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| Effect of Hot Rolling Process on Surface Ridging of Cr12 Ferritic Stainless Steel |
| XIE Shengtao1,2, LIU Zhenyu1, FANG Yuan2, YU Yan2, WANG Zhe2, WANG Guodong1 |
1.State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819
2.Research Institute, Baoshan Iron & Steel Stock Limited Company, Shanghai 201900 |
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Cite this article:
XIE Shengtao LIU Zhenyu FANG Yuan YU Yan WANG Zhe WANG Guodong. Effect of Hot Rolling Process on Surface Ridging of Cr12 Ferritic Stainless Steel. Chin J Mater Res, 2011, 25(4): 347-354.
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Abstract The effect of hot rolling process on microstructural and textural evolutions associated with surface ridging of Cr12 ferritic stainless steel sheet was investigated. Special attention was paid to changes in the heterogeneity of deformed microstructure and the formation of grain colonies during annealing. The results show that: when finishing temperature of hot rolling decreases from 960 to 850oC band-like grains decrease in thickness, meanwhile shear deformation and grains containing shear bands increase and extend from surface to mid-thickness with the decrease of smooth grains in the deformed microstructure. In the annealed microstructure, high r–value grain colonies derived from the grains with shear bands increase and low r–value ones derived from smooth grains decrease. Moreover the decreasing thickness of band-like grains suppresses the formation of grain colonies of different symmetric orientations with positive or negative ε23. So both differences of ε33 and ε23 in the matrix decrease and surface ridging declines.
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Received: 30 November 2010
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| Fund: Supported by National Nature Science Foundation of China Nos. 50734002 & 51004035. |
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