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材料研究学报  2011, Vol. 25 Issue (4): 347-354    
  研究论文 本期目录 | 过刊浏览 |
热轧工艺对Cr12钢表面起皱的影响机制
谢胜涛1,2, 刘振宇1, 方园2, 于艳2, 王喆2, 王国栋1
1.东北大学轧制技术及连轧自动化国家重点实验室 沈阳 110819
2.宝山钢铁股份有限公司研究院 上海 201900
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
引用本文:

谢胜涛 刘振宇 方园 于艳 王喆 王国栋. 热轧工艺对Cr12钢表面起皱的影响机制[J]. 材料研究学报, 2011, 25(4): 347-354.
. Effect of Hot Rolling Process on Surface Ridging of Cr12 Ferritic Stainless Steel[J]. Chin J Mater Res, 2011, 25(4): 347-354.

全文: PDF(1325 KB)  
摘要: 研究了热轧工艺对Cr12钢表面起皱相关的组织和织构演变的影响, 重点关注其对变形组织不均匀和晶粒簇形成的改变。结果表明: 随着热轧终轧温度由960降低到850oC, 在变形组织中带状晶粒减薄, 剪切变形比重增大, 含有剪切带的晶粒增多, 由表层向中心层逼近, 中心层附近光滑带状晶粒减少; 在退火组织中由含有剪切带晶粒形成的高r值晶粒簇增多, 由光滑带状晶粒形成的低r值晶粒簇减少, 而且带状晶粒的减薄使具有ε23正负差异的不同对称取向晶粒簇消退, 因此基体中ε33和ε23的差异均减小, 表面起皱减弱。
关键词 金属材料铁素体不锈钢起皱热轧显微组织织构    
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.
Key wordsmetallic material    ferritic stainless steel    ridging    hot rolling    microstructure    texture
收稿日期: 2010-11-30     
ZTFLH: 

TG142

 
基金资助:

国家自然科学基金50734002、51004035资助项目。

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