Grain growth of deformation induced ferrite in V microalloyed low carbon steel during controlled cooling process
The effect of vanadium on the DIFT (Deformation Induced Ferrite Transformation) microstructure coarsening in low carbon steel during the continuous cooling processes and isothermal processes at different temperatures were investigated using thermo-simulator. The results showed that the steel containing a small amount of vanadium had the similar velocity of grain growth with the vanadium free steel during the continuous cooling process, but a lower velocity of grain growth than that of vanadium free steel during isothermal processes at high temperatures. On the other hand, the vanadium remarkably inhibited grain growth in the steel containing a high amount of vanadium during both the continuous cooling and isothermal processes. Vanadium dissolved in matrix is indicated as an important factor on restraining grain growth through estimating the driving force of normal grain growth and the resistance of precipitation particles of vanadium on grain growth. The influencing mechanism of vanadium dissolved in matrix on the grain growth during the controlled cooling process is discussed.
low carbon steel vanadium microalloying DIFT grain growth controlled cooling process
WANG Kai WANG Li-jun WANG Qiang HE Ji-cheng LIU Chun-ming
Key Laboratory of Electromagnetic Processing of Materials, Ministry of Education, Northeastern Unive School of Materials and Metallurgy, Northeastern University, Shenyang 110819, China
国际会议
The 6th International Conference on High Strength Low Alloy Steels(第六届高强度低合金钢国际会议HSLA Steels2011)
北京
英文
903-908
2011-05-31（万方平台首次上网日期，不代表论文的发表时间）