eprintid: 59380 rev_number: 17 eprint_status: archive userid: 21347 dir: disk0/00/05/93/80 datestamp: 2026-03-31 08:53:33 lastmod: 2026-03-31 08:53:33 status_changed: 2026-03-31 08:53:33 type: thesis metadata_visibility: show contact_email: sultanshafwank@gmail.com creators_name: KURNIAWAN, MUHAMMAD SULTAN SHAFWAN creators_id: 3334210069 contributors_type: http://www.loc.gov/loc.terms/relators/THS contributors_type: http://www.loc.gov/loc.terms/relators/THS contributors_name: Hasanah, Indah Uswatun contributors_name: Alfirano, Alfirano contributors_id: 199012142019032022 contributors_id: 197406292003121001 corp_creators: Fakultas Teknik Universitas Sultan Ageng Tirtayasa title: Pengaruh Cryogenic Treatment pada Baja AISI D2 dengan Variasi Temperatur Austenisasi dan Holding Time Cryogenic Treatment untuk Aplikasi Thread Rolling Dies ispublished: pub subjects: TN subjects: TS divisions: Metalurgi full_text_status: restricted keywords: Cold Work Tool Steels, Baja AISI D2, Cryogenic Treatment, Sifat Mekanik, Thread Rolling Dies. abstract: Cold work tool steels banyak digunakan dalam industri dies, karena merupakan baja perkakas yang mempunyai sifat mekanik yang baik. Salah satu aplikasi yang membutuhkan sifat mekanik tersebut adalah thread rolling dies, yaitu dies yang dapat digunakan untuk membuat ulir pada baut. Thread rolling dies mempunyai prinsip kerja yaitu dengan mengikis material sampai terbentuk ulir, hal ini mengakibatkan thread rolling dies perlu mempunyai sifat mekanik yang baik dan umur pakai (wear rate) yang panjang agar dapat selalu menciptakan ulir yang presisi. Pengembangan material dan proses perlakuan panas sangat dibutuhkan untuk mencapai umur pakai (wear rate), salah satu material yang cocok adalah baja AISI D2. Hal tersebut dikarenakan baja AISI D2 memiliki kandungan paduan carbon dan chromium yang tinggi, sehingga dapat menghasilkan sifat mekanik kekerasan dan ketahanan aus yang tinggi dan ketangguhan sedang. Metode yang dapat dilakukan adalah conventional heat treatment (CHT) dan cryogenic treatment. Penelitian ini bertujuan untuk mengetahui pengaruh variasi temperatur austenitizing dan waktu tahan cryogenic treatment terhadap sifat mekanik baja AISI D2. Perlakuan diawali dengan variasi temperatur austenitizing pada 950 °C, 1000 °C, dan 1050 °C selama 45 menit, proses selanjutnya dilanjutkan dengan quenching menggunakan gas N₂ tekanan 2,5 bar, kemudian diberikan perlakuan cryogenic treatment pada −70 °C dengan variasi holding time 20, 40, dan 60 menit, dan tempering dengan temperatur 520 °C selama 30 menit. Pengujian meliputi metalografi, uji kekerasan, uji impak, dan uji keausan. Hasil penelitian menunjukkan bahwa struktur mikro yang terbentuk berupa plate tempered martensite yang disertai karbida, yaitu large secondary carbides (LSC) dan small secondary carbides (SSC). Variasi holding time cryogenic treatment dan temperatur austenisasi menunjukkan pengaruh terhadap transformasi fasa dan stabilisasi fasa yang terbentuk pada baja AISI D2 dengan perlakuan tambahan yaitu cryogenic treatment. Kata Kunci: Cold Work Tool Steels, Baja AISI D2, Cryogenic Treatment, Sifat Mekanik, Thread Rolling Dies date: 2026 date_type: published pages: 135 institution: Fakultas Teknik Universitas Sultan Ageng Tirtayasa department: Teknik Metalurgi thesis_type: sarjana thesis_name: sarjana referencetext: [1] H. and T. W. B. Riyadi, "Effect of Hardening and Tempering on the Microstructure and Mechanical Properties of the Tapered-Forged Leaf Spring Steel," Material Sains Forum, vol. 1029, pp. 25-32, 2021. [2] V. Bothare, "Strait Research," December 2024. [Online]. Available: https://straitsresearch.com/report/tool-steel-market. [Accessed 6 Mei 2025]. [3] D. Gandy, Carbon Steel Handbook, Electric Power Research Institute, 2007. [4] M. I. Setiyaji, C. Pramono and N. 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Alhamidi, "The influence of treatment on cold work tool steel SKD 11 with temperature variations on mechanical properties," TEKNIKA: JURNAL SAINS DAN TEKNOLOGI, p. 36–42, 2023. [50] V. M. Alcantara, "Cryogenic Treatment of Steel: AISI D2 and D6," Effect on Hardness, Wear, and Microstructure, pp. 56-59, 2018. [51] V. M. Alcántara, "Cryogenic Treatment s Applied to AISI D2 Steel: Effects on Wear, Hardness and Microstructure," The International Journal of Engineering and Science (IJES), pp. 15-24, 2023. citation: KURNIAWAN, MUHAMMAD SULTAN SHAFWAN (2026) Pengaruh Cryogenic Treatment pada Baja AISI D2 dengan Variasi Temperatur Austenisasi dan Holding Time Cryogenic Treatment untuk Aplikasi Thread Rolling Dies. 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