Details
| Translated title of the contribution | Numerical process design for targeted residual stress adjustment in hot bulk formed components taking into account macro- and microscale |
|---|---|
| Original language | German |
| Pages (from-to) | 757–771 |
| Number of pages | 15 |
| Journal | Forschung im Ingenieurwesen/Engineering Research |
| Volume | 85 |
| Issue number | 3 |
| Early online date | 20 Apr 2021 |
| Publication status | Published - Sept 2021 |
Abstract
The aim of this work is the adjustment of an advantageous compressive residual stress profile in hot-formed components by intelligent process control with tailored cooling from the forging heat. The feasibility and potential are demonstrated in a hot forming process in which cylindrical specimen with an eccentric hole are formed at 1000 °C and subsequently cooled in water from the forging heat. Previous work shows that tensile residual stresses occur in the specimen formed in this way from the material 1.3505. Using the presented multi-scale FE models, an alternative process variant is analysed in this work, where advantageous compressive residual stresses can be generated instead of tensile residual stresses through tailored cooling from the forming heat in the specimen. The tailored cooling is achieved by partially exposing the specimen to a water-air spray. In this way, the local plastification can be influenced by inhomogeneous strains due to thermal and transformation-induced effects in order to customise the resulting residual stress distribution. The scientific challenge of this work is to generate different residual stresses in the surface of the specimen without changing the geometrical and microstructural properties. It is demonstrated that influencing the residual stresses and even reversing the stress sign is possible using smart process control during cooling.
ASJC Scopus subject areas
- Engineering(all)
- General Engineering
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In: Forschung im Ingenieurwesen/Engineering Research, Vol. 85, No. 3, 09.2021, p. 757–771.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Numerische Prozessauslegung zur gezielten Eigenspannungseinstellung in warmmassivumgeformten Bauteilen unter Berücksichtigung von Makro- und Mikroskala
AU - Behrens, Bernd Arno
AU - Schröder, Jörg
AU - Brands, Dominik
AU - Brunotte, Kai
AU - Wester, Hendrik
AU - Scheunemann, Lisa
AU - Uebing, Sonja
AU - Kock, Christoph
N1 - Funding Information: Die Autoren bedanken sich für die vom Center for Computational Sciences and Simulation (CCSS) der Universität Duisburg-Essen zur Verfügung gestellte Rechenzeit auf dem Supercomputer magnitUDE (DFG-Förderung INST 20876/209-1 FUGG, INST 20876/243-1 FUGG) am Zentrum für Informations- und Mediendienste (ZIM). Gefördert durch die Deutsche Forschungsgemeinschaft (DFG)?? 374871564 (BE?1691/223-2; SCHR 570/33-2; BR 5278/3-2) im Rahmen des Schwerpunktprogramms SPP?2013.
PY - 2021/9
Y1 - 2021/9
N2 - The aim of this work is the adjustment of an advantageous compressive residual stress profile in hot-formed components by intelligent process control with tailored cooling from the forging heat. The feasibility and potential are demonstrated in a hot forming process in which cylindrical specimen with an eccentric hole are formed at 1000 °C and subsequently cooled in water from the forging heat. Previous work shows that tensile residual stresses occur in the specimen formed in this way from the material 1.3505. Using the presented multi-scale FE models, an alternative process variant is analysed in this work, where advantageous compressive residual stresses can be generated instead of tensile residual stresses through tailored cooling from the forming heat in the specimen. The tailored cooling is achieved by partially exposing the specimen to a water-air spray. In this way, the local plastification can be influenced by inhomogeneous strains due to thermal and transformation-induced effects in order to customise the resulting residual stress distribution. The scientific challenge of this work is to generate different residual stresses in the surface of the specimen without changing the geometrical and microstructural properties. It is demonstrated that influencing the residual stresses and even reversing the stress sign is possible using smart process control during cooling.
AB - The aim of this work is the adjustment of an advantageous compressive residual stress profile in hot-formed components by intelligent process control with tailored cooling from the forging heat. The feasibility and potential are demonstrated in a hot forming process in which cylindrical specimen with an eccentric hole are formed at 1000 °C and subsequently cooled in water from the forging heat. Previous work shows that tensile residual stresses occur in the specimen formed in this way from the material 1.3505. Using the presented multi-scale FE models, an alternative process variant is analysed in this work, where advantageous compressive residual stresses can be generated instead of tensile residual stresses through tailored cooling from the forming heat in the specimen. The tailored cooling is achieved by partially exposing the specimen to a water-air spray. In this way, the local plastification can be influenced by inhomogeneous strains due to thermal and transformation-induced effects in order to customise the resulting residual stress distribution. The scientific challenge of this work is to generate different residual stresses in the surface of the specimen without changing the geometrical and microstructural properties. It is demonstrated that influencing the residual stresses and even reversing the stress sign is possible using smart process control during cooling.
UR - http://www.scopus.com/inward/record.url?scp=85105023521&partnerID=8YFLogxK
U2 - 10.1007/s10010-021-00482-x
DO - 10.1007/s10010-021-00482-x
M3 - Artikel
AN - SCOPUS:85105023521
VL - 85
SP - 757
EP - 771
JO - Forschung im Ingenieurwesen/Engineering Research
JF - Forschung im Ingenieurwesen/Engineering Research
SN - 0015-7899
IS - 3
ER -