Microstructure and Property of 700MPa Ti Microalloyed High Strength Steel Produced by EAF-CSP

2011 ◽  
Vol 287-290 ◽  
pp. 961-965
Author(s):  
Ji Xiang Gao ◽  
Xin Ping Mao ◽  
Qi Lin Chen ◽  
Lie Jun Li
Keyword(s):  
Mechanical Properties ◽  
Yield Strength ◽  
Continuous Casting ◽  
High Strength Steel ◽  
High Strength ◽  
Strengthening Mechanism ◽  
Rolling Process ◽  
Precipitation Strengthening ◽  
Smelting Process ◽  
Hot Rolled

High strength steel ZJ700MC with yield strength grade of 700 MPa was successfully developed by Ti micro-alloyed technology in the EAF-CSP line at Zhujiang Steel. The composition design, smelting process, continuous casting and rolling process of the steel, as well as the mechanical properties of the hot-rolled product are introduced in the paper. An analysis on the strengthening mechanism of the high strength steel shows that the enhanced strength and toughness of the steel were caused by the refinement of ferrite grain and the precipitation strengthening of TiC.

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

2011 ◽  
Vol 697-698 ◽  
pp. 474-478
Author(s):  
Ji Xiang Gao ◽  
Xin Ping Mao ◽  
L.J. Li
Keyword(s):  
Grain Size ◽  
Yield Strength ◽  
Continuous Casting ◽  
High Strength Steel ◽  
Raw Materials ◽  
High Strength ◽  
Strengthening Mechanism ◽  
Fine Grain ◽  
Ferrite Grain Size

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.

Study of processing, microstructure and mechanical properties of hot rolled ultra-high strength steel

2018 ◽  
Vol 46 (6) ◽  
pp. 535-541 ◽  
Author(s):  
Tihe Zhou ◽  
David Overby ◽  
Peter Badgley ◽  
Chris Martin-Root ◽  
Xiang Wang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Strength Steel ◽  
High Strength ◽  
Microstructure And Mechanical Properties ◽  
Ultra High Strength Steel ◽  
Hot Rolled

Microstructure and Mechanical Properties of Laser Welded Joint of 800 MPa Grade Hot-Rolled High Strength Steel

2019 ◽  
Vol 46 (1) ◽  
pp. 0102002
Author(s):  
环鹏程 Huan Pengcheng ◽  
王晓南 Wang Xiaonan ◽  
朱天才 Zhu Tiancai ◽  
陈文刚 Chen Wengang ◽  
胡增荣 Hu Zengrong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Strength Steel ◽  
Welded Joint ◽  
High Strength ◽  
Microstructure And Mechanical Properties ◽  
Hot Rolled

scholarly journals Effect of Niobium or Vanadium on Mechanical Properties of Hot Rolled High Strength Steel Sheets for Automotive Use

2007 ◽  
Vol 93 (6) ◽  
pp. 451-458 ◽  
Author(s):  
Daisuke KONDO ◽  
Kazutoshi KUNISHIGE ◽  
Rintaro UEJI ◽  
Shunichi HASHIMOTO
Keyword(s):  
Mechanical Properties ◽  
High Strength Steel ◽  
High Strength ◽  
Steel Sheets ◽  
Hot Rolled
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