Simulation of Stress and Strain for Induction-Hardening Applications

Abstract

The possibility to manage stress and strain in hardened parts might be beneficial for a number of inductionhardening applications. The most important of these benefits are the improvement of fatigue strength, avoidance of cracks, and minimization of distortion. An appropriate and powerful way to take the stress and strain into account during the development of a process is to make use of computer simulations. In-house developed and commercial software packages have been coupled to incorporate the electromagnetic task into the calculations. The simulations have been performed followed by analysis of the results. The influences of two different values of quenching intensity, strength of initial material structure, strength of austenite, surface power density-frequency-time combination, and workpiece diameter on the residual stress are studied. The influence of quenching intensity is confirmed by the series of experiments representing the external hardening of a cylinder with eight variations of quenching intensity. Measured by x-rays, the values of surface tangential stress are used as a dataset for verification of the model being used for analyses.

Research on the Bending Fatigue Property of Quenched Crankshaft Based on the Multi-Physics Coupling Numerical Simulation Approaches and the KBM Model

“…Dietmar applied the adaptive finite element analysis approach in simulating the electromagnetic induction quenching of the gear and got accuracy in the temperature and hardening curve [25]. Dmitry carried out the technological parameter influence analysis of this approach and proposed a corresponding model to accurately simulate the process [26]. Akram proposed the novel alternate magnetic field treatments in EN8 steel and discovered that this approach could improve the wear resistance and reduce the coefficient of friction of the material, which could be explained by the increase of the compressive residual stress and the microhardness.…”

A novel investigation into the edge effect reduction of 4340 steel disc through induction hardening process using magnetic flux concentrators

“…Estimation of stress and distortion during the induction case hardening tube was performed by Nemkov et al [32], and another experimental approach has been done to investigate the numerical modeling of the induction process [33]. To improve fatigue strength and avoid cracks in stress and strain during induction hardening, numerical simulations were performed by Ivanov et al [34]. The effects of initial microstructure of 4140 steel on the fatigue behavior after induction hardening was also explored [35], and multiple investigations applied nite element analysis (FEA) to determine effective process parameters and to nd ways for microstructural enhancement of the nal induction-hardened product [36][37][38].…”

Numerical Fatigue Analysis of Induction-Hardened and Mechanically Post-Treated Steel Components

“…However, the fatigue resistance of IH parts significantly depends on the applied process parameters, as they fundamentally impact the resulting local material properties [7][8][9]. To evaluate these local characteristics, numerous studies have validated the applicability of numerical analysis techniques to simulate the IH process [10][11][12][13][14][15]. In order to enhance the fatigue strength further, a previous study [16] proposed that a superimposed mechanical treatment, denoted as stroke peening (StrP), of the IH surface layer is capable of elevating the local fatigue resistance.…”