Characterisation and Qualification of Hot Working Tool Steels and Inconel for the Production of a Hybrid Forging Die

authored by: J. Siring, M. Till, H. Wester, J. Uhe, K. Brunotte
Abstract: In forging, premature die failure caused by high cyclic thermo-mechanical loads leads to higher production costs. The die life can be increased by using high strength materials like nickel-based alloys (Inconel). However, the application of Inconel as die material is challenging due to its high costs and poor machinability compared to conventional tool steels. Therefore, an approach to produce hybrid dies consisting of hot working tool steels and Inconel according to the Tailored Forming concept is presented. The dies are manufactured by forging pre-joined semi-finished workpieces. To resolve challenges like different flow behaviours, first a material characterisation of two hot working tool steels (1.2343/1.2367) and two Inconel alloys (625/718) was carried out using uniaxial compression tests. Based on the determined mechanical properties suitable process windows were investigated and FE-simulations for the hot forming of hybrid Inconel and tool steel semi-finished workpieces were carried out to investigate the resulting material distribution.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Type: Contribution to book/anthology
Pages: 638–647
No. of pages: 10
Publication date: 18.11.2023
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: Safety, Risk, Reliability and Quality, Economics, Econometrics and Finance (miscellaneous), Industrial and Manufacturing Engineering
Electronic version(s): https://doi.org/10.1007/978-3-031-47394-4_62 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inbook{35a1fdd38b9f4599974572612afbebb9,
title = "Characterisation and Qualification of Hot Working Tool Steels and Inconel for the Production of a Hybrid Forging Die",
abstract = "In forging, premature die failure caused by high cyclic thermo-mechanical loads leads to higher production costs. The die life can be increased by using high strength materials like nickel-based alloys (Inconel). However, the application of Inconel as die material is challenging due to its high costs and poor machinability compared to conventional tool steels. Therefore, an approach to produce hybrid dies consisting of hot working tool steels and Inconel according to the Tailored Forming concept is presented. The dies are manufactured by forging pre-joined semi-finished workpieces. To resolve challenges like different flow behaviours, first a material characterisation of two hot working tool steels (1.2343/1.2367) and two Inconel alloys (625/718) was carried out using uniaxial compression tests. Based on the determined mechanical properties suitable process windows were investigated and FE-simulations for the hot forming of hybrid Inconel and tool steel semi-finished workpieces were carried out to investigate the resulting material distribution.",
keywords = "Hybrid forging dies, Material characterisation, Tailored Forming",
author = "J. Siring and M. Till and H. Wester and J. Uhe and K. Brunotte",
note = "The results presented were obtained in the research project “High-temperature-resistant tool edge layer by applying the Tailored Forming technology to hot forging tools” (T03) funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) – Collaborative Research Centre 1153 “Process chain to produce hybrid high performance components by Tailored Forming” - 252662854. The authors would like to thank the German Research Foundation for the financial support.",
year = "2023",
month = nov,
day = "18",
doi = "10.1007/978-3-031-47394-4_62",
language = "English",
isbn = "9783031473937",
series = "Lecture Notes in Production Engineering",
pages = "638–647",
booktitle = "Lecture Notes in Production Engineering",
}