Investigation of the forming limit behavior of martensitic chromium steels for hot sheet metal forming

Untersuchung der Grenzformänderung martensitischer Chromstähle für die Warmblechumformung

authored by: Eugen Stockburger, Hendrik Wester, Johanna Uhe, Kai Brunotte, Bernd-Arno Behrens
Abstract: A possible alternative to the established press hardening steel Usibor 1500 (22MnB5) are hot formed martensitic chromium steels. The combination of strength and ductility of the martensitic chromium steels can be adjusted to an extreme level. By this means conventional lightweight solutions can be enhanced and this leads to a more economical use of resources. Furthermore, the extreme strength combined with the higher ductility provides an extreme crash safety of the produced car body parts. Forming limit curves (FLC) are used to identify the forming capacity of the sheet material, so the production process can be designed to the limiting range. Conventional FLC recorded at room temperature do not adequately describe the forming capacity for hot forming as it strongly depends on temperature. Therefore, in this paper an experimental-numerical method for determining quasi-isothermal FLC at high forming temperatures is introduced, applied to the steel AISI 420C (X46Cr13) at 900 °C and compared to literature values of Usibor 1500.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Conference contribution
Pages: 159-168
No. of pages: 10
Publication date: 24.11.2019
Publication status: Published
Peer reviewed: Yes
Electronic version(s): https://doi.org/10.1007/978-3-662-60417-5_16 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{cc0b7f82fba64d969cb9ce292cbf4380,
title = "Investigation of the forming limit behavior of martensitic chromium steels for hot sheet metal forming: Untersuchung der Grenzform{\"a}nderung martensitischer Chromst{\"a}hle f{\"u}r die Warmblechumformung",
abstract = "A possible alternative to the established press hardening steel Usibor 1500 (22MnB5) are hot formed martensitic chromium steels. The combination of strength and ductility of the martensitic chromium steels can be adjusted to an extreme level. By this means conventional lightweight solutions can be enhanced and this leads to a more economical use of resources. Furthermore, the extreme strength combined with the higher ductility provides an extreme crash safety of the produced car body parts. Forming limit curves (FLC) are used to identify the forming capacity of the sheet material, so the production process can be designed to the limiting range. Conventional FLC recorded at room temperature do not adequately describe the forming capacity for hot forming as it strongly depends on temperature. Therefore, in this paper an experimental-numerical method for determining quasi-isothermal FLC at high forming temperatures is introduced, applied to the steel AISI 420C (X46Cr13) at 900 °C and compared to literature values of Usibor 1500.",
author = "Eugen Stockburger and Hendrik Wester and Johanna Uhe and Kai Brunotte and Bernd-Arno Behrens",
year = "2019",
month = nov,
day = "24",
doi = "10.1007/978-3-662-60417-5_16",
language = "English",
isbn = "978-3-662-60416-8",
pages = "159--168",
editor = "Wulfsberg, {Jens Peter} and Wolfgang Hintze and Bernd-Arno Behrens",
booktitle = "Production at the leading edge of technology",
publisher = "Springer Berlin Heidelberg",
edition = "1.",
note = "9th Congress of the German Academic Association for Production Technology (WGP) ; Conference date: 30-09-2019 Through 02-10-2019",
}