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Improving the formability of linear flow split profiles by laser annealing

Niehuesbernd, Jörn and Monnerjahn, Vinzent and Bruder, Enrico and Groche, Peter and Müller, Clemens (2016):
Improving the formability of linear flow split profiles by laser annealing.
In: Materialwissenschaft und Werkstofftechnik, Wiley-VCH Verlag GmbH, Weinheim, Germany, pp. 1174-1181, 47, (12), ISSN 09335137, DOI: 10.1002/mawe.201600577, [Online-Edition: https://doi.org/10.1002/mawe.201600577],
[Article]

Abstract

The effect of laser annealing on the mechanical properties of severely deformed low alloy steel is discussed. Two different sets of annealing parameters were used to achieve improvements in formability. The resulting microstructures, tensile properties and hardness distributions are reviewed. Annealing at temperatures around 700 degrees C with very high heating and cooling rates leads to recrystallization at the surface and moderate grain growth in subsequent layers. The improvement in ductility is proven to be sufficient to prevent cracking during bending operations.

Item Type: Article
Erschienen: 2016
Creators: Niehuesbernd, Jörn and Monnerjahn, Vinzent and Bruder, Enrico and Groche, Peter and Müller, Clemens
Title: Improving the formability of linear flow split profiles by laser annealing
Language: English
Abstract:

The effect of laser annealing on the mechanical properties of severely deformed low alloy steel is discussed. Two different sets of annealing parameters were used to achieve improvements in formability. The resulting microstructures, tensile properties and hardness distributions are reviewed. Annealing at temperatures around 700 degrees C with very high heating and cooling rates leads to recrystallization at the surface and moderate grain growth in subsequent layers. The improvement in ductility is proven to be sufficient to prevent cracking during bending operations.

Journal or Publication Title: Materialwissenschaft und Werkstofftechnik
Volume: 47
Number: 12
Publisher: Wiley-VCH Verlag GmbH, Weinheim, Germany
Uncontrolled Keywords: Laser annealing, rapid heating, linear flow Splitting, formability, ultrafine grained (UFG)
Divisions: 11 Department of Materials and Earth Sciences
11 Department of Materials and Earth Sciences > Material Science
11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
16 Department of Mechanical Engineering
16 Department of Mechanical Engineering > Institut für Produktionstechnik und Umformmaschinen (PtU)
DFG-Collaborative Research Centres (incl. Transregio)
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres
DFG-Collaborative Research Centres (incl. Transregio) > Collaborative Research Centres > CRC 666: Integral Sheet Metal Design with Higher Order Bifurcations
Date Deposited: 27 Nov 2017 11:35
DOI: 10.1002/mawe.201600577
Official URL: https://doi.org/10.1002/mawe.201600577
Funders: The authors thank the German Research Foundation (DFG) for funding the present work, which has been carried out within the subprojects B4 and C5 of the Collaborative Research Centre 666 "Integral sheet metal design with higher order".
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