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

International Conference on Materials, Processing and Product Engineering 2015

Vieweg, A.^1 ; Ressel, G.^1 ; Prevedel, P.^1 ; Raninger, P.^1 ; Panzenböck, M.^2 ; Marsoner, S.^1 ; Ebner, R.^1

Materials Center Leoben Forschung GmbH, Roseggerstraße 12, Leoben

A-8700, Austria^1

Department of Physical Metallurgy and Materials Testing, Montanuniversität Leoben, Franz Josef Straße 18, Leoben

A-8700, Austria^2

关键词: Austenitizing temperature;    Conventional furnace;    Frequency generators;    Heat treatment process;    Induction hardening;    Microstructure and mechanical properties;    Microstructures and mechanical properties;    Quenching and tempering;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/119/1/012019/pdf
DOI  :  10.1088/1757-899X/119/1/012019

来源: IOP

【 摘 要 】

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.