HARDENING BAJA AISI-4120 DENGAN VARIASI HOLDING TIME
نویسندگان
چکیده
Hardening pada baja AISI-4120 dilakukan dengan tahapan berupa pemanasan sampai temperatur tertentu, holding time konstan beberapa saat, dan pendinginan menggunakan media cair agar terjadi penurunan secara cepat. Pada penelitian ini variasi yang adalah time, yaitu selama 10 menit, 20 30 menit. Uji uji kekerasan struktur mikro. Temperatur tungku pemanas 8500C, pendingin air, pengujian Vickers, mikro mikroskop optik metalografi perbesaran 1000X. Hasil menunjukkan nilai paling tinggi terdapat benda menit sebesar 623 HVN. Untuk hasil mikrostruktur martensit bainit, persentase waktu penahanan 97%. Semakin lama maka terbentuk akan semakin meningkat.
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ژورنال
عنوان ژورنال: Machine
سال: 2022
ISSN: ['2581-0138', '2502-2040']
DOI: https://doi.org/10.33019/jm.v8i1.2235