Determination of the Material Data for the Simulation of Through Hardening of Components made of 100Cr6 Part 2: Parameters for the Transformation Behavior - Evaluation of the Data Set based on the Component Tests - Discussion - Summary and Outlook

The Collaborative Research Centre 570 "Distortion Engineering - Distortion Control in the Production Process" focuses on the determination of significant factors and interactions in the overall production process of selected components to identify relevant distortion mechanisms. In this context, computer simulations are more and more important for an answer of distortion problems. With these simulations the temporal and local process development in the component can be analyzed to conclude the significant procedures which control distortion. A high class data set is an essential basic requirement for the simulation. In the present paper the proceeding and the challenge of preparation of a data set for the ball bearing steel 100Cr6 (SAE 52100) are reported. As a restrictive condition, this data set is only valid for a completely through hardened component after a defined austenitizing procedure. In addition to the thermo physical and thermo mechanical values, the parameters of the martensitic transformation are specified. The quality of the presented data set is discussed by the comparison of calculated and experimental results concerning size and shape changes as well as residual stresses of ball bearing rings after a martensitic hardening.