Influence of Temperature and Strain Rate on Tensile Deformation and Fracture Behavior of P92 Ferritic Steel

Choudhary, B.K.; Samuel, E. Isaac; Sainath, G.; Christopher, J.; Mathew, M.D.

doi:10.1007/s11661-013-1869-6

Cited by 45 publications

(34 citation statements)

References 38 publications

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“…[1]. In a similar fashion, Choudhary et al [34] report the efficacy of an annealing treatment to a 9Cr-1Mo ferritic steel to precipitate and coarsen Cr-carbides and nitrides. Choudhary et al found that by coarsening the carbides and nitrides the magnitude of serrations was reduced and the critical strain for DSA was increased.…”

Section: Discussionmentioning

confidence: 86%

“…For ferritic grades of steel, the formation of a carbide can act as a sink for C and subsequently reduces the appearance of DSA. [31][32][33][34] Vankadesan et al [35] observed that increasing the Ti: (C, N) ratio from 3.6 to 5.3 lead to an increase in the activation energy for the onset of DSA from 85 to 121 kJ/mol. The work of Cuddy and Leslie [36] showed that for ferritic steels containing 0.005 wt pct C the addition of 0.44 wt pct Ti lead to a higher temperature range at which DSA was observed.…”

Section: Microstructural Features To Control Dsamentioning

confidence: 99%

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Dynamic Strain Aging Phenomena and Tensile Response of Medium-Mn TRIP Steel

Field

Aken

2018

Metall Mater Trans A

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Dynamic strain aging (DSA) and rapid work hardening are typical behaviors observed in medium-Mn transformation-induced plasticity (TRIP) steel. Three alloys with manganese ranging from 10.2 to 13.8 wt pct with calculated room temperature stacking fault energies varying from À 2.1 to 0.7 mJ/m 2 were investigated. Significant serrations were observed in the stress-strain behavior for two of the steels and the addition of 4.6 wt pct chromium was effective in significantly reducing the occurrence of DSA. Addition of chromium to the alloy reduced DSA by precipitation of M 23 (C,N) 6 during batch annealing at 873 K (600°C) for 20 hours. Three distinct DSA mechanisms were identified: one related to manganese ordering in stacking faults associated with e-martensite and austenite interface, with activation energies for the onset and termination of DSA being 145 and 277 kJ/mol. A second mechanism was associated with carbon diffusion in c-austenite where Mn-C bonding added to the total binding energy, and activation energies of 88 and 155 kJ/mol were measured for the onset and termination of DSA. A third mechanism was attributed to dislocation pinning and unpinning by nitrogen in a-ferrite with activation energies of 64 and 123 kJ/mol being identified. Tensile behaviors of the three medium manganese steels were studied in both the hot band and batch annealed after cold working conditions. Ultimate tensile strengths ranged from 1310 to 1404 MPa with total elongation of 24.1 to 34.1 pct. X-ray diffraction (XRD) was used to determine the transformation response of the steels using interrupted tensile tests at room temperature. All three of the processed steels showed evidence of two-stage TRIP where c-austenite first transformed to e-martensite, and subsequently transformed to a-martensite.

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Section: Discussionmentioning

confidence: 86%

Section: Microstructural Features To Control Dsamentioning

confidence: 99%

Dynamic Strain Aging Phenomena and Tensile Response of Medium-Mn TRIP Steel

Field

Aken

2018

Metall Mater Trans A

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“…Specimen blanks were subjected to normalising at 1338 K for 2 h followed by air cooling and tempering at 1053 K for 2 h followed by air cooling. Microstructure of P92 steel in the normalised and tempered (N þ T) condition was composed of tempered lath martensite and precipitates along the lath boundaries and prior austenite grain boundaries [24]. The intralath matrix regions contained fine precipitates [24].…”

Section: Experimental and Analysis Of Datamentioning

confidence: 99%

“…Microstructure of P92 steel in the normalised and tempered (N þ T) condition was composed of tempered lath martensite and precipitates along the lath boundaries and prior austenite grain boundaries [24]. The intralath matrix regions contained fine precipitates [24]. Button head cylindrical specimens of 26 mm gauge length and 4 mm gauge diameter were machined from the specimen blanks.…”

Section: Experimental and Analysis Of Datamentioning

confidence: 99%

Applicability of Voce equation for tensile flow and work hardening behaviour of P92 ferritic steel

Sainath

Choudhary

Christopher

et al. 2015

International Journal of Pressure Vessels and Piping

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“…[11][12][13][14][15] An et al [16] analyzed the creep behavior of different regions in P92 steel welded joint, results showed that fine-grained heat-affected zone had the highest creep strain rate. In [ addition, the influence of temperature and strain rate on tensile deformation and fracture of P92 steel were investigated by Choudhary et al [17] In order to better understand the mechanical and microstructural stability of P92 steel under uniaxial tension, Giroux et al [1] studied the phenomena of necking, damage, and grain size evolution. However, few studies are related to the LCF behavior of new ferritic P92 steel.…”

Section: Introductionmentioning

confidence: 99%

Characterization of Low Cycle Fatigue Performance of New Ferritic P92 Steel at High Temperature: Effect of Strain Amplitude

Wang

Gong

Zhao

et al. 2015

steel research int.

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Low cycle fatigue (LCF) tests were performed at various strain amplitudes ranging from 0.2 to 0.8% to investigate the effects of strain amplitude on cyclic softening behavior and LCF lifetime of new ferrtic P92 steel. LCF tests were conducted under strain controlled in fully reversed manner with strain rate of 1.0 Â 10 À3 s À1 at high temperature of 650 8C. A novel fatigue life end criterion was adopted in this analysis. The effects of strain amplitude on the cyclic softening behavior, the evolution of plastic strain amplitude, hysteresis loop area and the fatigue life were discussed. Similar softening curves were achieved except for the strain amplitude of 0.2%. The evolution of hysteresis loop areas at the smaller strain range amplitude (less than 0.4%) is contrary to the larger ones. A modified life prediction model was proposed based on Coffin-Manson model and energy-based model, comparison of predicted lifetime and experimental data shows that the model gives a good estimation. In order to better understand the basic stress-strain behavior, time-independent cyclic plasticity model was used to represent the cyclic mechanical behavior of this steel. Comparison of the simulated and experimental results shows that the proposed model can give a reasonable prediction of stress-strain hysteresis loop for P92 steel at high temperature.

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Influence of Temperature and Strain Rate on Tensile Deformation and Fracture Behavior of P92 Ferritic Steel

Cited by 45 publications

References 38 publications

Dynamic Strain Aging Phenomena and Tensile Response of Medium-Mn TRIP Steel

Dynamic Strain Aging Phenomena and Tensile Response of Medium-Mn TRIP Steel

Applicability of Voce equation for tensile flow and work hardening behaviour of P92 ferritic steel

Characterization of Low Cycle Fatigue Performance of New Ferritic P92 Steel at High Temperature: Effect of Strain Amplitude

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