TY - GEN

T1 - Improving the mechanical properties of laser beam welded hybrid workpieces by deformation processing

AU - Behrens, Bernd-Arno

AU - Amiri, A.

AU - Duran, Deniz

AU - Nothdurft, S.

AU - Hermsdorf, Jörg

AU - Kaierle, Stefan

AU - Ohrdes, Hendrik

AU - Wallaschek, Jörg

AU - Hassel, Thomas

N1 - Funding information: 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 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.

PY - 2019/7/2

Y1 - 2019/7/2

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=85068875633&partnerID=8YFLogxK

U2 - 10.1063/1.5112559

DO - 10.1063/1.5112559

M3 - Conference contribution

AN - SCOPUS:85068875633

T3 - AIP Conference Proceedings

BT - Proceedings of the 22nd International ESAFORM Conference on Material Forming

A2 - Arrazola, Pedro

A2 - Saenz de Argandona, Eneko

A2 - Otegi, Nagore

A2 - Mendiguren, Joseba

A2 - Saez de Buruaga, Mikel

A2 - Madariaga, Aitor

A2 - Galdos, Lander

T2 - 22nd International ESAFORM Conference on Material Forming, ESAFORM 2019

Y2 - 8 May 2019 through 10 May 2019

ER -