对比研究了钛和铌微合金化Q345C钢的显微组织及力学性能.结果表明:两种试验钢均具有较高的屈服强度、良好的延伸性和低温冲击韧性,钛微合金化钢的延展性和低温冲击韧性更好,强度略低;两种钢的组织均由铁素体和珠光体组成,晶粒度均为9～11级;钛微合金化钢中的夹杂物主要为MnS和少量Ti4C2S2,析出物是尺寸为50～250 nm的TiN,强化机制主要为细晶强化;铌微合金化钢中的夹杂物主要为MnS,析出物是尺寸为20～100 nm的Nb(C,N),强化机制主要为细晶强化和沉淀强化.
参考文献
| [1] | 毛新平.薄板坯连铸连轧微合金化技术[M].北京:冶金工业出版社,2008 |
| [2] | Vervynckt, S.;Verbeken, K.;Thibaux, P.;Houbaert, Y. .Recrystallization-precipitation interaction during austenite hot deformation of a Nb microalloyed steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2011(16/17):5519-5528. |
| [3] | 毛新平 .薄板坯连铸连轧Ti微合金化高强耐候钢研究[D].北京:北京科技大学,2005. |
| [4] | 邱克辉,恭迎春,张佩聪,周世杰.科学可持续发展攀枝花钒钛产业[J].钢铁钒钛,2009(03):17-20. |
| [5] | 衣海龙,杜林秀,王国栋,刘相华.含钛高强度钢变形奥氏体的连续冷却相变[J].机械工程材料,2006(12):4-6,10. |
| [6] | Han, Y.;Shi, J.;Xu, L.;Cao, W.Q.;Dong, H..Effect of hot rolling temperature on grain size and precipitation hardening in a Ti-microalloyed low-carbon martensitic steel[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2012:192-199. |
| [7] | YI Hai-long,LIU Zhen-yu,WANG Guo-dong,WU Di.Development of Ti-Microalloyed 600 MPa Hot Rolled High Strength Steel[J].钢铁研究学报（英文版）,2010(12):54-58,64. |
| [8] | XU G;GAN Xiao-long;MA Guo-jun et al.The development of Ti-allloyed high strength microalloy steel[J].Materials and Design,2010,31:2891-2896. |
| [9] | YAN W;SHAN Y Y;YANG K .Effect of TiN inclusions on the impact toughness of low-carbon microalloyed steels[J].Metallurgieal and Materials Transactions:A,2006,37:2147-2158. |
| [10] | ENOMOTO M;NOJIRL N;SATO Y .Effects of vanadium and niobium on the nucleation kinetics of proeutectoid ferrite at anstenite grain boundaries in Fe-C and Fe-C Mn alloys[J].MATERIALS TRANSACTIONS,1994,35(12):859-867. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%