Mo对1000MPa级低碳贝氏体钢未变形奥氏体连续冷却转变的影响  

Effect of Mo content on continuous cooling transformation of undeformed austenite in 1000 MPa grade low carbon bainitic steel

作　　者：张慧杰[1] 肖红亮 包耀宗[3] 

机构地区：[1]湖南华菱湘潭钢铁有限公司材料研究所,湖南湘潭411101 [2]湖南省国际工程咨询中心有限公司,湖南长沙410016 [3]钢铁研究总院结构材料研究所,北京100081

出　　处：《金属热处理》2015年第11期17-21,共5页Heat Treatment of Metals

基　　金：国家重点基础研究发展计划(973计划)(2010CB630805)

摘　　要：用Formastor-FII热膨胀仪进行热膨胀试验,结合显微组织观察和硬度测定,研究了1000 MPa级低碳贝氏体钢中钼元素对未变形奥氏体连续冷却相变的影响,测定了不同钼含量的试验钢的CCT曲线。结果表明,较高的钼含量降低贝氏体的析出温度,缩小贝氏体相变温度范围,并使CCT曲线向右移动。Through thermal expansion experiment on Formastor-FII thermal dilatometer,combined with observation of microstructure and hardness measurement,effect of Mo content on undeformed austenite continuous cooling transformation of 1000 MPa grade low carbon bainitic steel was investigated,and CCT curves of the steels with different Mo contents were measured.The results show that the higher Mo content reduces the temperature of phase transformation point of bainite,narrows the bainite transformation temperature range,and makes the CCT curves move to right.

关 键 词：钼 低碳贝氏体钢 相变 CCT曲线 

分 类 号：TG142.1[一般工业技术—材料科学与工程]