Herdiansyah, Muhammad Farhan (2022) Analisis Pengaruh Jenis Media Up-Quenching Dan Variasi Holding Time Artificial Aging Pada Paduan Cu-14,6Zn-7,41Al Shape Memory Alloy Terhadap Struktur Mikro, Kekerasan Dan Shape Memory Effect. Other thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Shape memory alloys umum diaplikasikan pada sektor industri otomotif dan dirgantara. Penggunaan paduan Cu-Zn-Al menjadi alternatf dari paduan Ni-Ti yang sudah digunakan secara komersil karena memiliki beberapa kekurangan. Paduan Cu-14,6Zn-7,41Al digunakan pada penelitian ini untuk dianalisa pengaruh jenis media up-quenching dan holding time artificial aging terhadap struktur mikro, kekerasan dan shape memory effect. Selanjutnya dilakukan pengujian OES, XRD, metalografi, kekerasan, DSC dan SME. Struktur mikro spesimen up-quenching media oli tidak terdapat fasa α, sementara media air terdapat fasa α. Selanjutnya pada spesimen artificial aging diduga terdapat presipitat di sekitar fasa β dan β’. Kekerasan spesimen up-quenching media oli lebih tinggi dibandingkan dengan media air dengan nilai 220 ± 1 HV. Peningkatan terjadi seiring dengan penambahan holding time artificial aging dengan nilai tertinggi sebesar 326,333 ± 1,528 HV. Selanjutnya, shape memory effect terdapat pada semua spesimen tetapi titik optimumnya terdapat pada spesimen up-quenching oli dengan presentase tertinggi sebesar 90% dan terendah sebesar 25% pada media air yang dilakukan aging selama 95 menit.
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Shape memory alloys are commonly used in the automotive and aerospace industries. The use of Cu-Zn-Al alloys is an alternative to Ni-Ti alloys which have been used commercially because they have several drawbacks. Alloy Cu-14,6Zn-7,41 was used in this study to analyze the effect of variations in media up-quenching and holding time of artificial aging on microstructure, hardness and shape memory effect. Then, OES, XRD, metallography, hardness, DSC and SME tests were carried out. The microstructure of the oil up-quenching media specimen did not contain α phase. Furthermore, in artificial aging specimens, it is suspected that there are precipitates around the β and β' phase. The hardness of the oil up-quenching media specimen was harder than that of water media with a value of 220 ± 1 HV. The increase occurred along with the addition of artificial aging time with the highest value of 326,333 ± 1,528 HV. Furthermore, the shape memory effect was found in all specimens but the optimum point was found in the up-quenching oil specimen with a percentage of 90% and the lowest percentage of 25% in water media which was aged for 95 minutes.
| Item Type: | Thesis (Other) |
|---|---|
| Uncontrolled Keywords: | Artificial Aging, Cu-Zn-Al, Shape Memory Alloys, Shape Memory Effect, Up-Quenching, Artificial Aging |
| Subjects: | T Technology > TS Manufactures > TS205 Metals--Heat treatment. |
| Divisions: | Faculty of Industrial Technology and Systems Engineering (INDSYS) > Material & Metallurgical Engineering > 28201-(S1) Undergraduate Thesis |
| Depositing User: | farhan herdians |
| Date Deposited: | 06 Feb 2022 04:22 |
| Last Modified: | 04 Jul 2024 08:15 |
| URI: | http://repository.its.ac.id/id/eprint/92843 |
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