Effects of Carbides on the Microstructural Evolution in Sub-micron Grain 9310 Steel During Isothermal Heat Treatment

Kozmel, Thomas; Tin, Sammy

doi:10.1007/s11661-015-2884-6

Cited by 6 publications

(2 citation statements)

References 45 publications

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“…Recovery in regions with low recrystallization tendency can further amplify the differences in stored energy, even to such an extent that only partial recrystallization occurs. Other factors retarding or hampering recrystallization include grain boundary pinning due to second phase particles [10,25], impurity drag due to solute decoration of the grain boundaries and the limited mobility of grain boundary junctions [11].…”

Section: Introductionmentioning

confidence: 99%

Site-specific quasi in situ investigation of primary static recrystallization in a low carbon steel

Diehl

Kertsch

Τράκα

et al. 2019

Materials Science and Engineering: A

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Low-alloyed steels with body-centered cubic crystal structure are a material class that is widely used for sheet metal forming applications. When having an adequate crystallographic texture and grain morphology, their mechanical behavior is characterized by an isotropic in-plane flow behavior in combination with a low yield strength. The decisive processing steps for obtaining these beneficial mechanical properties are cold rolling and subsequent annealing. While for the former the number of passes, the deformation rates, and the total thickness reduction are the main processing parameters, the latter is described mainly by the heating rate and the holding temperature and time. Primary static recrystallization during annealing subsequent to the cold rolling process alters mainly two aspects of the material state: It firstly replaces the elongated and heavily deformed grains of the cold rolled microstructure by small, globular grains with low dislocation density and secondly it changes the crystallographic texture insofar as it typically diminishes the α-and strengthens the γ-fiber texture components. In the present work, the recrystallization behavior of a commercial non-alloyed low carbon steel is studied. A quasi in situ setup that enables site-specific characterization is employed to gain a local picture of the nucleation and recrystallization process. From the Kernel Average Misorientation (KAM) values of the deformation structure, the tendency to be consumed by new grains can be predicted. Crystallographic analysis shows that the most deformed regions have either a γ-fiber orientation or belong to heavily fragmented shear band regions. New grains nucleate especially in such highly deformed regions and inherit often the orientation from the deformation microstructure.

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Section: Introductionmentioning

confidence: 99%

Site-specific quasi in situ investigation of primary static recrystallization in a low carbon steel

Diehl

Kertsch

Τράκα

et al. 2019

Materials Science and Engineering: A

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“…Thus, it is desirable to homogeneously disperse nanoscale cementite in the matrix of steel. In recent years, precipitation behavior of cementite has been given significant attention [8][9][10][11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Modeling the Precipitation Kinetics of Cementite in Bainite in 0.17% Carbon Steel

Yang

Wang

et al. 2017

MSF

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Nanoscale cementite can be obtained in 0.17% carbon steel during isothermal treatment at 500oC after ultra fast cooling (UFC) and thermo-mechanical treatment. The precipitation strengthening contribution to yield strength was more than 250 MPa, when the heat treatment time was less than 20 min. The carbon diffusion is impacted by Mn and Si, which are redistributed during the precipitation process. All the effects induced by substitutional elements can be manifested through the restricted carbon diffusion, which is equal to the carbon diffusion multiplied by adjustable parameters. Based on this, a kinetic model has been adapted to simulate the precipitation behaviors of cementite involving the evolution of the number density per unit volume, radius of cementite over time, and the evolution of carbon concentration in matrix. An excellent agreement in mean radius of particles between the predictions of the model and experimental observations was obtained. It was found that the nucleation period of cementite was very short and did not exceed 0.2 s, and there was an overlap between the nucleation period and the growth period, and the coarsening period began at about 1s. In the growth stage, the carbon concentration in the matrix dropped rapidly and the mean radius of particles increased quickly. In the coarsening stage, the carbon concentration remained unchanged and the number of particles per unit volume fell sharply.

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Effect of Heat Treatment Process on Microstructure and Crystallography of 20CrMnTiH Spur Bevel Gear

Hua

Han

et al. 2020

J. of Materi Eng and Perform

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Effects of Carbides on the Microstructural Evolution in Sub-micron Grain 9310 Steel During Isothermal Heat Treatment

Cited by 6 publications

References 45 publications

Site-specific quasi in situ investigation of primary static recrystallization in a low carbon steel

Site-specific quasi in situ investigation of primary static recrystallization in a low carbon steel

Modeling the Precipitation Kinetics of Cementite in Bainite in 0.17% Carbon Steel

Effect of Heat Treatment Process on Microstructure and Crystallography of 20CrMnTiH Spur Bevel Gear

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