Study on hot deformation behavior of AISI 414 martensitic stainless steel using 3D processing map

Chegini, M.; Aboutalebi, M.R.; Seyedein, S.H.; Ebrahimi, Ghanbar; Jahazi, Mohammad

doi:10.1016/j.jmapro.2020.05.008

Cited by 29 publications

(7 citation statements)

References 45 publications

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“…The activation energy for hot deformation of the steel deformed at 850-1200 °C and 0.01-10 s À1 is 380.49 kJ mol À1 , and the hot deformation constitutive equation is established as ε ¼ 1.33 Â 10 15 ½sinhð0.0081σÞ 5.96 expðÀ380486=RTÞ (18) The hot working maps were obtained for the steel at different strains. The power dissipation ratio η increases at higher deformation temperatures and strain rates.…”

Section: Discussionmentioning

confidence: 99%

Hot Deformation Behavior of a Marine Engineering Steel for Novel 980 MPa Grade Extra‐Thick Plate

Wang,

Ren,

Liu

et al. 2024

steel research int.

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The hot deformation behavior of a marine engineering steel for a novel 980 MPa grade extra‐thick plate is investigated through hot compression tests at temperatures of 850–1200 °C and strain rates of 0.01–10 s−1. The flow stress curves are corrected to eliminate the effects of friction on the flow stress, and a modified constitutive model is established to accurately quantify the flow behaviors of the steel. Hot working maps of the steel are derived by using a dynamic materials model and the Prasad instability criterion. The effects of the deformation parameters on the dynamic recrystallization (DRX) nucleation mechanisms are evaluated using scanning electron microscopy and electron backscatter diffraction. The flow stress and peak strain increased with decreasing deformation temperature and increasing strain rate, respectively. The activation energy for hot deformation after friction correction is 380.49 kJ mol−1. The DRX mechanism involves the migration of subgrains. The deformation parameters are optimized by combining the degree of DRX and the size of recrystallized grain. The optimum hot working window is determined as 1100–1200 °C and 0.1–10 s−1.

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Section: Discussionmentioning

confidence: 99%

Hot Deformation Behavior of a Marine Engineering Steel for Novel 980 MPa Grade Extra‐Thick Plate

Wang,

Ren,

Liu

et al. 2024

steel research int.

View full text Add to dashboard Cite

show abstract

“…However, for many alloys, strain has a greatly affect on microstructure evolution. The traditional 2D hot processing map only represents the power dissipation value, and the instability area distribution in the 2D space, composed of strain rate and temperature under a certain strain, loses sight of the influence of strain on formability; therefore, the formability of materials cannot be comprehensively characterized [ 16 ]. Therefore, many scholars began to explore the establishment of a 3D hot processing map, considering the effect of strain on the basis of 2D hot processing map.…”

Section: Introductionmentioning

confidence: 99%

Hot Formability Study of Cr5 Alloy Steel by Integration of FEM and 3D Processing Maps

Chen

Bai

et al. 2022

Materials

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Microstructure is an important factor that affects the mechanical properties and service life of forgings. Through the full study of the formability of the material, the internal microstructure of the material can be effectively controlled. In order to accurately describe the formability of materials during thermal processing, 3D hot processing maps containing strains were established in this paper, and the 3D hot processing maps were coupled with the finite element method for simulation calculation. The Cr5 alloy steel was subjected to unidirectional thermal compression at a strain rate of 0.005–5 s−1 and temperature range of 900–1200 °C on a Gleeble-1500D thermal simulation machine, in order to obtain the date of true stress and strain. Based on the dynamic material model (DMM), the 3D processing maps of Cr5 alloy steel was established, and the 3D processing maps were associated with the analysis of microstructure evolution during hot deformation. The results show that the optimum thermal deformation conditions are as follows: temperature of 1000–1125 °C, strain rate of 0.01–0.2 s−1, and peak power dissipation of 0.41. The 3D processing maps were coupled with the finite element software FORGE® to simulate the hot working process, and the distribution and change of power dissipation and flow instability domain on the metal deformation under different thermal deformation conditions were obtained. The comparison between the simulation results and metallographic images of typical regions of metal deformation shows that they are in good agreement. This method can effectively predict and analyze the formability of materials during hot processing and provide guidance for practical industrial production.

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“…Due to the limitation of the atomic model, the processing map (dynamic material model) based on Prasad dynamic material model [ 25 ] and Murty instability criterion [ 26 ] has been widely used in engineering. Based on the dynamic material model, scholars studied the instability characteristics of various metal materials such as aluminum alloy [ 27 ], magnesium alloy [ 28 ], titanium alloy [ 29 ], superalloy [ 30 ], and stainless steel [ 31 ] during hot deformation, and established the processing maps of various metal materials, which can be used to guide the selection and determination of reasonable thermal processing parameters.…”

Section: Introductionmentioning

confidence: 99%

Deformation Behavior and Constitutive Model of 34CrNi3Mo during Thermo-Mechanical Deformation Process

Jia

Zhou

2022

Materials

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With higher creep strength and heat resistance, 34CrNi3Mo has been widely used in the production of engine rotors, steam turbine impellers, and turbine blades. To investigate the hot deformation behaviors of 34CrNi3Mo steel, hot compressive tests were conducted on a Gleeble-3500 thermomechanical simulator, under the temperature range of 1073 K–1373 K and strain rate ranges of 0.1 s−1–20 s−1. The results show that the flow stress of 34CrNi3Mo steel under high temperatures is greatly influenced by the deformation temperature and strain rate, and it is the result of the interaction between strain hardening, dynamic recovery, and recrystallization. Under the same deformation rate, as the deformation temperature increases, the softening effect of dynamic recrystallization and dynamic recovery gradually increases, and the flow stress gradually decreases. Under the same deformation temperature, with the increase of strain rate, the influence of strain hardening on 34CrNi3Mo steel is gradually in power, and the flow stress gradually increases. To predict the flow stress of 34CrNi3Mo steel accurately, a modified Arrhenius-type constitutive model considering the effects of strain, temperature, and strain rate at the same time was made based on the experiment data. On this basis, the evolution law of deformation activation and instability characteristics of 34CrNi3Mo steel were investigated, and the processing map of 34CrNi3Mo steel was established. The formability of 34CrNi3Mo steel under high temperature deformation was revealed, which provided a theoretical foundation of the equation of reasonable hot working process.

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Study on hot deformation behavior of AISI 414 martensitic stainless steel using 3D processing map

Cited by 29 publications

References 45 publications

Hot Deformation Behavior of a Marine Engineering Steel for Novel 980 MPa Grade Extra‐Thick Plate

Hot Deformation Behavior of a Marine Engineering Steel for Novel 980 MPa Grade Extra‐Thick Plate

Hot Formability Study of Cr5 Alloy Steel by Integration of FEM and 3D Processing Maps

Deformation Behavior and Constitutive Model of 34CrNi3Mo during Thermo-Mechanical Deformation Process

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