Effect of Carbon Content on Microstrcture and Properties of High Performance Bridge Steel
LI Jing1,SHANG Chengjia1,HE Xinlai1, YANG Ying2, MA Yupu2
1． School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;2． Angang Steel Company Limited, Anshan 114000, Liaoning, China
Abstract：The influence of composition and microstructure on the properties of 500 MPa grade high performance 0.08% and 0.04% carbon bridge steels were investigated. After continuous cooling, at same cooling speed in 0.08%C microalloyed steel, it is easier to form more lath bainite than in 0.04%C steel. In 0.04%C steel, cooled in the range of 110 ℃/s, the low carbon bainitic structure can be observed, which is helpful to uniformity of microstructure of steel plates. By the experimental thermamechanical control process (TMCP), two carbon steels have good elongation and impact performance at low temperature with the yield strengths up to 500 MPa. The crosssection microstructure of steel plate of 20 mm in thickness is uniform with granular bainite and acicular ferrite as main components.
李静;尚成嘉;贺信莱;杨颖;马玉璞. 碳含量对高性能桥梁钢组织结构和性能的影响[J]. 钢铁, 2006, 41(12): 64-0.
LI Jing;SHANG Chengjia;HE Xinlai;YANG Ying;MA Yupu. Effect of Carbon Content on Microstrcture and Properties of High Performance Bridge Steel. Iron and Steel, 2006, 41(12): 64-0.
2006, Vol. 41 
