Study of Grain Refinement and Precipitation in VN Steels Produced by CSP Process
HUO Xiangdong1,MAO Xinping2,ZHENG Xiaowei1,LIN Zhenyuan2,WANG Zhiyuan1
1.School of Material Science and Engineering, Jiangsu University, Zhenjiang 212013, Jiangsu, China; 2.CSP Applying Technology Research Institute, Guangzhou Iron and Steel Enterprise Group， Guangzhou 510730， Guangdong, China
Abstract：Using VN microalloying technology, strips whose yield strength is 600 MPa grade is produced by compact strip production (CSP) line. Scanning electron microscope and transmission electron microscope were used to study the microstructure and precipitation in VN steels. The ferrite grain size is about three microns. Tow types of V(C,N) particles with several tens nanometers or several nanometers are found. The main strengthening method is grain refinement, and V(C,N) particles play an important role of precipitation hardening. Base on the experimental results, the main reason for ultrafine microstructure was discussed.
霍向东;毛新平;郑晓伟;林振源;王志远. CSP生产的钒氮微合金钢的组织细化和析出物研究[J]. 钢铁, 2009, 44(4): 64-0.
HUO Xiangdong;MAO Xinping;ZHENG Xiaowei;LIN Zhenyuan;WANG Zhiyuan. Study of Grain Refinement and Precipitation in VN Steels Produced by CSP Process. Iron and Steel, 2009, 44(4): 64-0.
2009, Vol. 44 
