Microstructural evolution and mechanical properties of hybrid bevel gears manufactured by tailored forming

authored by: Bernd Arno Behrens, Anna Chugreeva, Julian Diefenbach, Christoph Kahra, Sebastian Herbst, Florian Nürnberger, Hans Jürgen Maier
Abstract: The production of multi-metal bulk components requires suitable manufacturing technologies. On the example of hybrid bevel gears featuring two different steels at the outer surface and on the inside, the applicability of the novel manufacturing technology of Tailored Forming was investigated. In a first processing step, a semi-finished compound was manufactured by cladding a substrate using a plasma transferred arc welding or a laser hotwire process. The resulting semi-finished workpieces with a metallurgical bond were subsequently near-net shape forged to bevel gears. Using the residual heat after the forging process, a process-integrated heat treatment was carried out directly after forming. For the investigations, the material combinations of 41Cr4 with C22.8 (AISI 5140/AISI 1022M) and X45CrSi9-3 with C22.8 (AISI HNV3/AISI 1022M) were applied. To reveal the influence of the single processing steps on the resulting interface, metallographic examinations, hardness measurements and micro tensile tests were carried out after cladding, forging and process-integrated heat treatment. Due to forging and heat-treatment, recrystallization and grain refinement at the interface and an increase in both, hardness and tensile strength, were observed.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Institute of Materials Science
Type: Article
Journal: Metals
Volume: 10
Pages: 1-14
No. of pages: 14
ISSN: 2075-4701
Publication date: 13.10.2020
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Materials Science
Electronic version(s): https://doi.org/10.3390/met10101365 (Access: Open)
: Details in the research portal "Research@Leibniz University"

BibTeX

@article{eaf4d9c82da34c84973c13b4c9f1fbfd,
title = "Microstructural evolution and mechanical properties of hybrid bevel gears manufactured by tailored forming",
abstract = "The production of multi-metal bulk components requires suitable manufacturing technologies. On the example of hybrid bevel gears featuring two different steels at the outer surface and on the inside, the applicability of the novel manufacturing technology of Tailored Forming was investigated. In a first processing step, a semi-finished compound was manufactured by cladding a substrate using a plasma transferred arc welding or a laser hotwire process. The resulting semi-finished workpieces with a metallurgical bond were subsequently near-net shape forged to bevel gears. Using the residual heat after the forging process, a process-integrated heat treatment was carried out directly after forming. For the investigations, the material combinations of 41Cr4 with C22.8 (AISI 5140/AISI 1022M) and X45CrSi9-3 with C22.8 (AISI HNV3/AISI 1022M) were applied. To reveal the influence of the single processing steps on the resulting interface, metallographic examinations, hardness measurements and micro tensile tests were carried out after cladding, forging and process-integrated heat treatment. Due to forging and heat-treatment, recrystallization and grain refinement at the interface and an increase in both, hardness and tensile strength, were observed.",
keywords = "Air-water spray cooling, Bevel gears, Hot forging, Hybrid components, Process-integrated heat treatment, Self-tempering, Tailored forming",
author = "Behrens, {Bernd Arno} and Anna Chugreeva and Julian Diefenbach and Christoph Kahra and Sebastian Herbst and Florian N{\"u}rnberger and Maier, {Hans J{\"u}rgen}",
note = "Funding Information: Funding: This research was funded by the Deutsche Forschungsgemeinschaft (DFG, German Research Foundation) grant number 252662854. Funding Information: Acknowledgments: The results presented in this paper were obtained within the Collaborative Research Centre 1153 “Process chain to produce hybrid high-performance components by Tailored Forming” in subprojects A2 and B2. The authors would like to thank the subproject A4 (Alexander Barroi and Maximillian Mildebrath) for supplying cladded hybrid workpieces and the German Research Foundation (DFG) for the financial support of this project.",
year = "2020",
month = oct,
day = "13",
doi = "10.3390/met10101365",
language = "English",
volume = "10",
pages = "1--14",
journal = "Metals",
issn = "2075-4701",
publisher = "Multidisciplinary Digital Publishing Institute",
number = "10",
}