Saadah, Yunia (2023) Analisis Pengaruh Media Pendingin Solution Treatment Dan Holding Time Up-Quenching Pada Paduan Cu-12,1Al-1,89Mn Terhadap Struktur Mikro, Sifat Mekanik, Dan Shape Memory Effect. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Paduan SMA Cu-Al-Mn mampu menjawab tantangan dan kendala pada bidang otomotif karena memiliki range temperatur yang cukup luas sekitar -40oC hingga 125 oC. Perlakuan panas yang diberikan pada paduan Cu-Al-Mn diantaranya homogenizing, annealing dan solution treatment. Kemudian material di quenching dengan media pendingin brine dan air, lalu dilanjutkan dengan up-quenching pada boiling water dengan variasi waktu 20,40 dan 60 menit. Setelah rangkaian perlakuan tersebut, akan dilakukan pengujian komposisi, XRD, metalografi, DSC, SME dan kekerasan. Struktur mikro hasil variasi media pendingin brine dan water dengan holding time up-quenching yang sama menunjukkan fasa β’ memiliki jumlah yang lebih besar dan fasa α lebih sedikit pada media pendingin brine. Selanjutnya spesimen pada variasi holding time up-quenching mengalami kenaikan jumlah fasa β’ seiring dengan peningkatan holding time up-quenching. Keberadaan fasa α yang lebih sedikit pada media pendingin brine dibandingkan media pendingin water menyebabkan nilai kekerasan media pendingin brine lebih besar pula dengan nilai 260 ± 2,94 HV , 271,3 ± 1,35 HV dan 277,1 ± 1,64 HV untuk B20, B40 dan B60. Pertambahan jumlah fasa β’ juga seiring dengan peningkatan recovery SMA. Sehingga didapatkan recovery terbesar pada spesimen B60 dengan nilai recovery 95% dan nilai recovery terkecil pada spesimen W20 sebesar 60%
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SMA Cu-Al-Mn alloy is able to answer challenges and constraints in the automotive field because it has a fairly wide temperature range of around -40oC to 125oC. The heat treatment given to the Cu-Al-Mn alloy includes homogenizing, annealing and solution treatment. Then the material was quenched with brine and water cooling media, then followed by up-quenching in boiling water with variations of 20, 40 and 60 minutes. After the treatment series, composition, XRD, metallographic, DSC, SME and hardness tests will be carried out. The microstructure resulting from variations in brine and water cooling media with the same holding time up-quenching shows that the β' phase has a greater amount and the α phase is less in the brine cooling medium. Furthermore, the specimens at the holding time up-quenching variation experienced an increase in the number of β' phases along with the increase in the holding time up-quenching. The presence of less α phase in the brine cooling medium compared to the water cooling medium causes the hardness value of the brine cooling medium to be also greater with values of 260 ± 2.94 HV , 271.3 ± 1.35 HV and 277.1 ± 1.64 HV for B20, B40 and B60. The increase in the number of β' phases is also in line with the increase in SMA recovery. So that the greatest recovery was obtained on the B60 specimen with a recovery value of 95% and the smallest recovery value on the W20 specimen was 60%
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Shape Memory Alloy, Cu-Al-Mn, media pendingin, up-quenching, struktur mikro, kekerasan, shape memory effect,Shape Memory Alloy, Cu-Al-Mn, cooling media, up-quenching, microstrucure, mechanical properties, shape memory effect |
| Subjects: | Q Science Q Science > Q Science (General) T Technology > TN Mining engineering. Metallurgy > TN690 Metallography. Physical metallurgy T Technology > TN Mining engineering. Metallurgy > TN693.M3 Magnesium |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | Yunia Sa’adah |
| Date Deposited: | 10 Feb 2023 06:38 |
| Last Modified: | 10 Feb 2023 06:38 |
| URI: | http://repository.its.ac.id/id/eprint/96747 |
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