Microstructural Evolution in Fe-22Mn-0.4C Twinning-Induced Plasticity Steel During High Strain Rate Deformation

Ha, Yumi; Kim, Hyunmin; Kwon, Ki Hyuk; Lee, Soon-Gi; Lee, Sunghak; Kim, Nack J.

doi:10.1007/s11661-014-2705-3

Cited by 22 publications

(10 citation statements)

References 16 publications

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“…Many individual dislocations without tangles could be clearly seen. This indicates the occurrence of dynamic recovery in these local areas due to the adiabatic heating in the dynamic tensile test [27][28][29].…”

Section: Microstructure Characterization Using Temmentioning

confidence: 87%

Dynamic tensile behavior of novel quenching-partitioning-tempering martensitic steel

Qin

Liu

et al. 2019

Heat Treatment and Surface Engineering

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A Fe-0.20C-1.49Mn1.52Si-0.58Cr-0.05Nb low-carbon steel was treated by a novel quenchingpartitioning-tempering (Q-P-T) process and the traditional quenching and tempering (Q&T) process for comparison, respectively. X-ray diffraction results indicate that there is 10.8% volume fraction of retained austenite (V RA ) in the Q-P-T martensitic steel, while no diffraction peak of retained austenite was detected in Q&T martensitic steel. The Q-P-T steel and the Q&T steel were subjected to a dynamic tensile test at a strain rate of 500 s −1 and a quasistatic tensile test at a strain rate of 5.6 × 10 −4 s −1 , respectively. The results indicate that the high strain rate in the dynamic tension raises the strength of the Q-P-T and Q&T steels compared with their quasi-static tensions owing to strain rate hardening effect, however, the elongation of Q-P-T steel decreases slightly, while the elongation of Q&T steel evidently increases. This difference is attributed that the existence of the dislocation absorption by the retained austenite (DARA) effect in quasi-static tension is suppressed under dynamic tensile loading so that the enhancement influence of DARA effect on ductility cannot be effectively compensated by the adiabatic softening of the martensitic matrix, which leads to a slight decrease in the elongation of the Q-P-T steel in dynamic tension compared with that in the quasi-static tension. While Q&T steel has no DARA effect in quasi-static tension due to no retained austenite, and thus the adiabatic softening of the martensitic matrix increases the ductility of Q&T steel in dynamic tension.

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Section: Microstructure Characterization Using Temmentioning

confidence: 87%

Dynamic tensile behavior of novel quenching-partitioning-tempering martensitic steel

Qin

Liu

et al. 2019

Heat Treatment and Surface Engineering

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“…In general, the studies on dynamic deformation of Fe-C-Mn-Al system steels were mainly focused on TRIP and TWIP steels [12][13][14][15]. Tang et al [12] studied the dynamic behavior of Fe-15Mn-3Al-0.23C TRIP/TWIP steel.…”

Section: Introductionmentioning

confidence: 99%

“…Curtze et al [14] indicated that adiabatic temperature increase led to a change in stacking fault energy, shifting γ SFE either towards or away from the optimum value for twinning. Ha et al [15] pointed out that under high strain rate deformation, there is a formation of nanostructure austenite in TWIP steel, due to the occurrence of deformation twinning forming nanoscale twin/matrix lamellae followed by dynamic recovery induced by adiabatic heating. However, up to date, there are relatively few studies on microband induced plasticity (MBIP) Fe-Mn-Al-C steels, especially in high strain rate conditions.…”

Section: Introductionmentioning

confidence: 99%

Strain rate effects on mechanical properties of Fe-10Mn-5Al-0.5C steel

He¹,

Yang²,

Zhu³

et al. 2020

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The tensile deformation behavior of Fe-10Mn-5Al-0.5C steel was studied in an extensive range of strain rate (0.001-1200 s −1). The results show that the steel has high strength (886 MPa) and plasticity (41 %) and exhibits excellent combinations of specific strength and ductility (> 36,000 MPa %) at the strain rate of 0.001 s −1. With the increase of strain rate from 0.001 to 1200 s −1 , the tensile strength of the steel was increased from 886 to 1015 MPa, while its elongation first decreased from 41 to 16 %, and then increased from 16 to 25 %. At the strain rate of 450 s −1 , the elongation is minimal, and the energy absorption capacity is the lowest. With the deformation progresses, the value of n increases from small to large, the strain hardening effect becomes high.

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“…In general, the studies on dynamic deformation of Fe‐C‐Mn‐Al system steels were mainly focused on high‐Mn twinning induced plasticity (TWIP) steels . With an increase in strain rate from 0.01 s −1 to 950 s −1 , the yield stress of Fe‐15Mn‐2Si‐2Al‐0.7 C twinning induced plasticity (TWIP) steel increased .…”

Section: Introductionmentioning

confidence: 99%

“…Adiabatic temperature increase led to change in stacking fault energy (SFE), shifting γ SFE either towards or away from the optimum value for twinning . Under high strain rate deformation there is a formation of nanostructure austenite in twinning induced plasticity (TWIP) steel, due to the occurrence of deformation twinning forming nanoscale twin/matrix lamellae followed by dynamic recovery induced by adiabatic heating . There are also some studies focused on medium‐manganese (Mn) transformation induced plasticity (TRIP) steels.…”

Section: Introductionmentioning

confidence: 99%

Strain rate effects on tensile deformation behavior of Fe‐3.5Mn‐0.3C‐5Al ferritic based lightweight steel

Yang

et al. 2020

Materialwissenschaft Werkst

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Tensile deformation behavior of Fe‐3.5Mn‐0.3C‐5Al ferritic based lightweight steel was studied in a large range of strain rate (0.001 s−1–1200 s−1). Microstructures of the steel before and after tension were observed. The results show that Fe‐3.5Mn‐0.3C‐5Al lightweight steel has a good strength (820 MPa) and plasticity (40 %) and exhibits excellent combinations of specific strength and ductility (>32000 MPa %) at the strain‐rate of 0.001 s−1 after annealing at 850 °C for 5 minutes then directly quenching into water. The austenite in the steel tested was transformed into α′‐martensite during the tensile deformation process. With an increase in strain rate from 0.001 s−1 to 1200 s−1, tensile strength of the steel investigated increased from 820 MPa to 932 MPa, while its elongation first decreased from 40 % to 15 %, and then increased from 15 % to 29 %. At the strain rate of 1200 s−1, adiabatic heating resulted in temperature rising in matrix, suppressed the transformation of austenite to α′‐martensite. Comparing with transformation induced plasticity steel, the austenite in 3.5Mn lightweight steel is obviously unstable and cannot provide progressive phase transition.

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Microstructural Evolution in Fe-22Mn-0.4C Twinning-Induced Plasticity Steel During High Strain Rate Deformation

Cited by 22 publications

References 16 publications

Dynamic tensile behavior of novel quenching-partitioning-tempering martensitic steel

Dynamic tensile behavior of novel quenching-partitioning-tempering martensitic steel

Strain rate effects on mechanical properties of Fe-10Mn-5Al-0.5C steel

Strain rate effects on tensile deformation behavior of Fe‐3.5Mn‐0.3C‐5Al ferritic based lightweight steel

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