Deformation behaviors of a Fe-20Mn-3Al-3Si TRIP steel under quasi-static compression and dynamic impact

Liu, Chunyu; Shen, Shucheng; Xie, Pan; Wu, C.L.

doi:10.1016/j.matchar.2022.112095

Cited by 8 publications

(4 citation statements)

References 45 publications

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“…However, in lightweight Fe-Mn-Al-C steels characterized by high SFE, the observed slip mode is predominantly planar rather than wavy [13][14][15][16][17][18][19][20]. This apparent contradiction has been explained by researchers, attributing it to the formation of κ-carbides in lightweight steel [13,20]. The presence of these carbides induces a softening effect on the slip plane, thus promoting planar slip.…”

Section: Introductionmentioning

confidence: 94%

“…In conventional face-centered cubic (FCC) metals, the high SFE typically favors the cross-slip of dislocations, resulting in a "wavy slip" mode [14]. However, in lightweight Fe-Mn-Al-C steels characterized by high SFE, the observed slip mode is predominantly planar rather than wavy [13][14][15][16][17][18][19][20]. This apparent contradiction has been explained by researchers, attributing it to the formation of κ-carbides in lightweight steel [13,20].…”

Section: Introductionmentioning

confidence: 99%

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Dynamic Compression and Constitutive Model in Fe-27Mn-10Al-1C Duplex Lightweight Steel

Cao,

Li,

Bai

et al. 2024

Crystals

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Fe-Mn-Al-C lightweight steels have been of significant interest due to their excellent mechanical properties and unique microstructures. However, there has been limited focus on the dynamic deformation. Here, we systematically investigate the mechanical responses over various strain rates and corresponding microstructure evolution in quasi-static and dynamic compression to reveal the transition of deformation mechanisms. The present lightweight steel exhibits a significant strain rate effect, with the yield strength increasing from 735.8 to 1149.5 MPa when the strain rate increases from 10−3 to 3144 s−1. The deformation in ferrite under high-strain-rate loading is dominated by wave slip, forming a cellular structure (cell block). Meanwhile, the deformation in austenite is dominated by planar slip, forming dislocation substructures such as high-density dislocation walls and microbands. In addition, the deformation twinning (including secondary twinning)- and microband-induced plasticity effects are responsible for the excellent dynamic compression properties. This alloy delays damage location while maintaining high strength, making it ideal for shock loading and high-strain-rate applications. The Johnson–Cook (J-C) constitutive model is used to predict the deformation behavior of lightweight steel under dynamic conditions, and the J-C model agrees well with the experimental results.

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Section: Introductionmentioning

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Dynamic Compression and Constitutive Model in Fe-27Mn-10Al-1C Duplex Lightweight Steel

Cao,

Li,

Bai

et al. 2024

Crystals

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“…High mechanical properties of this group of steels depend on the chemical composition, in particular on Mn concentration (from 15% to 30%), which determines the main strengthening mechanism during technological forming [9]. High hardening rate of these steels and good plasticity result from straininduced martensitic transformation [10][11][12] or mechanical twinning [13][14][15]. The problem for wider use of this group of steels is insufficient hot ductility -especially above 1100°C [16][17][18] -and susceptibility to initiation and propagation of cracks in the surface layer of the ingot obtained with the use of continuous casting [19,20].…”

Section: Introductionmentioning

confidence: 99%

Effect of Non-Metallic Inclusions on the Hot Ductility of High-Mn Steels

Opiela¹,

Fojt-Dymara²

2023

Adv. Sci. Technol. Res. J.

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The aim of the work was to determine the effect of non-metallic inclusions on the hot ductility of two newly . For this purpose, a hot tensile test was carried out in the temperature range from 1050°C to 1200°C with a constant strain rate of 2.5⸱10 -3 s -1 . The tests were performed on the Gleeble 3800 thermomechanical simulator. Hot ductility of tested steels was defined by determining the reduction in area (% RA). Examined steels demonstrate diversified hot ductility. Clearly higher hot ductility was noted for the 24Mn-3Si-1.5Al-Ti steel. The reduction in area of this steel in the temperature range from 1050°C to 1200°C decreases from approx. 90% to about 58%, while the reduction in area of the 27Mn-4Si-2Al steel, in the same temperature range, decreases from approx. 66% to about 34%. The presence of single, regular-shaped AlN particles and complex MnS-AlN-type non-metallic inclusions was revealed in the 27Mn-4Si-2Al steel. Whereas fine (Ce, La, Nd)S-type sulphides, properly modified with rare earth elements, were identified in the 24Mn-3Si-1.5Al-Ti steel. The AlN-type inclusions and complex MnS-AlN-type inclusions were not revealed in the 24Mn-3Si-1.5Al-Ti steel. This is due to the presence of Ti microaddition, the concentration of which guaranteed binding of the whole nitrogen into stable TiN-type nitrides. Sulphides, disclosed in the 24Mn-3Si-1.5Al-Ti steel, are globular or slightly elongated in the direction of plastic deformation, as confirmed by a very low value of the elongation factor equal 1.48. This creates the opportunity to produce sheets of high strength and ductility and low anisotropy of mechanical properties.

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“…This microstructure is capable of achieving a range of tensile properties that fall within 500-1050 MPa range of UTS and 10-30% range for TE [139]. However, High Mn steel developments have reported TRIP as unique contribution to strain hardening in compositions with contents of Mn around 20 wt.% [140,141]. It is important to note that the TRIP deformation mechanism can be also present in other steel grades, including Q&P, CFB and medium Mn steels.…”

Section: Trip Steelsmentioning

confidence: 99%

Design of High Mn Fe-Mn-Al-C Low Density Steels for Additive Manufacturing

Sánchez Poncela

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Deformation behaviors of a Fe-20Mn-3Al-3Si TRIP steel under quasi-static compression and dynamic impact

Cited by 8 publications

References 45 publications

Dynamic Compression and Constitutive Model in Fe-27Mn-10Al-1C Duplex Lightweight Steel

Dynamic Compression and Constitutive Model in Fe-27Mn-10Al-1C Duplex Lightweight Steel

Effect of Non-Metallic Inclusions on the Hot Ductility of High-Mn Steels

Design of High Mn Fe-Mn-Al-C Low Density Steels for Additive Manufacturing

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