Nb元素添加对75Cr1相变的影响  

Effect of Niobium addition on phase transformation behavior of 75Cr1 steel

作　　者：陈明昕[1] 杨晓江 冯晓勇 CHEN Ming-xin;YANG Xiao-jiang;FENG Xiao-yong(Science and Technology Information Department,Center Iron and Steel Research Institute,Beijing 100081.China;Technology Innovation Department of HBIS Laoting Steel Co.,Ltd.,Tangshan 063606,Hebei,China)

机构地区：[1]钢铁研究总院科技信息与战略研究所,北京100081 [2]河钢乐亭钢铁有限公司技术创新部,河北唐山063606

出　　处：《金属功能材料》2020年第2期53-57,共5页Metallic Functional Materials

摘　　要：以圆锯用钢75Cr1合金成分为基础,通过在其中加入质量分数为0.02%左右的Nb元素,研究Nb元素添加对75Cr1在不同奥氏体化温度下的CCT/TTT曲线变化,分析Nb对75Cr1固态相转变的影响规律。结果表明,铌的添加能够降低过冷奥氏体稳定性,促进钢的珠光体转变,从而提高钢的淬硬性。About 0.02 wt% Nb element was added to the circular saw steel 75Cr1, the change of CCT/TTT curves of 75Cr1 adding Nb under different austenitizing temperature was studied, and the influence of adding Nb on the solid phase transition of 75Cr1 was analyzes. The results show that adding Nb can reduce the stability of supercooled austenite and promote the pearlite transformation, the hardening of steel was improved.

关 键 词：Nb合金化 圆锯用钢 CCT TTT 相变 

分 类 号：TG142.45[一般工业技术—材料科学与工程]