新型SiMnCr系高强度粗钢筋材料的研制  

Development of a New Kind of Si-Mn-Cr Steel for High Strength Reinforcement

作　　者：王宝奇[1] 谷南驹[1] 马晓莉[1] 郭素珍[1] 徐言忠[2] 张国华[2] 杜丽萍[2] 

机构地区：[1]河北工业大学材料学院,天津300132 [2]天津轧二制钢有限公司,天津300400

出　　处：《材料热处理学报》2002年第2期65-68,共4页Transactions of Materials and Heat Treatment

基　　金：天津市重点科技攻关项目 (9931 0 4 2 1 1 )

摘　　要：针对高强度钢筋的性能要求和钢筋生产的工艺特点 ,设计了一种新型的低碳SiMnCr系高强度钢。测定了该钢种的CCT曲线及其力学性能。在锻造或轧态下 ,可获得以低碳马氏体为主含少量贝氏体、残留奥氏体的复相组织 ,经低温回火 ,可获得高的强度 (σb>12 30MPa)和良好的塑性 (δ5≥ 8% )。A new kind of steel for high strength reinforcement,low carbon Si Mn Cr system,has been developed according to the properties and the production process of the high strength reinforcement.The CCT diagram and the mechanical properties of the steel has been tested.It is shown that the composite microstructure of the steel after forging or high temperature rolling which consists of the dominant lath martensite, a little part of bainite and retained austernite is observed by OPM and TEM,depended on the high strength ( σ b>1230MPa) as well as good plasticity ( δ 5≥8%) of the steel are presented after low temperature tempering.

关 键 词：高强度 SiMnCr系钢筋 低碳马氏体 

分 类 号：TG142.1[一般工业技术—材料科学与工程]