Ginting, Emaia Sugitha Br. (2023) Pengaruh Waktu Kalsinasi terhadap Struktur Kristal dan Kekerasan pada Paduan Ingat Bentuk Cu0,83al0,14zn0,03 dengan Metode Metalurgi Serbuk. S1 thesis, Universitas Kristen Indonesia.
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Abstract
Studi ini bertujuan untuk menggunakan Teknologi Metalurgi Serbuk dalam produksi paduan ingat bentuk yang terdiri dari matriks logam Cu0,83Al0,14Zn0,03. Proses ini melibatkan kompaksi serbuk menggunakan tekanan 10 Metric Ton dan sintering pada suhu tertentu. Metode eksperimen dengan desain "one-shot case study" digunakan, di mana variasi temperatur sintering diamati terhadap struktur kristal, densitas, dan porositas paduan Cu0,83Al0,14Zn0,03. Setelah proses quenching dengan oli, kekerasan material mengalami penurunan dari 60 HB menjadi 47,3 HB, tetapi kembali tidak signifikan setelah proses aging. Ukuran kristal mengecil setelah proses Aging selama 60 menit yakni 0,751 (nm) ke 0,563 (nm). Nilai kerapatan dislokasi meningkat setelah proses aging yaitu dari 2,238 (garis/mm²) ke 5,929 (garis/mm²), begitu juga dengan kenaikan regangan mikro setelah proses tempering selama 60 menit yaitu dari 0,1166 (ε) ke 0,1724 (ε). Penelitian selanjutnya disarankan untuk menggunakan variasi media quenching yang berbeda, temperatur hardening dan tempering yang lebih tinggi, serta waktu penahanan yang lebih lama untuk memperoleh informasi yang lebih akurat mengenai perubahan struktur kristal, kerapatan dislokasi, dan regangan mikro. / This study aims to utilize Powder Metallurgy Technology in the production of shape memory alloys consisting of a Cu0,83Al0,14Zn0,03 metal matrix. The process involves powder compaction using a pressure of 10 metric tons and sintering at a specific temperature. An experimental method with a "one-shot case study" design was employed, where variations in sintering temperature were observed in relation to the crystal structure and hardness of the Cu0,83Al0,14Zn0,03 shape memory alloy. After quenching with oil, the material hardness decreased from 60 HB to 47.3 HB, but there was no significant change after the aging process. The crystal size decreased after a 60-minute aging process, from 0.751 (nm) to 0.563 (nm). The dislocation density increased after aging, from 2.238 (lines/mm²) to 5.929 (lines/mm²), as did the microstrain increase after a 60-minute tempering process, from 0.1166 (ε) to 0.1724 (ε). Further research is recommended to explore different quenching media, higher hardening and tempering temperatures, and longer holding times to obtain more accurate information about changes in crystal structure, dislocation density, and microstrain.
Item Type: | Thesis (S1) | ||||||||||||
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Additional Information: | Nomor Panggil : T.A 621.381 52 Gin p 2023 | ||||||||||||
Subjects: | TECHNOLOGY > Mechanical engineering and machinery | ||||||||||||
Divisions: | FAKULTAS TEKNIK > Teknik Mesin | ||||||||||||
Depositing User: | Users 3451 not found. | ||||||||||||
Date Deposited: | 24 Aug 2023 08:34 | ||||||||||||
Last Modified: | 11 Dec 2023 02:39 | ||||||||||||
URI: | http://repository.uki.ac.id/id/eprint/12113 |
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