Development of V-N microalloyed Q460GJC steel plates
- 作者：YANG XiongfeiYU Hao
- 会议时间：2013-06-01
- 关键词：V-N microalloying ; TMCP ; Q460 ; steel plate
- 作者单位：YANG Xiongfei(State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,Pangang Group Research Institute Co.,Ltd.,Panzhihua 617000,Sichuan,China)YU Hao(School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China)
- 母体文献：第五届宝钢学术年会论文集
- 会议名称：第五届宝钢学术年会
- 会议地点：上海
- 主办单位：中国金属学会
- 语种：chi
摘要
For the purpose of reducing alloys additions and then its cost of conventionally combined Nb-V microalloyed Q460 grade steel plates for construction,a HSLA steel alloying design with only V-N microalloying of (0.060-/o - 0.080-/o ) V and free of niobium,and corresponding thermal mechanical controlled process were facilitated by better understanding the third generation TMCP concept and V-N microalloying technology.These resulted in successfully commercializing gauge 50 mm V-N microalloyed Q460GJC steel plates with good combination of high strength > 470 MPa and improved toughness of Akv@ O°C > 150 J,and low YS/UST ratio of 80% as well.Theoretical calculation indicated that the contribution by fined-grain and precipitate strengthening amount to ~ 66% of yield strength of the newly developed plate steels.