Induction hardening: Differences to a conventional heat treatment process and optimization of its parameters

The possibility of obtaining similar mechanical properties with faster heating processes than the conventional ones has been of interest for several years. In the present study, investigations were performed in terms of the influences of such fast heat-treatments on the microstructure and mechanical...

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Bibliographic Details
Published in:IOP conference series. Materials Science and Engineering 2016-03, Vol.119 (1), p.12019-12026
Main Authors: Vieweg, A, Ressel, G, Prevedel, P, Raninger, P, Panzenböck, M, Marsoner, S, Ebner, R
Format: Article
Language:English
Subjects:
Austenitizing
Frequency generators
Furnaces
Heat treating
Heat treatment
Induction hardening
Mechanical properties
Microstructure
Oil quenching
Optimization
Quenching and tempering
Structural steels
Workpieces
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Summary:The possibility of obtaining similar mechanical properties with faster heating processes than the conventional ones has been of interest for several years. In the present study, investigations were performed in terms of the influences of such fast heat-treatments on the microstructure and mechanical properties of the material. This investigation compares an inductive with a conventional furnace heat treating process of a 50CrMo4 steel, however only the austenitizing treatment was changed and subsequent quenching and tempering was done in the same way. To this end experiments with a middle frequency generator, using different heating rates and austenitizing temperatures, were conducted and followed by oil quenching of the workpieces. The resulting structures were characterized regarding their microstructures and mechanical properties in order to gather a better understanding of the differences between the inductive and the conventional heat treating process. As a main result it was found, that the fast austenitized samples exhibited worse ductility than the conventional treated material.
ISSN:1757-8981
1757-899X
DOI:10.1088/1757-899X/119/1/012019