Indrajati, Muhammad Nur (2021) Analisis Pengaruh Variasi Quenchant Solution Treatment dan Holding Time Artificial Aging Terhadap Struktur Mikro dan Kekerasan Paduan Cu-Zn-Al Pada Bahan Shape Memory Alloy. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Shape memory alloy merupakan sebuah paduan pintar. Salah satu jenis paduan tersebut adalah paduan Cu-Zn-Al. Pada penelitian ini menggunakan paduan Cu-11,9Zn-6,72Al untuk menganalisis pengaruh variasi media pendingin proses solution treatment dan variasi holding time proses artificial aging pada Cu-Zn-Al terhadap struktur mikro dan kekerasan pada bahan shape memory alloy. Kemudian dilakukan pengujian yaitu OES, XRD, metalografi dan kekerasan. Struktur mikro hasil solution treatment dengan variasi media pendingin brine dan ice water memiliki perbedaan pada bentuk fasa α. Kekerasan hasil solution treatment menggunakan media pendingin brine memiliki nilai kekerasan yang lebih besar dibandingkan media pendingin ice water dengan nilai sebesar 181,33 ± 5,43 HV. Struktur mikro hasil artificial aging dengan variasi holding time 8 jam memiliki twinned martensite yang lebih gelap dibandingkan variasi holding time lainnya. Kekerasan hasil artificial aging meningkat dari variasi holding time 4 jam hingga 8 jam, dengan nilai kekerasan tertinggi variasi holding time 8 jam menggunakan media pendingin ice water sebesar 248,67 ± 10,65 HV.
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Shape memory alloy is a smart alloy. One of these alloys is Cu-Zn-Al alloy. In this study, the Cu-11.9Zn-6.72Al alloy was used to analyze the effect of variations in the cooling medium for the solution treatment process and variations in holding time for the artificial aging process of Cu-Zn-Al on the microstructure and hardness in shape memory alloy materials. Then the tests were carried out, namely OES, XRD, metallography and hardness. The microstructure of the solution treatment with variations in the cooling media of brine and ice water has a difference in the shape of the phase. The hardness of the solution treatment using brine cooling media has a greater hardness value than ice water cooling media with a value of 181.33 ± 5.43 HV. The artificial aging microstructure with a holding time variation of 8 hours has twinned martensite which is darker than other holding time variations. The hardness of the artificial aging results increased from a holding time variation of 4 hours to 8 hours, with the highest hardness value of a holding time variation of 8 hours using ice water as a cooling medium of 248.67 ± 10.65 HV.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Cu-Zn-Al, Artificial Aging, Solution Treatment, Microstructure, Hardness, Cu-Zn-Al, Artificial Aging, Solution Treatment, Struktur Mikro, Kekerasan |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA418.42 Hardness properties and tests. Hardness--Testing. T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy T Technology > TS Manufactures > TS205 Metals--Heat treatment. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering |
| Depositing User: | Muhammad Nur Indrajati |
| Date Deposited: | 12 Aug 2021 13:18 |
| Last Modified: | 12 Aug 2021 13:18 |
| URI: | http://repository.its.ac.id/id/eprint/85865 |
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