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Numerical characterization of residual stresses in a four-point-bending experiment of textured duplex stainless steel

Maassen, S. F.; Erdle, H.; Pulvermacher, S.; Brands, D.; Böhlke, T.; Gibmeier, J.; Schröder, J.

Abstract:
The resulting shapes in production processes of metal components are strongly influenced by deformation induced residual stresses. Dual-phase steels are commonly used for industrial application of, e.g., forged or deep-drawn structural parts. This is due to their ability to handle high plastic deformations, while retaining desired stiffness for the products. In order to influence the resulting shape as well as component characteristics positively it is important to predict the distribution of phase-specific residual stresses which occur on the microscale of the material. In this contribution a comparative study is presented, where two approaches for the numerical simulation of residual stresses are applied. On the one hand a numerically efficient mean field theory is used to estimate on the grain level the total strain, the plastic strains and the eigenstrains based on macroscopic stress, strain and stiffness data. An alternative ansatz relies on a Taylor approximation for the grain level strains. Both approaches are applied to the corrosion-resistant duplex steel X2CrNiMoN22-5-3 (1.4462), which consists of a ferritic and an austenitic phase with the same volume fraction. ... mehr

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Verlagsausgabe §
DOI: 10.5445/IR/1000131162
Veröffentlicht am 12.04.2021
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Technische Mechanik (ITM)
Publikationstyp Zeitschriftenaufsatz
Publikationsjahr 2021
Sprache Englisch
Identifikator ISSN: 0939-1533, 0020-1154, 1432-0681
KITopen-ID: 1000131162
Erschienen in Archive of Applied Mechanics
Verlag Springer
Vorab online veröffentlicht am 19.03.2021
Schlagwörter Residual stresses; Mean field approach; Beam element; Four-point-bending experiment;
Nachgewiesen in Scopus
Web of Science
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