SinoXivDifferential hot stamping of USIBOR® 1500 steel: Effect of partial tool heating on phase transformation, hardness and springback
Abstract
This study investigates the thermo-mechanical response of USIBOR® 1500 steel subjected to differential hot stamping using partial tool heating. Real-time temperature measurements, cooling rate analysis, microhardness mapping, and optical microscopy were employed to establish process–structure–property relationships under non-isothermal conditions. Increasing tool temperature (100–300°C) reduces local cooling rates in the heated regions, promoting a transition from predominantly martensitic to mixed martensitic–bainitic and bainitic-dominated microstructures. This transition is accompanied by a decrease in hardness from approximately 470 HV0.2 to 326 HV0.2. Partial tool heating also affects springback behavior, inducing a mensurable shift toward negative springback due to asymmetric thermal contraction and phase transformation-induced strains. The results demonstrate that partial tool heating provides an effective and controllable strategy for tailoring local mechanical properties and springback response in press-hardened steel components.
Keywords
Citation Information
@article{camilapereiralisboa2026,
title={Differential hot stamping of USIBOR® 1500 steel: Effect of partial tool heating on phase transformation, hardness and springback},
author={Camila Pereira Lisboa and Richard Thomas Lermen and RAFAEL LUCIANO DALCIN and Marco Antonio Colosio and Luana de Lucca de Costa and André Rosiak and Juliano Boeira Ercolani and Renan da Silva Ramalho and Lirio Schaeffer},
journal={The International Journal of Advanced Manufacturing Technology},
year={2026},
doi={https://doi.org/10.21203/rs.3.rs-9322674/v1}
}
