摘要
选择合理成分设计及轧制工艺,开发出满足GB/T28905—2012要求的40 mm和80 mm厚160 MPa级建筑抗震用低屈服点钢。所开发的40 mm钢板的微观组织为F+B,晶粒度为7~7.5级,屈服强度在157~168 MPa,抗拉强度在291~304 MPa,0℃下冲击功在289~311 J;所开发的80 mm钢板微观组织为F,晶粒度为5~5.5级,屈服强度在150~163 MPa,抗拉强度为280~285 MPa,0℃下冲击功在73~92 J。试制的LY160钢板具有良好的高应变低周疲劳性能和焊接性能,为160 MPa级低屈服点钢的工业试制提供了依据。
The 160 MPa low-yield strength steel plate with 40mm and 80mm thicknesses for building aseismic- ity was developed through reasonable composition design and rolling technology. The LY160 steel could meet the requirements of GB/T28905--2012. The microstructure of the LY160 steel plate（40 mm） consists of ferrite andvery small amount of bainite. The grain sizes range from ASTM No. 7 to 7.5. Yield strength is from 157 MPa to 168 MPa and tensile strength is from 291 MPa to 304 MPa. The impact energyat 0 ℃ ranges between 289 J and 311 J. The microstructure of the LY160 steel plate with 80 mm in thicknessis 100% ferrite. The grain sizes ranges from ASTM No. 5 to 5.5. In addition,the yield strength is from 150 MPto 163 MPa,The tensile strength is from 280 MPa to 285 MPa. The impact energy at 0℃ ranges between 73 J and 92 J. The new developed LY 160 steel plate combines high low-cycle fatigue property and excellent weldability.
作者
陈振业
孙力
刘宏强
孙晓冉
李双江
Chen Zhenye Sun Li Liu Hongqiang Sun Xiaoran Li Shuangjiang(Centre Iron and Steel Technology Research Institute of HBIS. , Shijiazhuang 050023, Hebei ,Chin)
出处
《钢铁钒钛》
CAS
北大核心
2017年第2期128-131,135,共5页
Iron Steel Vanadium Titanium
基金
河北省科技计划项目(16211018D)
关键词
抗震用钢
低屈服点钢
力学性能
高应变低周疲劳
steels for earthquake resistant, low yield point steel, mechanical properties, high strain low cy- cle fatigue
