The microstructure characteristics and precipitation behavior of automobile beam steels produced by compact strip production (CSP) were investigated by use of scanning electron microscopy (SEM), transmission electron microscopy (TEM) and X-ray energy dispersive spectroscopy. The result shows that the final microstructure is mainly composed of polygonal ferrite and small amount of pearlite, and the average ferrite grain size is about 3-6 μm. Small amount addition Ti to aluminium-killed steel can help to refine the microstructure and improve the mechanical properties. A large number of fine precipitates have been observed in automobile beam steels. The mean particle size is about 10-30 nm. Remarkable strengthening and grain refinement can be obtained by these nano-particles.
参考文献
| [1] | Gunter Flemming;Karl-Ernst Hensger .Extension of product range and perspectives of CSP technology[J].Metallurgical Plant and Technology International,2000(1):54-56,58,60,62,64-0. |
| [2] | Hao YU,Hao Ren,Yonglin KANG,Kelu WANG.Carbon Diffusion in Hot Strips of Low Carbon Steel Produced by CSP Line under Different Thermal Histories[J].材料科学技术学报(英文版),2005(01):21-24. |
| [3] | Kang YL.;Yu H.;Fu J.;Wang K.;Wang ZB. .Morphology and precipitation kinetics of AlN in hot strip of low carbon steel produced by compact strip production[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2003(1/2):265-271. |
| [4] | Yu H;Kang Y L;Wang K L.Study of Mechanism on Microstructure Refinement During Compact Strip Production Process[J].Materials Science and Engineering,2003(363):86. |
| [5] | Gardiola B;Humbert M;Esling C.Determination and Prediction of the Inherited Ferrite Texture in a HSLA Steel Produced by Compact Strip Production[J].Materials Science and Engineering,2001(303):60. |
| [6] | Humbert M;Gardiola B;Esling C .Modeling of the Variant Selection Mechanism in the Phase Transformation of HSLA Steel Produced by Compact Strip Production[J].Acta Materialia,2002,50:1741. |
| [7] | Hao Yu,Yonglin Kang,Xueying Xiong,Kelu WANG,Jie Fu,Guijiang Chen,Liejun Li.Quantitative analysis on strengthening mechanism of ultra-thin hot strip of low carbon steel produced by CSP technique[J].北京科技大学学报(英文版),2004(05):425-427. |
| [8] | Yonglin Kang,Kelu WANG,Hao Yu,Jie Fu,Delu Liu,Zhongbing Wang,Xuewen Chen.Microstructure evolution and precipitation behavior of low carbon steel hot strips produced by CSP[J].北京科技大学学报(英文版),2004(04):364-367. |
| [9] | Kunishige K;Nagao N .Strengthening and Toughening of Hot-Direct-Rolled Steels by Addition of a Small Amount of Titanium[J].ISIJ International,1989,29(11):940. |
| [10] | Mingzhuo Bai,Delu Liu,Yanzhi Lou,Xinping Mao,Liejun Li,Xiangdong Huo.Effects of Ti addition on low carbon hot strips produced by CSP process[J].北京科技大学学报（英文版）,2006(03):230-234. |
| [11] | Ling Zhang,Wangyue Yang,Weiwei Zheng,Zuqing Sun.Carbides/nitrides precipitates in a C-Mn strip by CSP technology[J].北京科技大学学报（英文版）,2005(06):517-520. |
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