Microstructural Evolution of Ultrafine-Grained Steel during Tandem Rolling Process

Xiang Dong Huo; Xin Ping Mao; Yi Zhong Chai

doi:10.4028/www.scientific.net/MSF.667-669.415

Paper Titles

Microstructural Evolution of Mg-4Nd Alloy Processed by High-Pressure Torsion
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Developing the Technique of Severe Plastic Deformation Processing through High-Pressure Torsion
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High-Temperature Severe Plastic Deformation of Ferritic Steel by Torsion
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The Structure of Nb Obtained by Severe Plastic Deformation and its Thermal Stability
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Microstructural Evolution of Ultrafine-Grained Steel during Tandem Rolling Process
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Microstructures and Tensile Properties of Maraging Steel Processed by Equal-Channel Angular Pressing
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Stabilization of Lattice Defects in HPT-Deformed Palladium Hydride
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Microstructure and Properties of Nanostructured Zirconium Processed by High Pressure Torsion
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Mechanisms of Microstructure Refinement in Titanium during “abc” Deformation at 400°C
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HomeMaterials Science ForumMaterials Science Forum Vols. 667-669Microstructural Evolution of Ultrafine-Grained...

Microstructural Evolution of Ultrafine-Grained Steel during Tandem Rolling Process

Abstract:

Titanium microalloyed steel whose grain size is around 3μm has been developed by CSP process. Samples after different plastic deformation were obtained by suddenly stopping the six-stand finishing train during tandem rolling. Experimental results and analysis show that plastic deformation during tandem rolling plays a major role for grain refinement. With the successive severe strain, microstructure of the same stock during tandem rolling is further refined because of repeated recrystallization at higher temperature and strain accumulation at lower temperature. Technological features of CSP process, such as large reduction per pass, rapid cooling after rolling and high solidification and of thin slab, are important reasons for obtaining ultafine-grained structure. Besides these, chemical composition of titanium microalloyed steel has beneficial effects on grain refinement.

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Periodical:

Materials Science Forum (Volumes 667-669)

Pages:

415-420

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.667-669.415

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Online since:

December 2010

Authors:

Xiang Dong Huo, Xin Ping Mao, Yi Zhong Chai

Keywords:

Austenite Recrystallization, Compact Strip Production (CSP), Transformation, Ultrafine Grained Steel

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