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Tavares, Sérgio Souto Maior; Lafuente, Ángel; Miraglia, S.; Fruchart, D.

doi:10.1023/a:1014948831730

Cited by 10 publications

(6 citation statements)

References 8 publications

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“…However, these results 12 were not in agreement with those obtained in the present study, probably because of the differences in the different chemical compositions of the two steels. In addition to containing Mn and Al, the steel investigated in the present study also had a considerably high Si content.…”

Section: Resultscontrasting

confidence: 99%

“…Another factor that could have had an effect on the final microstructure was the duration of the annealing treatment. The annealing period used by Tavares et al 12 was twice as long as that used in the present study.…”

Section: Resultsmentioning

confidence: 92%

“…Tavares et al 12 analyzed a 17Mn-2Al steel and found that samples of the steel cold rolled with reductions of 27.5 to 94.8% and subsequently annealed at 800°C exhibited a fully austenitic structure. However, these results 12 were not in agreement with those obtained in the present study, probably because of the differences in the different chemical compositions of the two steels.…”

Section: Resultsmentioning

confidence: 99%

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Microstructural characterization and mechanical behavior of a low-carbon 17%Mn steel

Spindola

Dafé

Carmo³

et al. 2014

Mat. Res.

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Steels containing high levels of Mn, Si and Al exhibit high plasticity when deformed, owing to twinning-induced plastitity (TWIP) and transformation-induced plasticity (TRIP) effects. In this study, we investigated the microstructural evolution of samples of samples of a 17%Mn steel subjected to war rolling at 700° and 800°C. We also studied the effects of the microstructure of the steel samples on their mechanical behavior. Using a mathematic model the stacking fault energy of the steel was estimated to be 14.5 mJ/m 2 . This value was indicative of a martensitic transformation. The presence of martensite and twinned austenite was verified using optical microscopy, scanning electron microscopy (SEM) and electron backscatter diffraction (EBSD) analyses. The presence of austenite and ε-and α'-martensites was confirmed using X-ray diffraction (XRD) analyses and dilatometry. Increasing the rate of cold reduction resulted in the formation of a α'-martensite phase and a decrease in the volume fraction of the ε-martensite phase. The volume fractions of the various phases were measured by integrating the areas under the XRD peaks. The sample subjected to a cold-rolling reduction of 81% and a subsequent annealing treatment did not contain a α'-martensite phase, indicating that it was fully recrystallized. The Vickers microhardness of the samples increased with an increase in the cold-rolling reduction rate. However, the microhardness values of the cold-rolled samples decreased after the annealing treatment.

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Section: Resultscontrasting

confidence: 99%

Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

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Microstructural characterization and mechanical behavior of a low-carbon 17%Mn steel

Spindola

Dafé

Carmo³

et al. 2014

Mat. Res.

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“…It seems that the temperature range of -martensite reversion depends slightly on the degree of deformation. A temperature range similar to that of -martensite reversion, i.e., 300-450C was found for Fe -17 wt% Mn -1.9 wt% Al -0.1 wt% C alloy [14]. In both cases, the temperature range is higher than that usually observed in SSs [18].…”

Section: Methodssupporting

confidence: 66%

“…Formation of ferrite was reported for Fe -17 wt% Mn -1.9 wt% Al -0.1 wt% C alloy, which has also low concentration of carbon. After annealing in higher temperature range, i.e., 450-750C, large amount of ferrite is formed [14]. The origin of a few small peaks that are not indexed can be iron or manganese oxides.…”

Section: Methodsmentioning

confidence: 99%

Positron annihilation studies of high-manganese steel deformed by rolling

2015

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Abstract. Positron annihilation spectroscopy (PAS) has been used to study the annealing behavior of cold rolled Fe -21 wt% Mn steel with 0.05 wt% C. After the initial annealing of defects shown by Doppler broadening of the annihilation line, a slight increase in the annihilation line shape parameter, i.e., the so-called S parameter and then its decrease in the temperature range between 225C and 450C indicates generation of new defects and their subsequent annealing. This temperature range coincides with X-ray diffraction measurements, which indicate reversion of deformation-induced -martensite. However, for annealing in this temperature range with slow cooling of the sample, the formation of ferrite already starts. The results are compared with our previous results for deformed austenitic stainless steel 1.4301 (EN) where only reversion of deformation-induced -martensite was detected.

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Microstructural Study of the Phase Transformations Upon Cooling to Room Temperature of High Mn Steels

Cheng

Lin

2012

Metall Mater Trans A

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Untitled

Cited by 10 publications

References 8 publications

Microstructural characterization and mechanical behavior of a low-carbon 17%Mn steel

Microstructural characterization and mechanical behavior of a low-carbon 17%Mn steel

Positron annihilation studies of high-manganese steel deformed by rolling

Microstructural Study of the Phase Transformations Upon Cooling to Room Temperature of High Mn Steels

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