Modeling the Flow Curve of AISI 410 Martensitic Stainless Steel

Momeni, Amir; Dehghani, K.; Heidari, Mojtaba; Vaseghi, Majid

doi:10.1007/s11665-012-0172-9

Cited by 20 publications

(7 citation statements)

References 20 publications

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“…The typical form of the DRX flow curve is observed at high temperatures and low strain rates. At high strain rates, deformation decelerates the rate of work softening (Momeni et al, 2012). Other researchers (Ferdowsi et al, 2014;Mirzadeh, Cabrera, and Najafizadeh, 2012) also point out that higher temperatures and lower strain rates promote the softening process by increasing the mobility of grain boundaries and providing a longer time for dislocation annihilation and the occurrence of DRX.…”

Section: Flow Curves Analysismentioning

confidence: 95%

“…Thus, it is becoming increasingly important to be able to calculate the flow stress for specific values of strain, strain rate, and temperature. To model the flow curve up to the peak stress, the flow curve model proposed by Cingara and McQueen can be used (Momeni et al, 2012): [19] where is stress (MPa), p is the peak stress (MPa), is strain, p is the peak strain, and C is the material constant.…”

Section: Flow Curve Modelling Up To Peak Stressmentioning

confidence: 99%

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Characterization of hot deformation behaviour of Nb-Ti microalloyed high-strength steel

Zhang

2019

J. S. Afr. Inst. Min. Metall.

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The hot deformation behaviour of Nb-Ti microalloyed high-strength steel was investigated. Hot compression tests were conducted in the temperature range 900 to 1100°C under strain rates of 0.1, 1, and 5 s-1. Dynamic recrystallization (DRX) occurs as the main flow softening mechanism at high temperature and low strain rate. The hot deformation activation energy was calculated to be about 404 699 J/mol. The constitutive equation was developed to describe the relationship between peak stress, strain rate, and deformation temperature. The characteristics of DRX at different deformation conditions were extracted from the stressstrain curves using the work hardening parameter. The Cingara-McQueen equation was developed to predict the flow curves up to the peak strain. The processing maps were obtained on the basis of a dynamic materials model. The results predict an instability region in the temperature range 1010 to 1100°C when the strain rate exceeds 0.78 s-1 .

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Section: Flow Curves Analysismentioning

confidence: 95%

Section: Flow Curve Modelling Up To Peak Stressmentioning

confidence: 99%

Characterization of hot deformation behaviour of Nb-Ti microalloyed high-strength steel

Zhang

2019

J. S. Afr. Inst. Min. Metall.

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“…The total dissipated power P absorbed by the workpiece can be divided into two parts, the content G for temperature rise and the co-content J for microstructure dissipation. The total dissipated power can be described as: The ideal power dissipation J max occurs when m equals 1.0 in equation (26). The parameter h, which represents the power dissipation efficiency, is calculated by:…”

Section: Processing Maps In Hot Deformationmentioning

confidence: 99%

“…Therefore, the physical-based two-stage constitutive model was proposed to describe the hardening, softening and steady behavior in different stages of the true stress-true strain curves. The researches in literatures exihibit the good applicability and higher accuracy of the two-stage physical-based constitutive model for various kinds of alloys, including the Ni-based superalloys [20,21], steels [22][23][24][25], etc In addition, the hot flow stress behavior of martensitic steels(AISI 410 [26], 2Cr11Mo1VNbN [27], FB2 rotor steel [28], etc) were described by the two-stage physical-based model in the literatures, and the characteristics of the flow stress were captured. Although the physical-based model has been used in several kinds of alloys, researches are still lack in analying the hot deformation behavior of 05Cr17Ni4Cu4Nb martensitic stainless steel.…”

Section: Introductionmentioning

confidence: 99%

Flow stress modeling, processing maps and microstructure evolution of 05Cr17Ni4Cu4Nb Martensitic stainless steel during hot plastic deformation

Zhou

Feng

et al. 2020

Mater. Res. Express

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The hot deformation behavior of 05Cr17Ni4Cu4Nb stainless steel at the temperatures from 950°C to 1250°C and strain rates from 0.01 s −1 to 5 s −1 was investigated on the basis of test data obtained by Gleeble1500D thermo-simulation machine. A two-stage flow stress constitutive model incorporating the effects of the strain rate and temperature on the deformation behavior is proposed. The stressstrain relations of 05Cr17Ni4Cu4Nb steel predicted by the proposed model agree well with the experimental results. Moreover, the hot processing maps are also investigated. Combined with the microstructure evolution analysis, the appropriate hot forming processing parameters of 05Cr17Ni4-Cu4Nb steel is proposed in the temperature range of 1000-1100°C and strain rate range of 0.01-0.02 s −1 .

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“…The dislocation density continues to increase, resulting in work hardening and increasing stress [24,25]. When the curve reaches the peak value, the curve shows a pronounced downward trend, which indicates that the degree of softening, such as the dynamic recrystallization mechanism and dynamic recovery mechanism, is greater than that of work hardening [26]. The obvious downward trend can be seen with the deformation conditions of a temperature of 1000 • C and a strain rate of 0.1 s −1 .…”

Section: Flow Curves Of X12crmowvnbn10-1-1 Alloy Steelmentioning

confidence: 99%

Hot Workability of Ultra-Supercritical Rotor Steel Using a 3-D Processing Map Based on the Dynamic Material Model

Chen

Lian

et al. 2020

Materials

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As a new-type of ultra-supercritical HI-IP rotor steel, X12CrMoWVNbN10-1-1 alloy steel has excellent integrative performance, which can effectively improve the power generation efficiency of the generator set. In this paper, uniaxial thermal compression tests were carried out over a temperature range of 950–1200 °C and strain rates of 0.05–5 s−1 with a Gleeble-1500D thermal simulation testing machine. Moreover, based on hot compression experimental data and the theory of processing diagrams, in combination with the dynamic material model, a three-dimensional (3-D) thermal processing map considering the effect of strain was constructed. It was concluded that optimum thermal deformation conditions were as follows: the temperature range of 1150–1200 °C, the strain rate range of 0.05–0.634 s−1. Through secondary development of the finite element (FE) software FORGE®, three-dimensional thermal processing map data were integrated into finite element software FORGE®. The distributions of instability coefficient and power dissipation coefficient were obtained over various strain rates and temperatures of the Ø 8 × 12 mm cylinder specimen by using finite element simulation. It is shown that simulation results are consistent with the microstructure photos. The method proposed in this paper, which integrates the three-dimensional processing map into the finite element software FORGE® (Forge NxT 2.1, Transvalor, Nice, France), can effectively predict the formability of X12CrMoWVNbN10-1-1 alloy steel.

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Modeling the Flow Curve of AISI 410 Martensitic Stainless Steel

Cited by 20 publications

References 20 publications

Characterization of hot deformation behaviour of Nb-Ti microalloyed high-strength steel

Characterization of hot deformation behaviour of Nb-Ti microalloyed high-strength steel

Flow stress modeling, processing maps and microstructure evolution of 05Cr17Ni4Cu4Nb Martensitic stainless steel during hot plastic deformation

Hot Workability of Ultra-Supercritical Rotor Steel Using a 3-D Processing Map Based on the Dynamic Material Model

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