Abstract
The hot-press forming of a U-channel was conducted on a boron-steel blank. The die consisted of two separate parts in order to perform the partial quenching process. The cold die was initially at 25 °C while the heated die was set to five different temperatures, namely, 25, 120, 220, 320 and 400 °C. The cooling temperature history, Vickers hardness and springback of the channel were measured. A thermo-mechanical-metallurgical model, which accounts for the prior austenite deformation effect, was successfully implemented in the LS-DYNA explicit solver to simulate the hot-press forming process under partial quenching conditions. The predicted and experimental results were compared and found in reasonable agreement.
Highlights
The hot-press forming (HPF) process has drawn considerable attention in the automobile industry in order to produce ultra high-strength automotive components
A thermo-mechanical-metallurgical model, which accounts for the prior austenite deformation effect, was successfully implemented in the LS-DYNA explicit solver to simulate the hot-press forming process under partial quenching conditions
First of all, it is important to capture the temperature history in the blank because it is directly connected to the phase transformation, which mainly affects the mechanical property of the products
Summary
The hot-press forming (HPF) process has drawn considerable attention in the automobile industry in order to produce ultra high-strength automotive components. This technology significantly contributes to lower the car weight, reduce gas emission and improve fuel efficiency. A full martensitic microstructure in the final product increases the strength, limited ductility results in lower crash performance. For this reason, the partial quenching method focuses to secure both the structural strength and ductility as in-service properties by tailoring the microstructure in press-hardened products. The purpose of this work is to simulate HPF and partial quenching of a 22MnB5 steel sheet sample
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
