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All Journal Jurnal Teknik ITS IPTEK The Journal of Engineering Martabe : Jurnal Pengabdian Kepada Masyarakat Journal of Applied Sciences, Management and Engineering Technology (JASMET) Jurnal Kedaymas Sewagati
Mavindra Ramadhani
Departemen Teknik Material Dan Metalurgi Institut Teknologi Sepuluh Nopember Surabaya
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Journal : IPTEK The Journal of Engineering

 1 
Effect of Holding Time and Cooling Medium on Microstructure and Hardness of AISI 8655 in Hardening Process Alvian Toto Wibisono; Mavindra Ramadhani; Rochman Rochiem
IPTEK The Journal of Engineering Vol 4, No 3 (2018)
Publisher : Lembaga Penelitian dan Pengabdian kepada Masyarakat

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j23378557.v4i3.a4280

Abstract

The microstructure transformation of AISI 8655, affecting to hardness and impact properties in various hardening processes, has been investigated in this work. AISI 8655 specimens which had been prepared before hardening processes were heated to austenite temperature and held for 30 minutes and 60 minutes then continued by rapid cooling in various medium (air, oil and water). The hardened steel specimens were tested by optical microscope to observe microstructure, brinell test and impact test respectively to measure hardness and impact strength properties. Martensite and bainite were microstructures that appeared after hardening processes. The holding time for 30 minutes gave higher hardness properties than the holding time for 60 minutes. However, the holding time for 60 minutes performed higher impact strength than that for 30 minutes. The highest of hardness was performed by the specimen cooled in water medium at 552 BHN and the highest of impact strength was performed by the specimen cooled in air medium at 7.2 J/mm2.
Co-Authors Alvian Toto Wibisono Diah Susanti Dian Mughni Felicia Eartha Annafi Rasjiddin Fakhreza Abdul Farid Miftahul Anwar Haniffudin Nurdiansyah Haniffudin Nurdiansyah Haniffudin Nurdiansyah Jatimurti, Wikan Luckyta Rizkivany M Arfani Mas Irfan Purbawanto Hidayat Muhammad Irsyad Zain Muhammad Puri Yogatama Rizki Rizki Rochman Rochiem Rochman Rochiem Rohmannudin, Tubagus Noor Sulistijono Sulistijono Sungging Pintowantoro Tubagus Noor Rohmanuddin Vira Yudha Tama Yuli Setiyorini