用CCT图研究Mo-Nb钢铸态贝氏体组织的形成

Study on Formation of As-Cast Bainite in Mo-Nb Steel by CCT Diagram

所研究的铸态贝氏体钢是通过合金化和控制冷却速度的方法在铸态下直接得到贝氏体组织的 ,不需热处理即可获得所需的组织和性能。为真实反映贝氏体钢铸态组织的形成过程 ,用CCT图模拟铸态条件 ,找出连续冷却速度与各种组织形成的规律 ,为Mo

The as-cast bainite steel studied in this paper could obtain bainite directly in the as-cast condition through alloying and controlling the cast cooling rate without heat treatment.By simulating the as-cast condition with the CCT diagram,the relationship between the continuous cooling rate and the formation of all kinds structure was found out,and it supplies the theory basis for Mo-Nb steel to obtain bainite in the as-cast condition.