Effects of strain rate on mechanical properties and deformation behavior of an austenitic Fe-25Mn-3Al-3Si TWIP-TRIP steel

Benzing, Jake T.; Poling, Whitney A.; Pierce, D.T.; Bentley, J.; Findley, Kip O.; Raabe, Dierk; Wittig, J. E.

doi:10.1016/j.msea.2017.11.017

Cited by 89 publications

(24 citation statements)

References 57 publications

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“…25-sample exhibited the highest UTS (905 MPa) and a good plasticity with the TEL of 55%, and a rapid increase in the n value in S 2 (see Figure 2a), because of strain induced martensitic transformation (TRIP effect) and strain induced deformation twinning (TWIP effect) (see Figure 3, Figure 5a, and Figure 7a,b). The formation of martensite and deformation twins act as planar obstacles to dislocation glide during deformation and enhanced the n values (high work hardening rate), delayed necking, which improves the plasticity of the experimental steel and results in highest UTS [2,3,18,34]. It should be also noted that the increase of n value of 25-sample exceeded other samples (see Figure 2).…”

Section: Tensile Properties Difference At Different Temperaturesmentioning

confidence: 89%

“…The mechanical properties and deformation mechanisms of TRIP/TWIP steels exhibit a strong dependence on temperature and stacking fault energy (SFE) [8,18]. It is well established that the main governing factor responsible for the deformation mechanism in TRIP/TWIP steels is the SFE [19] and the SFE increased with the increased of temperature [7,20].…”

Section: Introductionmentioning

confidence: 99%

“…When the SFE increases from~18 to 45 mJm −2 , deformation-induced twinning occurs [21,22]. When SFE exceeds 45 mJm −2 , dislocation glide controls the work hardening [18,21]. The study of SFE for specific plasticity mechanisms is important because deformation mode can affect the mechanical properties of materials or result in deleterious effects.…”

Section: Introductionmentioning

confidence: 99%

“…A few studies were devoted to TRIP/TWIP steels deformed at different temperatures [7,18,22,24]. Linderov et al [7] investigated the deformation mechanisms of austenitic TRIP/TWIP steels at two different temperatures-ambient and 373 K (100 • C)-and observed that the temperature strongly affects the deformation-induced processes of metastable austenitic steels.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

Effect of Deformation Temperature on Mechanical Properties and Deformation Mechanisms of Cold-Rolled Low C High Mn TRIP/TWIP Steel

Tang

Huang

Ding

et al. 2018

Metals

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The microstructure and mechanical properties of cold-rolled Fe-18Mn-3Al-3Si-0.03C transformation induced plasticity/twinning induced plasticity (TRIP/TWIP) steel in the temperature range of 25 to 600 • C were studied. The experimental steel exhibited a good combination of ultimate tensile strength (UTS) of 905 MPa and total elongation (TEL) of 55% at room temperature. With the increase of deformation temperature from 25 to 600 • C, the stacking fault energy (SFE) of the experimental steel increased from 14.5 to 98.8 mJm −2. The deformation mechanism of the experimental steel is controlled by both the strain induced martensite formation and strain induced deformation twinning at 25 • C. With the increase of deformation temperature from 25 to 600 • C, TRIP and TWIP effect were inhibited, and dislocation glide gradually became the main deformation mechanism. The UTS decreased monotonously from 905 to 325 MPa and the TEL decreased (from 55 to 36%, 25-400 • C) and then increased (from 36 to 64%, 400-600 • C). The change in mechanical properties is related to the thermal softening effect, TRIP effect, TWIP effect, DSA, and dislocation slip.

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Section: Tensile Properties Difference At Different Temperaturesmentioning

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Deformation Temperature on Mechanical Properties and Deformation Mechanisms of Cold-Rolled Low C High Mn TRIP/TWIP Steel

Tang

Huang

Ding

et al. 2018

Metals

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“…The complete dissipation of strain energy generated in the deformed sample to the atmosphere takes time, resulting in the rise of local temperature of the material. Benziing 28) found that the mechanical properties of TWIP steel are seriously affected by the adiabatic temperature rise (∆T) during the dynamic deformation: 1) Where, h = 0.9 is the coefficient of transformation of plastic work into heat energy, ρ = 7.8 g/cm 3 is the density of steel, C = 0.46 kJ/(kg•K) is the specific heat capacity, σ is the true stress corresponding to the true strain. According to the above formula, the ΔT value of the TWIP steel at different strain rates can be calculated, as shown in Table 1.…”

Section: Deformation Mechanism At the High Strain Ratementioning

confidence: 99%

Effects of Strain Rate on the Deformation Mechanism of Ultra-high Strength TWIP Steel

Pang

Guo

et al. 2020

ISIJ Int.

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Effect of heat treatment on microstructure and pseudoelasticity of a memory‐steel

Mohri,

Leinenbach,

Lignos

et al. 2023

ce papers

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The pseudoelasticity behavior of memory‐steels has recently gained attention for applications in seismic‐resistant structures. The pseudoelasticity can be used to reduce residual deformations in building structures subjected to seismic loading. Fe‐based shape memory alloys (Fe‐SMA), which is also called as memory‐steel, have gained much attention because of their strong shape memory behavior and low material manufacturing cost, which justify their large‐scale application in construction. This research investigated the effects of heat treatment on microstructure and pseudoelasticity of a memory‐steel (Fe‐17Mn‐5Si‐10Cr‐4Ni‐1(V,C) %wt.). Various solution‐annealing treatments from 1000 to 1200 °C for 2 h and aging from 650, 750 and 850 °C were applied to investigate the microstructural evolution and pseudoelasticity behavior of the alloy. The results showed that increasing the solution annealing temperature caused grain growth and pseudoelasticity loss. On the other hand, the precipitation of (Cr,V)Cs after aging resulted in an improved pseudo‐elasticity. The large elastic strain field, which forms near the carbide precipitates, improves the pseudoelasticity. Furthermore, precipitates can provide preferential nucleation sites for the martensite phase and a high density of stacking faults in the austenite matrix. The study concludes that the best pseudoelasticity behavior was achieved after an aging at 750°C for 6 h.

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Effects of strain rate on mechanical properties and deformation behavior of an austenitic Fe-25Mn-3Al-3Si TWIP-TRIP steel

Cited by 89 publications

References 57 publications

Effect of Deformation Temperature on Mechanical Properties and Deformation Mechanisms of Cold-Rolled Low C High Mn TRIP/TWIP Steel

Effect of Deformation Temperature on Mechanical Properties and Deformation Mechanisms of Cold-Rolled Low C High Mn TRIP/TWIP Steel

Effects of Strain Rate on the Deformation Mechanism of Ultra-high Strength TWIP Steel

Effect of heat treatment on microstructure and pseudoelasticity of a memory‐steel

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