Paper Titles
Preface
Recent Advances in the Simulation of Recrystallization and Grain Growth
p.3
Deformation Substructures and Recrystallisation
p.13
Role of Heavy Deformation in Thermomechanical Processing on the Formation of Ultrafine-Grained Structure in Steels
p.23
An Overview of Accomplishments and Challenges in Recrystallization and Grain Growth
p.33
Relation between Initial Texture and Microstructure and Nucleation and Growth Mechanisms in Metals
p.45
Boundary Mobilities during Recovery and Recrystallization of Binary Al - Mn Alloys
p.53
The Development of Homo and Heterogeneous Rolling Microstructures in Rolled Low Carbon and Interstitial-Free Steel
p.61
Relation between Ridging and Texture Components in Al-Mg-Si Alloy
p.71

Role of Heavy Deformation in Thermomechanical Processing on the Formation of Ultrafine-Grained Structure in Steels

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Abstract:

The formation of ultrafine-grained structure in steels by various thermomechanical processings is reviewed from a metallurgical point of view. In the recent new type TMCP, ultrafine ferrite grains with a grain size of about 1μm are obtained when the austenite is heavily deformed at lower temperatures. In this case, dynamic phenomena such as dynamic recrystallization become prominent in the process. In the aging after heavy cold rolling of supersaturated matrix phase in two-phase alloys, the competition between the recovery or recrystallization of matrix phase and the precipitation of second phase occurs, resulting in various types of two-phase structures including microduplex structure. Microduplex structure is also obtained by annealing after heavy cold rolling of coarse two-phase structure in duplex stainless steel and high carbon steel. Recently, various severe plastic deformation processings, in which very large plastic strain over 4 is applied to the materials, have been developed to produce ultrafine grained materials with nanocrystalline and/or submicrocrystalline structures.

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Recrystallization and Grain Growth III View Preview

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Periodical:

Materials Science Forum (Volumes 558-559)

Pages:

23-31

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.558-559.23

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Online since:

October 2007

Authors:

Tadashi Maki

Keywords:

Grain Size, Heavy Deformation, Recrystallization, Thermo-Mechanical Control Process (TMCP), Transformation, Ultrafine Grained

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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