Mesin
Kekuatan Mekanik--Pengujian Logam

Specific Detail Info

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Statement of Responsibility

MI

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