PHYSICAL METALLURGY AND COMMERCIALIZATION OF V-N MICROALLOYED Q460GJC STEEL PLATES
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 0.06-0.08%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 50mm V-N microalloyed Q460GJC steel plates with good combination of high strength>470MPa and improved toughness of Akv@0℃>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.
V-N microalloyed Precipitation Strengthening Mechanism Steel Plate
YANG Xiong-fei YU Hao CHENG Xingde CHEN Binghua
State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,PanGang Group Rese School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100 State Key Laboratory of Vanadium and Titanium Resources Comprehensive Utilization,PanGang Group Rese
国内会议
杭州
英文
955-960
2015-11-11（万方平台首次上网日期，不代表论文的发表时间）