Influence of the Microalloying Elements on the Temporary Inhibition of Static Recrystallization by Strain-Induced Precipitates

Gómez, Manuel; Quispe, Alberto; Medina, Sebastián F.

doi:10.1002/srin.201300356

Cited by 8 publications

(4 citation statements)

References 26 publications

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“…In case of micro-alloyed steel, this effect is experimentally well analyzed for the case of carbo-nitrides forming with minor additions of Al, V, Ti, and Nb. [2] In addition to Zener pinning, the grain boundary mobility can also be drastically influenced by the solute drag effect. [3] In this case, elements that are segregated into the grain boundary must be ''dragged along'' with the moving boundary, thus exerting a retarding effect on the movement.…”

Section: Introductionmentioning

confidence: 99%

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A Model for Static Recrystallization with Simultaneous Precipitation and Solute Drag

Buken

Kozeschnik

2016

Metall Mater Trans A

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In the present work, we introduce a state parameter-based microstructure evolution model, which incorporates the effect of solute atoms and precipitates on recrystallization kinetics. The model accounts for local precipitate coarsening at grain boundaries, which promotes an average grain boundary movement even if the Zener pinning force exceeds the driving force for recrystallization. The impact of solute drag on the grain boundary mobility as well as simultaneous precipitation is discussed in detail. The model is validated on experimental data on recrystallization in V-micro-alloyed steel, where excellent agreement is achieved.

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Section: Introductionmentioning

confidence: 99%

“…On one hand, Medina and co-workers [2,5] utilize a phenomenological approach based on the Avrami model. [6] In this approach, the impact of precipitation on recrystallization is described by means of two coupled Avrami equations.…”

Section: Introductionmentioning

confidence: 99%

A Model for Static Recrystallization with Simultaneous Precipitation and Solute Drag

Buken

Kozeschnik

2016

Metall Mater Trans A

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“…Thus, these authors identify no direct relation between softening and recrystallized fractions in their consideration of simultaneous precipitation and recrystallization, which is supported by the key experiments of Llanos et al [29,30] and Kang et al [31]. On the other hand, Medina and coworkers [32] directly relate the measured softening plateaus as calculated by their back extrapolation method to recrystallized fractions even if precipitation interacts with recrystallization. This method is experimentally confirmed for a significant amount of softening data, where metallographic measurements have been made directly in the plateau regions of V and Nb alloyed steel.…”

Section: Simulation Results and Discussionmentioning

confidence: 93%

A state parameter-based model for static recrystallization interacting with precipitation

Buken

Sherstnev

Kozeschnik

2016

Modelling Simul. Mater. Sci. Eng.

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In the present work, we develop a state parameter-based model for the treatment of simultaneous precipitation and recrystallization based on a single-parameter representation of the total dislocation density and a multi-particle multi-component framework for precipitation kinetics. In contrast to conventional approaches, the interaction of particles with recrystallization is described with a non-zero grain boundary mobility even for the case where the Zener pressure exceeds the driving pressure for recrystallization. The model successfully reproduces the experimentally observed particle-induced recrystallization stasis and subsequent continuation in micro-alloyed steel with a single consistent set of input parameters. In addition, as a state parameter-based approach, our model naturally supports introspection into the physical mechanisms governing the competing recrystallization and recovery processes.

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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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Influence of the Microalloying Elements on the Temporary Inhibition of Static Recrystallization by Strain-Induced Precipitates

Cited by 8 publications

References 26 publications

A Model for Static Recrystallization with Simultaneous Precipitation and Solute Drag

A Model for Static Recrystallization with Simultaneous Precipitation and Solute Drag

A state parameter-based model for static recrystallization interacting with precipitation

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

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