| Issue |
MATEC Web Conf.
Volume 349, 2021
6th International Conference of Engineering Against Failure (ICEAF-VI 2021)
|
|
|---|---|---|
| Article Number | 02006 | |
| Number of page(s) | 8 | |
| Section | Metallic Materials: Characterization, Mechanical Behavior and Modeling, Detection of Metal Failures | |
| DOI | https://doi.org/10.1051/matecconf/202134902006 | |
| Published online | 15 November 2021 | |
Investigation of hardness behavior after carburizing and hardening of 15CrNi6 steel
1 Department of Mechanical Engineering, University of West Attica, 250 Thivon & Petrou Ralli Ave. 12244 Egaleo, Greece
2 Department of Electrical and Electronics Engineering, University of West Attica, 250 Thivon & Petrou Ralli Ave. 12244 Egaleo, Greece
DIN 15CrNi6 is the most representative grade of the case-hardened steels. The present work analyses the influence of carburizing time on hardness of the specific steel. Specimens with similar chemical composition were heated at 900°C in liquid carbonaceous media for one, two, three and four hours, correspondingly. Then samples were oil quenched and tempered at 180°C for two hours. Microhardness was measured across the carburized zone and case profiles were acquired. The effective case depth was determined as function of carburizing holding time. Core macro hardness was carried out and the impact of holding time on the substrate hardness was discussed. The optimum case depth was defined and the carburizing parameters determined. The hardness control is critical in case hardening practice and results provide practical information to heat treaters, useful both to control the treatment parameters and to minimize the risk of failure.
© The Authors, published by EDP Sciences, 2021
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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