The influence of quenching media on different properties of C45 carbon steel
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Date
2023
Authors
Stamenković, Uroš
Marković, Ivana
Mladenović, Srba
Marjanović, Saša
Kovačević, Avram
Mitrović, Milijana
Basarabić, Filip
Journal Title
Journal ISSN
Volume Title
Publisher
University of Belgrade, Technical Faculty in Bor
Source
Proceedings - 54th International October Conference on Mining and Metallurgy - IOC 2023, 18-21 October 2023, Bor Lake, Serbia, 2023, 407-413
Volume
Issue
Abstract
The subject of this paper was the investigation of the influence of different quenching media on the mechanical, thermal, and structural properties of C45 medium carbon steel. After normalization heat treatment, steel samples were austenitized at 880°C for 50 minutes. Austenitization was followed by quenching in different quenching media: pure water and different aqueous solutions (2–8%) of NaOH. After each heat treatment, hardness and thermal properties were determined, along with structural investigations using the optical microscope. After normalization, samples had the lowest hardness values, while thermal conductivity was the highest compared to the other tested samples. Metallographic analysis showed that the structure consists of fine-grained ferrite and perlite. Quenching in water and aqueous solutions, the values of hardness increased significantly, while the values of thermal properties decreased. Samples quenched in aqueous solutions exhibit extreme hardness. Metallographic analysis of the samples after quenching revealed fine needles of martensite.
Description
Keywords
quenching, aqueous salt solutions, hardness, thermal conductivity
Citation
DOI
Scopus
ISSN
ISBN
978-86-6305-140-9
License
CC-BY-NC-ND