Details
| Original language | English |
|---|---|
| Title of host publication | Proceedings 28th International Conference on Metallurgy and Materials |
| Pages | 320-325 |
| Number of pages | 6 |
| ISBN (electronic) | 978-80-87294-92-5 |
| Publication status | Published - 4 Nov 2019 |
| Event | 28th International Conference on Metallurgy and Materials, METAL 2019 - Brno, Czech Republic Duration: 22 May 2019 → 24 May 2019 |
Publication series
| Name | Metal Conference Proceedings |
|---|---|
| ISSN (electronic) | 2694-9296 |
Abstract
Hot stamping has become an established technology for the production of high strength steel parts in the automotive industry. The sheets are heated up to temperatures over austenitization temperature and held in order to obtain a fully austenised microstructure, formed and subsequently quenched. A locally optimized time-temperature-profile during heating provides the possibility to produce tailored parts, with locally varying microstructure and thus locally adapted mechanical properties. In order to determine an appropriate partial heating strategy, the heating as well as the cooling process has to be analyzed. In this paper a numerical model of a partial heating process is investigated in LS-DYNA comprising the heating process as well as the subsequent cooling phase. In order to describe the heating process, a new material model in LS-DYNA is used, which is suited for modeling arbitrary phase transformation processes of multiple phases with help of different transformation equations. The parameters of the numerical model are determined by means of experimental tests. The numerical findings are validated by comparison with experimental masking test.
Keywords
- Austenitization, FEM, Hot Stamping, Material Characterization, Partial Heating
ASJC Scopus subject areas
- Materials Science(all)
- Surfaces, Coatings and Films
- Engineering(all)
- Mechanics of Materials
- Materials Science(all)
- Metals and Alloys
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Proceedings 28th International Conference on Metallurgy and Materials. 2019. p. 320-325 (Metal Conference Proceedings).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Parametrisation of a numerical model for a partial heating strategy used to evaluate a masking concept of a hot stamping process
AU - Behrens, Bernd-Arno
AU - Chugreev, Alexander
AU - Jalanesh, Masood
AU - Wölki, Kai
AU - Bohne, Florian
N1 - Funding information: The presented work is a result of the project: „Partielles Formhärten durch Einsatz einer Maskierung im Ofenprozess“ funded by the Deutsche Forschungsgemeinschaft - 310404283. The authors gratefully thank for the funding.
PY - 2019/11/4
Y1 - 2019/11/4
N2 - Hot stamping has become an established technology for the production of high strength steel parts in the automotive industry. The sheets are heated up to temperatures over austenitization temperature and held in order to obtain a fully austenised microstructure, formed and subsequently quenched. A locally optimized time-temperature-profile during heating provides the possibility to produce tailored parts, with locally varying microstructure and thus locally adapted mechanical properties. In order to determine an appropriate partial heating strategy, the heating as well as the cooling process has to be analyzed. In this paper a numerical model of a partial heating process is investigated in LS-DYNA comprising the heating process as well as the subsequent cooling phase. In order to describe the heating process, a new material model in LS-DYNA is used, which is suited for modeling arbitrary phase transformation processes of multiple phases with help of different transformation equations. The parameters of the numerical model are determined by means of experimental tests. The numerical findings are validated by comparison with experimental masking test.
AB - Hot stamping has become an established technology for the production of high strength steel parts in the automotive industry. The sheets are heated up to temperatures over austenitization temperature and held in order to obtain a fully austenised microstructure, formed and subsequently quenched. A locally optimized time-temperature-profile during heating provides the possibility to produce tailored parts, with locally varying microstructure and thus locally adapted mechanical properties. In order to determine an appropriate partial heating strategy, the heating as well as the cooling process has to be analyzed. In this paper a numerical model of a partial heating process is investigated in LS-DYNA comprising the heating process as well as the subsequent cooling phase. In order to describe the heating process, a new material model in LS-DYNA is used, which is suited for modeling arbitrary phase transformation processes of multiple phases with help of different transformation equations. The parameters of the numerical model are determined by means of experimental tests. The numerical findings are validated by comparison with experimental masking test.
KW - Austenitization
KW - FEM
KW - Hot Stamping
KW - Material Characterization
KW - Partial Heating
UR - http://www.scopus.com/inward/record.url?scp=85079447611&partnerID=8YFLogxK
U2 - 10.37904/metal.2019.684
DO - 10.37904/metal.2019.684
M3 - Conference contribution
AN - SCOPUS:85079447611
T3 - Metal Conference Proceedings
SP - 320
EP - 325
BT - Proceedings 28th International Conference on Metallurgy and Materials
T2 - 28th International Conference on Metallurgy and Materials, METAL 2019
Y2 - 22 May 2019 through 24 May 2019
ER -