A comprehensive design approach to increase the performance of steels under minimal costs and environmental impacts

Gramlich, Alexander; Helbig, Christoph; Schmidt, Moritz; Hagedorn, Wiebke

doi:10.1016/j.susmat.2024.e01040

Sustainable Materials and Technologies

2024

DOI: 10.1016/j.susmat.2024.e01040

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A comprehensive design approach to increase the performance of steels under minimal costs and environmental impacts

Alexander Gramlich,

Christoph Helbig,

Moritz Schmidt

et al.

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2024

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The Influence of Microstructure and Process Design on the Plastic Stability of 4 wt% Medium‐Manganese Steels

Gülbay,

Büßenschütt,

Kozlowska

et al. 2024

steel research int.

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The influence of different microstructures on the plastic stability of an air‐hardened industrially produced medium‐manganese steel is presented. For this matter, heat treatment parameters before and during intercritical annealing (IA) are varied, to achieve different microstructures. The resulting duplex microstructure is consecutively tested by tensile tests, which are monitored by digital image correlation (DIC) to obtain information on the local plastic deformation. The tests are accompanied by microstructure investigations using optical, scanning electron, and transmission electron microscopy. Finally, X‐ray and electron backscatter diffraction experiments are performed before and after deformation, to describe the altering phase fractions. It is demonstrated that the effect of the deformation temperature prior to IA treatment has a significant influence on the duplex microstructure, as it changes the austenite morphology from lamellar to globular and increases the phase fraction. The change in austenite phase fraction and morphology results in a higher yield strength (≈100 MPa), as well as higher uniform and total elongations (+2% and +5%, respectively). The DIC and tensile tests reveal that these differences in the austenite phase lead to a complete change in the strain hardening behavior, from continuous flow to discontinuous serrated flow, with clearly visible deformation bands during plastic deformation.

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The Influence of Microstructure and Process Design on the Plastic Stability of 4 wt% Medium‐Manganese Steels

Gülbay,

Büßenschütt,

Kozlowska

et al. 2024

steel research int.

View full text Add to dashboard Cite

show abstract

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A comprehensive design approach to increase the performance of steels under minimal costs and environmental impacts

Cited by 1 publication

References 48 publications

The Influence of Microstructure and Process Design on the Plastic Stability of 4 wt% Medium‐Manganese Steels

The Influence of Microstructure and Process Design on the Plastic Stability of 4 wt% Medium‐Manganese Steels

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