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PENGARUH VARIASI WAKTU TAHAN (HOLDING TIME) TERHADAP STRUKTUR MIKRO DAN KEKERASAN (VICKERS) PADA BAJA ST 60

Wiyono, Kukuh (2018) PENGARUH VARIASI WAKTU TAHAN (HOLDING TIME) TERHADAP STRUKTUR MIKRO DAN KEKERASAN (VICKERS) PADA BAJA ST 60. Undergraduate (S1) thesis, University of Muhammadiyah Malang.

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Abstract

This research aims to know the influence of holding time variation against the steel hardness, that is starting with the process of heat treatment and custody of her time at the moment has reached the desired temperature. Then conducted testing to know microstructure and the value of violence. The materials used in this research are steel ST 60 which is a medium-carbon steel. The process of holding time using a variation of the time of 15 minutes, 20 minutes, 25 minutes at a temperature of 800 ° and SEM as well as micro photo done testing vickers.The results of the research show that the variation of the holding time very influential towards the kekeran steel ST 60 from 1197.89 kg/mm ² in a 15-minute, 1299.46 kg/mm ² time 20 minutes, and 1358.24 kg/mm ² time 25 minutes. Microstructure formed either a ferrit, perit, and martensit. Perlit structure grown bigger in time holding time longer.

Item Type: Thesis (Undergraduate (S1))
Student ID: 201310120311150
Keywords: Medium-carbon steel, holding time, heat treatment, hardness, microstructure.
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Faculty of Engineering > Department of Mechanical Engineering (21201)
Depositing User: Sulistyaningsih Sulistyaningsih
Date Deposited: 01 Nov 2018 07:49
Last Modified: 01 Nov 2018 07:49
URI : http://eprints.umm.ac.id/id/eprint/39085

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