Modeling of Developing Inhomogeneities in the Ferrite Microstructure and Resulting Mechanical Properties Induced by Deformation in the Two-Phase Region

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The differences in microstructure development of hot deformed steels in the austenite and two-phase region have been effectively described using an integrated computer modeling process. In general, the complete model presented here takes into account kinetics of recrystallization, precipitation, phase transformation, recrystallized austenite grain size, ferrite grain size, and the resulting mechanical properties. The transformation submodel of niobium-microalloyed steels is based on the nucleation and grain growth theory and additivity rule. The thermomechanical part of the modeling process was effectively carried out using the finite element method. Results were obtained in different temperatures, strain rates, and range of deformation. The ... continued below

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Majta, J; Zurek, A.K. & Pietrzyk, M. July 13, 1999.

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Description

The differences in microstructure development of hot deformed steels in the austenite and two-phase region have been effectively described using an integrated computer modeling process. In general, the complete model presented here takes into account kinetics of recrystallization, precipitation, phase transformation, recrystallized austenite grain size, ferrite grain size, and the resulting mechanical properties. The transformation submodel of niobium-microalloyed steels is based on the nucleation and grain growth theory and additivity rule. The thermomechanical part of the modeling process was effectively carried out using the finite element method. Results were obtained in different temperatures, strain rates, and range of deformation. The thermomechanical treatments are different for two grades of niobium-steels to make possible analysis of the resulting structure and properties for different histories of deformation and chemical composition.

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Medium: P; Size: vp.

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OSTI as DE00757432

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  • 4th International Conference on Recrystallization and Related Phenomena, JIMIS-10, Tsukuba (JP), 07/13/1999--07/16/1999

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  • Report No.: LA-UR-99-1398
  • Grant Number: W-7405-ENG-36
  • Office of Scientific & Technical Information Report Number: 757432
  • Archival Resource Key: ark:/67531/metadc704180

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  • July 13, 1999

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  • Sept. 12, 2015, 6:31 a.m.

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  • Feb. 29, 2016, 4:17 p.m.

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Majta, J; Zurek, A.K. & Pietrzyk, M. Modeling of Developing Inhomogeneities in the Ferrite Microstructure and Resulting Mechanical Properties Induced by Deformation in the Two-Phase Region, article, July 13, 1999; New Mexico. (digital.library.unt.edu/ark:/67531/metadc704180/: accessed August 20, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.