14MnNbq钢材质优化和应用研究  

Study on 14MnNbq Steel Optimization and Its Application to Bridges

作　　者：党志杰[1] 

机构地区：[1]中铁大桥局集团桥梁研究院,湖北武汉430034

出　　处：《中国铁道科学》2003年第1期113-116,共4页China Railway Science

摘　　要：14MnNbq钢要求屈服强度大于或等于390MPa,同时要满足低温抗断要求的可焊性和韧性。为了满足上述性能,提出了其化学成分设计原则,并进一步提出14MnNbq钢性能优化的技术条件,即化学成分优化和力学性能优化。14MnNbq钢要广泛应用于桥梁建设,尚需按照结构设计形式、结构制造工艺、荷载作用特点和使用环境进行大量的实验研究,以满足结构安全使用和结构使用寿命的要求。The 14MnNbq Steel requires a yielding intensity greater than or equal to 390 MPa. At the same time it must meet the requirement of weldability and ductile feature as required by the antibreak at low temperature. In order to meet the above feature, the chemical components design principle is presented and further requires that the 14MnNbq Steel must go through lots of tests on structure design, structure manufacture technique, loading function and features and application environment before being used in bridge construction so as to meet the requirements of the structural safety and structural service life.

关 键 词：材质优化 应用研究 钢材 14MNNBQ钢 综合性能 桥梁工程 强度 

分 类 号：U444.81[建筑科学—桥梁与隧道工程]