Kinetics of Grain Refinement by Warm Deformation of 304-Type Stainless Steel

Marina Tikhonova; Andrey Belyakov; Rustam Kaibyshev

doi:10.4028/www.scientific.net/MSF.706-709.2326

Paper Titles

Model for Predicting Recrystallization Behavior of Cold Rolled Extralow Carbon Steel Sheets
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Evolution of Microstructure and Mechanical Properties during Tempering of Continuously Cooled Bainitic Steels
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Eutectoid Decomposition of δ-Ferrite in Ferritic-Austenitic Duplex Cast Steel - Structural and Morphological Study
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Precipitation Strengthening of Micro-Alloyed Steels Thermo-Mechanically Processed by Ultra Fast Cooling
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Kinetics of Grain Refinement by Warm Deformation of 304-Type Stainless Steel
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Effect of Bake-Hardening Treatment on the Mechanical Properties of High Strength Bainitic Steel Produced by Thermomechanical Processing
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Microstructure Control of a Low Carbon Martensitic Stainless Steel by Quenching and Partitioning Heat Treatment
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Influence of Matrix Structure and Hard Carbide on Abrasive Resistance of Steel Plates
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Influence of Substitutional Atoms on the Solubility Limit of Carbon in B.c.c. Iron
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HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Kinetics of Grain Refinement by Warm Deformation...

Kinetics of Grain Refinement by Warm Deformation of 304-Type Stainless Steel

Abstract:

The dynamic process of grain evolution in an S304H-type austenitic stainless steel was studied in multiple forging tests at temperatures of 500°C, 600°C and 700°C. The deformation microstructure with a grain size of about 100 to 400 nm resulted from continuous dynamic recrystallization. The size of new grains and the recrystallization kinetics decreased with decreasing the deformation temperature. The dynamically equilibrium grain size evolved at large strains followed a power law function of the flow stress with a grain size exponent of about-0.2. The formation of new fine grains was assisted by dynamic recovery, which leads to an apparent steady state flow at large total strains.

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Periodical:

Materials Science Forum (Volumes 706-709)

Pages:

2326-2331

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.706-709.2326

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Online since:

January 2012

Authors:

Marina Tikhonova, Andrey Belyakov, Rustam Kaibyshev

Keywords:

Austenitic Stainless Steel, Deformation Behavior, Dynamic Recovery, Multiple Forging, Recrystallization

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