Widyanugraha, Rio Mahesa (2023) Analisis Pengaruh Media Pendingin Solution Treatment Dan Temperatur Artificial Aging Pada Shape Memory Alloy Cu-1,89mn-12,1al Terhadap Struktur Mikro, Kekerasan Dan Shape Memory Effect. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Shape Memory Alloy (SMA) merupakan material paduan yang memiliki kemampuan unik yaitu material yang telah mengalami deformasi dapat kembali ke bentuk semula setelah dilakukan pemanasan pada temperatur tertentu. Material SMA yang digunakan pada penelitian ini yaitu SMA berbasis Cu dengan paduan Cu-1,89Mn-12,1Al. Penelitian ini akan menganalisis variabel media pendingin solution treatment yaitu air dan brine, dan juga variabel temperatur artificial aging pada temperatur 100℃, 200℃, dan 300℃. Perlakuan panas yang diterapkan yaitu homogenizing, annnealing, solution treatment dan artificial aging. Pengujian yang akan digunakan yaitu pengujian Optical Emission Spectroscopy (OES), pengujian metalografi, pengujian X-Ray Diffraction (XRD), pengujian Differential Scanning Calorimetry (DSC), pengujian kekerasan, dan pengujian Shape Memory Effect (SME) pada paduan Cu-12,1Al- 1,89Mn. Hasil dari penelitian ini, didapat pengaruh media pendingin brine mengakibatkan terbentuknya struktur mikro twinned martensite dengan ukuran yang lebih kecil, kekerasan yang lebih tinggi dan shape memory effect yang lebih baik dibandingkan dengan media pendingin air. Pengaruh temperatur artificial aging mengakibatkan ukuran struktur mikro twinned martensite bertambah lebar dan akhirnya berdekomposisi, fasa β bertambah luas, serta mengakibatkan munculnya presipitat γ yang menaikkan nilai kekerasan dan menurunnya kemampuan shape memory effect dikarenakan berkurangnya twinned martensite. Kekerasan terbesar didapat oleh spesimen dengan perlakuan panas solution treatment menggunakan media pendingin brine dan dilanjutkan dengan artificial aging pada temperatur 300℃ sebesar 324,4 ± 4,16 VH, sedangkan shape recovery terbesar didapat oleh spesimen dengan perlakuan panas solution treatment menggunakan media pendingin brine sebesar 65%
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Shape Memory Alloy (SMA) is an alloy material that has a unique ability, namely that the deformed material can return to its original shape after heating at a certain temperature. The SMA material that used in this research is Cu-based SMA with Cu-1,89Mn-12,1Al alloy. This research analyze the solution treatment cooling media variables, namely water and brine, and also the artificial aging temperature variables at temperatures of 100℃, 200℃, and 300℃. The heat treatments that applied are homogenizing, annealing, solution treatment and artificial aging. The tests that used in this research are Optical Emission Spectroscopy (OES) testing, metallographic testing, X-Ray Diffraction (XRD) testing, Differential Scanning Calorimetry (DSC) testing, hardness testing, and Shape Memory Effect (SME) testing of the Cu-12,1Al- 1,89Mn alloy. The results of this study showed that the influence of the brine cooling medium resulted in the formation of a twinned martensite microstructure with a smaller size, higher hardness and a better shape memory effect compared to the water cooling medium. The effect of artificial aging temperature causes the size of the twinned martensite microstructure getting wider and eventually decomposes, the β phase expands, and causes the appearance of γ precipitates which increase the hardness value and decrease the ability of the shape memory effect due to reduced twinned martensite. The highest hardness was obtained by specimen with solution heat treatment using brine cooling medium and continued with artificial aging at 300℃, which was 324.4 ± 4.16 VH, while the largest shape recovery was obtained by specimen with solution heat treatment using brine cooling media. i.e. 65%
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Artificial Aging, Media Pendingin, Shape Memory Alloy, Solution Treatment Artificial Aging, Cooling Media, Shape Memory Alloy, Solution Treatment |
| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) > TA480.A6 Aluminum alloys. T Technology > TN Mining engineering. Metallurgy > TN775 Aluminum alloys--Metallurgy. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Rio Mahesa Widyanugraha |
| Date Deposited: | 08 Feb 2023 06:14 |
| Last Modified: | 08 Feb 2023 06:14 |
| URI: | http://repository.its.ac.id/id/eprint/96441 |
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