Wardhani, Monica Gayatri Kusuma (2020) Pengaruh Variasi Temperatur Solution treatment dan Media Pendinginan pada Proses Heat Treatment Cu-Zn-Al Shape Memory Alloy terhadap Efek Shape Memory dan Struktur Mikro. Other thesis, Institut Teknologi Sepuluh Nopember.
Preview |
Text
0251164000080-Undergraduate_Thesis.pdf Download (3MB) | Preview |
Abstract
Shape memory alloys (SMA) adalah logam paduan yang memiliki kemampuan reversible setelah dideformasi pada temperatur tertentu (disebut sebagai Efek Shape Memory,SME,). SMA seperti paduan Ni-Ti dan Cu-Zn-Al dapat diaplikasikan pada bidang kesehatan, dll. Namun, SMA yang lebih sering digunakan ialah Ni-Ti karena memiliki sifat SME yang lebih baik dari Cu-ZnAl tetapi memiliki harga jual yang mahal. Namun sifat SME paduan Cu-Zn-Al masih dapat dikembangkan menjadi lebih baik. SME sangat dipengaruhi oleh keberadaan fasa martensit pada struktur mikronya. Untuk mendapatkan fasa martensit dan meningkatan SME pada paduan Cu-21Zn-5Al diberikan proses perlakuan panas homogenizing, annealing, solution treatment dan di-quenched dengan media pendingin (brine solution dan dry ice). Paduan yang telah dilakukan perlakuan panas kemudian dilakukan uji kekerasan, X-Ray Difraction, metalografi, SME, dan Differential Scanning Calorimetry untuk mengetahui SME dan struktur mikro Cu-21 Zn-5 Al. Dari hasil pengujian, didapatkan bahwa spesimen yang memiliki nilai SME tertinggi pada spesimen dengan solution treatment temperatur 850oC dan media pendingin brine solution, yaitu 36,67%. Selain itu, pada semua spesimen variasi media pendingin terdapat fasa α, β, (martensit) dan γ.
===============================================================================================================================
Shape memory alloys (SMA) are metal alloys that have a reversible ability at a certain temperature after being deformed (referred to as the Shape Memory Effect, SME,). Shape memory alloys like Ni-Ti and Cu-Zn-Al can be applied to medical tools, automotives, etc. However, the most useable SMA is Ni-Ti because Ni-Ti has better SME than Cu-Zn-Al alloy but the price is quite expensive. Therefore, the SME in Cu-Zn-Al needed to be developed. The SME influenced by the existance of martensite phase in microstructure. To obtain the martensitic phase and good ductility of Cu-21 Zn-5 Al, the alloy will undergo several heat treatmeant process such as homogenizing, annealing, and solution treatment with several cooling media (brine solution and dry ice). Then, on the specimen undergo several testing such as hardness test, X-Ray Difraction (XRD), metallography, shape memory effect, and Differential Scanning Calorimetry (DSC) to find out the shape memory effect and microstructure of Cu-21 Zn-5 Al. As the result, specimen with the highest SME is specimen with solution treatment at 850oC and quenched with brine solution which is 36,67%. Futhermore, the microstructure on each specimen contain several phase which isα, β, β' (martensite) and γ.
| Item Type: | Thesis (Other) |
|---|---|
| Additional Information: | RSMt 671.36 Mon p-1 2020 |
| Uncontrolled Keywords: | Kata Kunci: Shape memory alloy, Paduan Cu-Zn-Al, Perlakuan Panas. |
| Subjects: | T Technology > TJ Mechanical engineering and machinery T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy T Technology > TN Mining engineering. Metallurgy > TN752.I5 Steel--Heat treatment T Technology > TS Manufactures |
| Divisions: | Faculty of Industrial Technology > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Gayatri ak. Monica |
| Date Deposited: | 07 Mar 2025 03:20 |
| Last Modified: | 07 Mar 2025 03:20 |
| URI: | http://repository.its.ac.id/id/eprint/73171 |
Actions (login required)
 |
View Item |