eprintid: 59761
rev_number: 23
eprint_status: archive
userid: 24812
dir: disk0/00/05/97/61
datestamp: 2026-04-15 06:33:43
lastmod: 2026-04-15 06:33:43
status_changed: 2026-04-15 06:33:43
type: thesis
metadata_visibility: show
contact_email: evanacintya3@gmail.com
creators_name: Fi’al, Evana Cintya Hasanatul
creators_id: 3334210033
contributors_type: http://www.loc.gov/loc.terms/relators/THS
contributors_name: Hasanah, Indah Uswatun
contributors_name: Alfirano, .
contributors_id: 199012142019032022
contributors_id: 197406292003121001
corp_creators: Universitas Sultan Ageng Tirtayasa
corp_creators: Fakultas Teknik
corp_creators: Jurusan Teknik Metalurgi
title: ANALISIS PENGARUH WAKTU PENAHANAN CRYOGENIC 
TREATMENT DAN TEMPERATUR TEMPERING 
TERHADAP SIFAT MEKANIK BAJA AISI D2
ispublished: pub
subjects: TN
subjects: TS
divisions: Metalurgi
full_text_status: public
keywords: cold work tool steels, baja AISI D2, cryogenic treatment, struktur mikro, sifat mekanik.
note: Cold work tool steels merupakan baja perkakas yang digunakan sebagai dies 
karena memiliki kombinasi sifat mekanik berupa kekerasan, ketahanan aus, dan 
ketangguhan yang baik. Salah satu aplikasinya adalah trimming dies, yaitu alat 
untuk memotong sisa material setelah proses forging, casting, atau sheet metal 
forming. Namun, trimming dies umumnya memiliki umur pakai yang relatif pendek 
(short life), sehingga diperlukan pengembangan material dan proses perlakuan 
panas untuk meningkatkan umur pakainya (long life). Salah satu material yang 
berpotensi digunakan adalah baja AISI D2, karena memiliki kekerasan dan 
ketahanan aus tinggi serta ketangguhan sedang. Upaya peningkatan sifat mekanik 
dapat dilakukan melalui conventional heat treatment (CHT) dan cryogenic 
treatment guna memaksimalkan transformasi martensite. Penelitian ini bertujuan 
untuk menganalisis pengaruh variasi holding time cryogenic treatment dan 
temperatur tempering terhadap sifat mekanik baja AISI D2. Proses perlakuan panas 
diawali dengan austenitizing pada suhu 950 °C selama 45 menit, dilanjutkan 
quenching menggunakan gas N₂ dengan tekanan 2,5 bar. Selanjutnya dilakukan 
cryogenic treatment pada suhu −70 °C dengan variasi holding time selama 20, 40, 
dan 60 menit, kemudian tempering dengan variasi temperatur 320, 420, dan 520 °C 
selama 30 menit. Pengujian yang dilakukan meliputi metalografi, kekerasan, impak, 
dan keausan. Hasil penelitian menunjukkan bahwa struktur mikro yang terbentuk 
berupa plate tempered martensite yang disertai alloy carbides. Peningkatan holding 
time cryogenic treatment dan temperatur tempering menghasilkan jumlah plate 
tempered martensite yang lebih banyak serta memicu presipitasi alloy carbides 
selama proses tempering. Selain itu, peningkatan temperatur tempering juga 
meningkatkan stabilitas struktur plate tempered martensite dan alloy carbides. 
Variasi holding time cryogenic treatment dan temperatur tempering memberikan 
pengaruh signifikan terhadap kombinasi sifat mekanik baja AISI D2. Dengan 
demikian, kondisi perlakuan panas yang optimal dapat ditentukan untuk 
meningkatkan performa trimming dies sehingga memiliki umur pakai yang lebih 
panjang.
abstract: Cold work tool steels merupakan baja perkakas yang digunakan sebagai dies 
karena memiliki kombinasi sifat mekanik berupa kekerasan, ketahanan aus, dan 
ketangguhan yang baik. Salah satu aplikasinya adalah trimming dies, yaitu alat 
untuk memotong sisa material setelah proses forging, casting, atau sheet metal 
forming. Namun, trimming dies umumnya memiliki umur pakai yang relatif pendek 
(short life), sehingga diperlukan pengembangan material dan proses perlakuan 
panas untuk meningkatkan umur pakainya (long life). Salah satu material yang 
berpotensi digunakan adalah baja AISI D2, karena memiliki kekerasan dan 
ketahanan aus tinggi serta ketangguhan sedang. Upaya peningkatan sifat mekanik 
dapat dilakukan melalui conventional heat treatment (CHT) dan cryogenic 
treatment guna memaksimalkan transformasi martensite. Penelitian ini bertujuan 
untuk menganalisis pengaruh variasi holding time cryogenic treatment dan 
temperatur tempering terhadap sifat mekanik baja AISI D2. Proses perlakuan panas 
diawali dengan austenitizing pada suhu 950 °C selama 45 menit, dilanjutkan 
quenching menggunakan gas N₂ dengan tekanan 2,5 bar. Selanjutnya dilakukan 
cryogenic treatment pada suhu −70 °C dengan variasi holding time selama 20, 40, 
dan 60 menit, kemudian tempering dengan variasi temperatur 320, 420, dan 520 °C 
selama 30 menit. Pengujian yang dilakukan meliputi metalografi, kekerasan, impak, 
dan keausan. Hasil penelitian menunjukkan bahwa struktur mikro yang terbentuk 
berupa plate tempered martensite yang disertai alloy carbides. Peningkatan holding 
time cryogenic treatment dan temperatur tempering menghasilkan jumlah plate 
tempered martensite yang lebih banyak serta memicu presipitasi alloy carbides 
selama proses tempering. Selain itu, peningkatan temperatur tempering juga 
meningkatkan stabilitas struktur plate tempered martensite dan alloy carbides. 
Variasi holding time cryogenic treatment dan temperatur tempering memberikan 
pengaruh signifikan terhadap kombinasi sifat mekanik baja AISI D2. Dengan 
demikian, kondisi perlakuan panas yang optimal dapat ditentukan untuk 
meningkatkan performa trimming dies sehingga memiliki umur pakai yang lebih 
panjang.
date: 2026-01-13
date_type: published
pages: 147
institution: Fakultas Teknik Universitas Sultan Ageng Tirtayasa
department: Teknik Metalurgi
thesis_type: sarjana
thesis_name: sarjana
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citation:   Fi’al, Evana Cintya Hasanatul  (2026) ANALISIS PENGARUH WAKTU PENAHANAN CRYOGENIC TREATMENT DAN TEMPERATUR TEMPERING TERHADAP SIFAT MEKANIK BAJA AISI D2.  S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.   
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