Application of the Sehitoglu's model for the calculation of tool life in thixoforging of steel parts

authored by: Bernd-Arno Behrens, Aleksandr Chugreev, Maiwand Hootak
Abstract: Thixoforming as a forming technology takes advantage of the semi-solid material state in order to produce geometrically complex parts. In the automotive industry, several aluminium components are partly manufactured by thixoforming processes. However, the production of steel parts is still challenging and has not yet been established in the industry. One of the main reasons is a short tool life due to high process temperatures. In this paper, the Sehitoglu's model is introduced as a life prediction approach for forging tools. For this purpose, results of low-cycle fatigue tests are presented. The findings are used for the determination of the model's material parameters. Numerical calculation of the thermo-mechanical tool loads during thixoforging was carried out. Fatigue tool life can be calculated on the basis of these data by implementing the Sehitoglu's model in the commercial FE software Simufact.forming by means of user-defined subroutines.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Conference contribution
No. of pages: 7
Publication date: 02.07.2019
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Ecology, Evolution, Behavior and Systematics, Ecology, Plant Science, General Physics and Astronomy, Nature and Landscape Conservation
Electronic version(s): https://doi.org/10.1063/1.5112543 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{2a95107721b04fa392b35de7eb2ce4da,
title = "Application of the Sehitoglu's model for the calculation of tool life in thixoforging of steel parts",
abstract = "Thixoforming as a forming technology takes advantage of the semi-solid material state in order to produce geometrically complex parts. In the automotive industry, several aluminium components are partly manufactured by thixoforming processes. However, the production of steel parts is still challenging and has not yet been established in the industry. One of the main reasons is a short tool life due to high process temperatures. In this paper, the Sehitoglu's model is introduced as a life prediction approach for forging tools. For this purpose, results of low-cycle fatigue tests are presented. The findings are used for the determination of the model's material parameters. Numerical calculation of the thermo-mechanical tool loads during thixoforging was carried out. Fatigue tool life can be calculated on the basis of these data by implementing the Sehitoglu's model in the commercial FE software Simufact.forming by means of user-defined subroutines.",
author = "Bernd-Arno Behrens and Aleksandr Chugreev and Maiwand Hootak",
note = "Funding information: The authors would like to thank the German Research Foundation (DFG) for financially supporting the research project “Numerical Calculation of Thermal Die Load and Die Life during Thixoforging of Steel” (project number 299534929) and Dr.-Ing. Mark Alan Swider from IW (Institut fuer Werkstoffkunde, LUH) for the kind support.; 22nd International ESAFORM Conference on Material Forming, ESAFORM 2019 ; Conference date: 08-05-2019 Through 10-05-2019",
year = "2019",
month = jul,
day = "2",
doi = "10.1063/1.5112543",
language = "English",
series = "AIP Conference Proceedings",
publisher = "American Institute of Physics Inc.",
number = "1",
editor = "Pedro Arrazola and {Saenz de Argandona}, Eneko and Nagore Otegi and Joseba Mendiguren and {Saez de Buruaga}, Mikel and Aitor Madariaga and Lander Galdos",
booktitle = "Proceedings of the 22nd International ESAFORM Conference on Material Forming",
address = "United States",
}