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Modelling of the Dynamic Processes of Structure Formation by Macroscopic Parameters of Plastic Deformation

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Abstract:

In this paper, the phenomenological approach which connects the recrystallization parameters with thermomechanical characteristics of deformation is implemented to simulation of structural transformations. Two cases were considered, when the growth rate of recrystallized volumes is damping fast, and when a weak growth of recrystallized grains is observed. A pattern of structural states was obtained among the models with fast decrease in growth rate of recrystallized grain and weak grain growth. The abatement of the sensibility to the intensity of grain growth with increasing of strain rate was established. The function of recrystallized volume has oscillating behaviour depending on time and coefficient of recrystallization intensity. These results were confirmed by experimental researches of rheological behaviour of steels at low strain rates and high temperatures.

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Recrystallization and Grain Growth III View Preview

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Periodical:

Materials Science Forum (Volumes 558-559)

Pages:

563-567

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.558-559.563

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Online since:

October 2007

Authors:

Lyudmila Ryabicheva, Dmytro Usatyuk

Keywords:

Dynamic Recrystallization (DRX), Grain Growth Intensity Coefficient, Growth Rate, Oscillating Function, Recristallised Volume

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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References

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