A Sectionwise Defined Model for the Material Description of 100Cr6 in the Thixotropic State

authored by: B. A. Behrens, A. Chugreev, M. Hootak
Abstract: A sectionwise defined material model has been developed for the numerical description of thixoforming processes. It consists of two sections. The first one describes the material behaviour below the solidus temperature and comprises an approach from structure mechanics, whereas the second section model describes the thixotropic behaviour above the solidus temperature based on the Ostwald-de Waele power law. The material model has been implemented in a commercial FE software Simufact Forming by means of user-defined subroutines. Numerical and experimental investigations of special upsetting tests have been designed and carried out with Armco iron-coated specimens. Finally, the model parameters were fitted by reverse engineering.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Conference contribution
Publication date: 03.05.2018
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Physics and Astronomy
Electronic version(s): https://doi.org/10.1063/1.5034860 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{90d3d8cff1d14cc080275c7104ca85ee,
title = "A Sectionwise Defined Model for the Material Description of 100Cr6 in the Thixotropic State",
abstract = "A sectionwise defined material model has been developed for the numerical description of thixoforming processes. It consists of two sections. The first one describes the material behaviour below the solidus temperature and comprises an approach from structure mechanics, whereas the second section model describes the thixotropic behaviour above the solidus temperature based on the Ostwald-de Waele power law. The material model has been implemented in a commercial FE software Simufact Forming by means of user-defined subroutines. Numerical and experimental investigations of special upsetting tests have been designed and carried out with Armco iron-coated specimens. Finally, the model parameters were fitted by reverse engineering.",
author = "Behrens, {B. A.} and A. Chugreev and M. Hootak",
note = "Funding information: The authors would like to thank the German Research Foundation (DFG) for financially supporting the research project B03616/8-1+9-1 “Numerical Calculation of Thermal Die Load and Die Life during Thixoforging of Steel” and Mr. Hake from IW (Institut fuer Werkstoffkunde, LUH) for the DSC-measurements.; 21st International ESAFORM Conference on Material Forming, ESAFORM 2018 ; Conference date: 23-04-2018 Through 25-04-2018",
year = "2018",
month = may,
day = "3",
doi = "10.1063/1.5034860",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
editor = "Gianluca Buffa and Livan Fratini and Giuseppe Ingarao and {Di Lorenzo}, Rosa",
booktitle = "Proceedings of the 21st International ESAFORM Conference on Material Forming, ESAFORM 2018",
address = "United States",
}