Comparison between two tailored press hardening technologies by means of physical and numerical simulation

Comparison between two tailored press hardening technologies by means of physical and numerical simulation

Maria Emanuela Palmieri, Luigi Tricarico

download PDF

Abstract. Tailored Tool Tempering (TTT) and Intermediate Pre-Cooling techniques are two tailored press hardening technologies studied for automotive applications to obtain structural components with good energy absorption characteristics and high strength. The aim of this work is the comparison between these two tailored technologies in terms of mechanical properties on the part. An automotive B-Pillar in 22MnB5 steel was considered as case study. Two Finite Element (FE) models were developed for simulating both technologies. FE thermal cycles were experimentally reproduced on specimens using a Gleeble physical simulator. After physical simulation, metallographic, tensile and hardness tests were carried out to evaluate the mechanical properties. Optimal values of process parameters that guarantee ductile and resistant zones on the same component were detected. In these optimal conditions, the TTT technology guarantees greater fracture deformability in the component zone which is to absorb energy.

Sheet Forming, Automotive, Tailored Properties

Published online 9/5/2023, 8 pages
Copyright © 2023 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA

Citation: Maria Emanuela Palmieri, Luigi Tricarico, Comparison between two tailored press hardening technologies by means of physical and numerical simulation, Materials Research Proceedings, Vol. 35, pp 45-52, 2023


The article was published as article 6 of the book Italian Manufacturing Association Conference

Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.

[1] Billur, Eren. “Hot stamping of ultra high-strength steels.” From a technological and business perspective. Cham (2019).
[2] Neugebauer, R., et al. “Press hardening-An innovative and challenging technology.” Archives of civil and mechanical engineering 12 (2012): 113-118.
[3] Boretti, Alberto. “Plug‐in hybrid electric vehicles are better than battery electric vehicles to reduce CO2 emissions until 2030.” International Journal of Energy Research 46.14 (2022): 20136-20145.
[4] Merklein, Marion, et al. “Hot stamping of boron steel sheets with tailored properties: A review.” Journal of materials processing technology 228 (2016): 11-24.
[5] Cheng, Wei, et al. “A process-performance coupled design method for hot-stamped tailor rolled blank structure.” Thin-Walled Structures 140 (2019): 132-143.
[6] Samadian, Pedram, et al. “Fracture response in hot-stamped tailor-welded blanks of Ductibor® 500-AS and Usibor® 1500-AS: experiments and modelling.” Engineering Fracture Mechanics 253 (2021): 107864.
[7] Mori, Ken-ichiro, et al. “Combined process of hot stamping and mechanical joining for producing ultra-high strength steel patchwork components.” Journal of Manufacturing Processes 59 (2020): 444-455.
[8] Harrer, T., and M. Schäfer. “Laser softening of press hardened steel for novel automotive parts.” Advanced High Strength Steel and Press Hardening: Proceedings of the 4th International Conference on Advanced High Strength Steel and Press Hardening (ICHSU2018). 2019.
[9] Palmieri, Maria Emanuela, Francesco Rocco Galetta, and Luigi Tricarico. “Study of Tailored Hot Stamping Process on Advanced High-Strength Steels.” Journal of Manufacturing and Materials Processing 6.1 (2022): 11.
[10] Information on, accessed October 2022.
[11] Palmieri, Maria Emanuela, et al. “Analysis of transition zone on a hot‐stamped part with tailored tool tempering approach by numerical and physical simulation.” steel research international
[12] Information on, accessed February 2023.
[13] Palmieri, Maria Emanuela, and Luigi Tricarico. “Numerical-experimental study of a tailored press-hardening technology with intermediate pre-cooling to manufacture an automotive component in advanced high strength steel.” Sheet Metal 2023 25 (2023): 447.