Development of Micro-Alloying Ultra-Fine Grain High Strength Steel Produced by EAF-TSCR

Ji Xiang Gao; Xin Ping Mao; L.J. Li

doi:10.4028/www.scientific.net/MSF.697-698.474

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HomeMaterials Science ForumMaterials Science Forum Vols. 697-698Development of Micro-Alloying Ultra-Fine Grain...

Development of Micro-Alloying Ultra-Fine Grain High Strength Steel Produced by EAF-TSCR

Abstract:

Based on the characteristics of raw materials in EAF-TSCR, the composition of VN micro-alloyed was designed, the processes of the steelmaking, continuous casting, soaking, rolling, cooling were controlled, and at last the VN Micro-alloying high strength steel with ultra-fine grain was developed. The ferrite grain size of the steel reaches 3.0 to 4.0 microns, and the yield strength of which reaches 550MPa. Besides, the steel processes good toughness, cold formability and weldability. In the end, the strengthening mechanism of the ultra-fine steel was discussed.

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Periodical:

Materials Science Forum (Volumes 697-698)

Pages:

474-478

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.697-698.474

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Online since:

September 2011

Authors:

Ji Xiang Gao, Xin Ping Mao, L.J. Li

Keywords:

High Strength Steel (HSS), Thin Slab Casting and Rolling (TSCR), Ultra-Fine Grain (UFG), VN Micro-Alloyed

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