浅析微量合金元素Mo对钢筋HRB400E组织和性能的影响  

the Impact of Microalloying Element Mo on Microstructure and Performance of HRB400E Bar Stock

作　　者：邱容容 Qiu Rongrong(Fujian Sansteel Minguang Co.,Ltd.Sanming 365000,Fujian)

机构地区：[1]福建三钢闽光股份有限公司,福建三明365000

出　　处：《福建冶金》2020年第5期39-42,共4页Fujian Metallurgy

摘　　要：本文通过对含微合金Mo的钢筋HRB400E和不含微合金Mo的钢筋进行模拟试验,通过对比冷却速率、金相显微组织、力学拉伸性能、断口显微形貌,发现微合金Mo含量高使钢筋出现大量贝氏体,导致抗拉强度大大提高,脆性增加,屈服平台消失,发生脆断。The impact of microalloying element Mo was analyzed by comparing the cooling rate,microstructure,mechanical performance,and fracture morphology of HRB400E bar stock samples with and without Mo element.It is found that high Mo content could induce large quantity of bainite in the microstructure,which leads to high tensile strength,more brittleness,no yield platform and finally causes brittle fracture.

关 键 词：微合金Mo 钢筋HRB400E 贝氏体 

分 类 号：TG142.1[一般工业技术—材料科学与工程]