初始组织形态对中碳及中碳合金钢退火组织演变的影响  

Effect of initial microstructure on microstructure evolution of medium carbon and medium carbon alloy steels during annealing

作　　者：王利军 陈继林 翟进坡 冯忠贤 王宁涛 

机构地区：[1]邢台钢铁有限责任公司河北省线材工程技术研究中心,河北邢台054027

出　　处：《金属热处理》2016年第11期30-34,共5页Heat Treatment of Metals

摘　　要：分析了不同强度级别螺栓用冷镦钢盘条不同初始组织形态对退火组织演变的影响。工业轧制试验结果表明:低温轧制SCM435钢得到的多边形铁素体、珠光体、贝氏体及少许马氏体组织不利于获得均匀分布的球状珠光体;Gleeble热模拟组织转变研究结果表明:低温形变后ML35钢晶粒明显偏细,且碳化物部分球化,有利于获得球状珠光体。Effect of initial microstructure on microstructure evolution during annealing of cold heading steel for different strength grade fasteners was studied. Industrial rolling test results of the SCM435 steel indicate that microstructure of the warm rolled wire rod consisting of ferrite,pearlite,bainite and little quantity of martensite is not beneficial to get the uniform spheroidal pearlite. The hot uniaxial compression test results show that the warm deformation of ML35 steel can obtain obvious refined grain,and partly spheroidized carbides,which is easily to obtain uniform spheroidal pearlite after annealing.

关 键 词：中碳钢 初始组织形态 退火 硬度 

分 类 号：TG142.41[一般工业技术—材料科学与工程]