Affiliation:
1. Manado State University
2. Universitas Negeri Manado
Abstract
Aim of this study is to investigate the effect of tempering with various heating temperatures (200, 300 and 450°C) and time (2, 4 and 6 hours) on toughness and microstructure of high carbon steel in order to improve its properties. The toughness was measured using the Charpy test and the changes of microstructures were evaluated by Optical Microscope. The analysis was performed for specimens before and after tempering. The results showed the energy of impact and the impact number (toughness) of high carbon steel JIS G4401 were increased by rising tempering temperature. Besides, by addition of the time of tempering, the energy of impact and the toughness were also enlarged. The microstructures of specimens after tempering consisted of ferrite and pearlite phases where the pearlite phase appeared more dominantly during increasing temperature and time of aging.
Publisher
Trans Tech Publications Ltd
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