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| Application of HTP Process in Production of Ultra-Heavy Steel With High Strength |
| HOU Hua-xing1,YANG Ying1,ZHANG Zhe1,LI Xin-ling2,LIU Ming1 |
（1. Technology Center, Angang Steel Co., Ltd., Anshan 114000, Liaoning, China
2. Bayuquan Iron and Steel Subsidiary, Angang Steel Co., Ltd., Yingkou 114000, Liaoning, China） |
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Abstract With the help of thermo-mechanical simulation and numerical simulation, the application of HTP process in high strength steel (yield strength is no less than 600MPa) with the thickness less than 100mm was discussed, in which Nb, Mn, Cr and B were added and two Nb content(0.09% and 0.05%) steel were contrasted. The results show that by using HTP and temper process, non-recrystallization temperature of steel plate is increased, homogeneity and toughness at center of ultra-heavy plate is obviously increased. The microstructure is mainly lath-like bainite on surface and at quarter, and grain bainite and black pearl-like at center of the thickness by different cooling rate.
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Received: 14 March 2011
Published: 20 February 2012
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2012, Vol. 47 
