Formation of high-carbon abrasion-resistant surface layers when high-energy heating by high-frequency currents

International Conference and Youth Scientific School on "Materials and Technologies of New Generations in Modern Materials Science"

Plotnikova, N.V.^1 ; Skeeba, V Yu^1 ; Martyushev, N.V.^2 ; Miller, R.A.^1 ; Rubtsova, N.S.^1

Faculty of Mechanical Engineering and Technologies, Novosibirsk State Technical University, 20 Prospekt K. Marksa, Novosibirsk

630073, Russia^1

Department of Materials Science and Technology of Materials, Tomsk Polytechnic University, Lenina Av. 30, Tomsk

634050, Russia^2

关键词: Abrasion resistant;    Computational model;    High carbons;    High-frequency current;    Power densities;    Scanning microscopy;    Structure formations;    Surface layers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/156/1/012022/pdf
DOI  :  10.1088/1757-899X/156/1/012022

来源: IOP

【 摘 要 】

The paper shows the possibility of carburization of low-carbon steel surface layers using high-frequency currents. The mathematical modeling of carburization using high-energy heating by high-frequency currents (HEH HFC) has been carried out, the temperature fields formed during the given processing have been calculated, as well as the structural changes in the surface layers have been simulated. The features of the structure formation in the surface layers of low-carbon steel after carburizing via HEH HFC have been determined by optical and scanning microscopy, which is confirmed by the computational models. The rational mode of fusion via HEH HFC has also been determined (power density of the source qs= (1.5 ... 4.0) • 108W m-2, (the relative travel speed of parts Vp= 5 ... 100 mm / sec), with forming the compressive retained stresses in the surface layer (σRS≈ -300 ... -400 MPa).