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HomeMaterials Science ForumMaterials Science Forum Vol. 879Simultaneous Precipitation and Recrystallization...

Simultaneous Precipitation and Recrystallization during Hot Deformation of Ti, Nb and V Microalloyed Steel

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Abstract:

Recrystallization is a major means for controlling the grain size of steel during hot deformation. Usually, small grain sizes deliver superior mechanical properties. To aid the grain size controlling effect of recrystallization, small precipitates of carbo-nitride particles can be utilized to hinder the movement of grain boundaries. Interestingly, these particles are not only effective during grain growth, but also during recrystallization. In the present work, a recently developed state-parameter based model is introduced that is capable of describing both, the individual processes of static recrystallization, dynamic and static recovery and precipitation as well as the mutual interaction of these mechanisms in the course of elevated temperature processing. The evolution of state parameters within the model is discussed and the simulation results are compared to experimental information. Within our approach, a vast amount of experimental data for microalloyed steel is reproduced on basis of a single set of input parameters

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THERMEC 2016

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Periodical:

Materials Science Forum (Volume 879)

Pages:

2463-2467

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.879.2463

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Online since:

November 2016

Authors:

Heinrich Buken, Pavel Sherstnev, Ernst Kozeschnik

Keywords:

Micro-Alloyed Steel, Recrystallization, Solute Drag, Zener Drag

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