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Quantifying the Contribution of Crystallographic Texture and Grain Morphology on the Elastic and Plastic Anisotropy of bcc Steel

Diehl, Martin ; Niehuesbernd, Jörn ; Bruder, Enrico (2024)
Quantifying the Contribution of Crystallographic Texture and Grain Morphology on the Elastic and Plastic Anisotropy of bcc Steel.
In: Metals, 2019, 9 (12)
doi: 10.26083/tuprints-00015736
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Quantifying the Contribution of Crystallographic Texture and Grain Morphology on the Elastic and Plastic Anisotropy of bcc Steel
Language: English
Date: 16 January 2024
Place of Publication: Darmstadt
Year of primary publication: 2019
Place of primary publication: Basel
Publisher: MDPI
Journal or Publication Title: Metals
Volume of the journal: 9
Issue Number: 12
Collation: 21 Seiten
DOI: 10.26083/tuprints-00015736
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

The influence of grain shape and crystallographic orientation on the global and local elastic and plastic behaviour of strongly textured materials is investigated with the help of full-field simulations based on texture data from electron backscatter diffraction (EBSD) measurements. To this end, eight different microstructures are generated from experimental data of a high-strength low-alloy (HSLA) steel processed by linear flow splitting. It is shown that the most significant factor on the global elastic stress–strain response (i.e., Young’s modulus) is the crystallographic texture. Therefore, simple texture-based models and an analytic expression based on the geometric mean to determine the orientation dependent Young’s modulus are able to give accurate predictions. In contrast, with regards to the plastic anisotropy (i.e., yield stress), simple analytic approaches based on the calculation of the Taylor factor, yield different results than full-field microstructure simulations. Moreover, in the case of full-field models, the selected microstructure representation influences the outcome of the simulations. In addition, the full-field simulations, allow to investigate the micro-mechanical fields, which are not readily available from the analytic expressions. As the stress–strain partitioning visible from these fields is the underlying reason for the observed macroscopic behaviour, studying them makes it possible to evaluate the microstructure representations with respect to their capabilities of reproducing experimental results.

Uncontrolled Keywords: anisotropy, linear flow splitting, crystal plasticity, DAMASK, texture, EBSD
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-157368
Additional Information:

This article belongs to the Special Issue Dislocation Mechanics of Metal Plasticity and Fracturing

Classification DDC: 500 Science and mathematics > 530 Physics
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Physical Metallurgy
Date Deposited: 16 Jan 2024 12:38
Last Modified: 18 Jan 2024 10:16
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/15736
PPN: 514765356
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