Improving the mechanical properties of laser beam welded hybrid workpieces by deformation processing

authored by: Bernd-Arno Behrens, A. Amiri, Deniz Duran, S. Nothdurft, Jörg Hermsdorf, Stefan Kaierle, Hendrik Ohrdes, Jörg Wallaschek, Thomas Hassel
Abstract: Today’s competitive manufacturing world needs machine components which are high quality, cost-efficient and light weight. The welding of different materials is a common technique to produce machine components capable of matching these goals, although some welding processes may negatively impact the quality of the components produced. “Tailored Forming” is a novel processing concept in which hybrid workpieces are fabricated by welding different metals together and subjecting them to deformation processing at elevated temperatures. The combination of plastic straining and high temperatures during forming leads to the activation of the recovery and recrystallization processes. These processes act to improve the mechanical properties of the component, by replacing the directional and coarse microstructure of the weld metal, with an equiaxed, fine microstructure after forging. The hybrid forging billets used in this study combine alloy steel (41Cr4) with plain carbon steel (C22.8), and are manufactured by laser beam welding. An experimental test matrix is employed, which utilises the variations of process parameters, to influence the geometry and microstructure of the materials’ joining zone. The effects of the deformation processing of laser welded hybrid workpieces are characterised by destructive testing and metallography.
Organisation(s): Institute of Metal Forming and Metal Forming Machines
Institute of Dynamics and Vibration Research
Institute of Materials Science
External Organisation(s): Islamic Azad University
Laser Zentrum Hannover e.V. (LZH)
Type: Conference contribution
No. of pages: 7
Publication date: 02.07.2019
Publication status: Published
Peer reviewed: Yes
ASJC Scopus subject areas: General Physics and Astronomy
Electronic version(s): https://doi.org/10.1063/1.5112559 (Access: Closed)
: Details in the research portal "Research@Leibniz University"

BibTeX

@inproceedings{ca5a97751bc14dcaad8c84d1ab5c9ba6,
title = "Improving the mechanical properties of laser beam welded hybrid workpieces by deformation processing",
abstract = "Today{\textquoteright}s competitive manufacturing world needs machine components which are high quality, cost-efficient and light weight. The welding of different materials is a common technique to produce machine components capable of matching these goals, although some welding processes may negatively impact the quality of the components produced. “Tailored Forming” is a novel processing concept in which hybrid workpieces are fabricated by welding different metals together and subjecting them to deformation processing at elevated temperatures. The combination of plastic straining and high temperatures during forming leads to the activation of the recovery and recrystallization processes. These processes act to improve the mechanical properties of the component, by replacing the directional and coarse microstructure of the weld metal, with an equiaxed, fine microstructure after forging. The hybrid forging billets used in this study combine alloy steel (41Cr4) with plain carbon steel (C22.8), and are manufactured by laser beam welding. An experimental test matrix is employed, which utilises the variations of process parameters, to influence the geometry and microstructure of the materials{\textquoteright} joining zone. The effects of the deformation processing of laser welded hybrid workpieces are characterised by destructive testing and metallography.",
author = "Bernd-Arno Behrens and A. Amiri and Deniz Duran and S. Nothdurft and J{\"o}rg Hermsdorf and Stefan Kaierle and Hendrik Ohrdes and J{\"o}rg Wallaschek and Thomas Hassel",
note = "Funding information: The results presented in this paper were obtained within the Collaborative Research Centre 1153 {\textquoteleft}{\textquoteleft}Process chain to produce hybrid high performance components by Tailored Forming{\textquoteright}{\textquoteright} in the subprojects A3 and B3 (project number: 252662854). The authors would like to thank the German Research Foundation (DFG) for the financial and organizational support of this project.; 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 = "10.1063/1.5112559",
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",
}