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材料工程  2013, Vol. 0 Issue (3): 61-66    DOI: 10.3969/j.issn.1001-4381.2013.03.012
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
热加工对430铁素体不锈钢“金粉”现象的影响
邵泽斌1,2, 陈海涛2, 郎宇平2, 朱心昆1
1. 昆明理工大学 材料科学与工程学院,昆明 650093;
2. 钢铁研究总院 结构材料研究所,北京 100081
Effect of Thermal Processing on the "Gold Dust" Defect of 430 Ferritic Stainless Steel
SHAO Ze-bin1,2, CHEN Hai-tao2, LANG Yu-ping2, ZHU Xin-kun1
1. Faculty of Material Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China;
2. Institute of Structure Materials, Central Iron and Steel Research Institute, Beijing 100081, China
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摘要 研究了430铁素体不锈钢晶间腐蚀和表面"金粉"缺陷的关系。通过Gleeble 3800热模拟机模拟了不同工艺条件下的热轧实验,以及热轧后模拟卷取对430铁素体不锈钢晶间腐蚀敏感性产生的影响;采用双环-电化学动电位再活化(DL-EPR)法检测430铁素体不锈钢的晶间腐蚀。结果表明:430铁素体不锈钢在热轧时产生敏化,在酸洗过程中造成的晶间腐蚀,最终会导致冷轧后表面"金粉"缺陷的产生。Gleeble实验表明,最终变形温度为900~950℃,冷速为水冷条件下有利于避免晶间腐蚀的产生。模拟卷取实验表明,经过650~800℃的处理能够进一步避免和消除430铁素体不锈钢的晶间腐蚀敏感性。
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邵泽斌
陈海涛
郎宇平
朱心昆
关键词 "金粉"430铁素体不锈钢晶间腐蚀DL-EPR    
Abstract:The relationship between the intergranular corrosion and "gold dust" defects on surfaces of 430 ferritic stainless steel was investigated. On the basis of the different hot rolling tests performed on Gleeble 3800 thermal mechanical simulation and simulated coiling test after deformation, a study was conducted in order to determine the effect of thermal processing on the intergranular corrosion of 430 ferritic stainless steel. The DL-EPR was introduced to measure the susceptibility to intergranular corrosion.The results showed that the 430 ferritic stainless steel sensitization happened in the process of hot rolling, then conduce intergranular corrosion during the pickling, eventually produced the "gold dust" defects after cold rolling. It is found that the intergranular corrosion sensitization could be effectively prevented with a combination of final rapid cooling (water cooling) at the final deformation temperature of 900-950℃.By the analysis of simulated coiling test results, the intergranular corrosion susceptibility of 430 ferritic stainless steel can be further avoided and eliminated by a treatment of 650-800℃.
Key words"gold dust"    430 ferritic stainless steel    intergranular corrosion    DL-EPR
收稿日期: 2012-02-21      出版日期: 2013-03-20
1:  TG142.71  
基金资助:

国家科技支撑计划(2007BAE51B01)

通讯作者: 郎宇平,男,高级工程师,从事不锈钢及先进钢铁材料方面的研究,联系地址:北京市海淀区学院南路76号钢铁研究总院结构材料研究所(100081)     E-mail: langyuping@nercast.com
作者简介: 邵泽斌(1987-),男,硕士研究生,研究方向为铁素体不锈钢,联系地址:昆明理工大学材料科学与工程学院(650093),E-mail:shaozebin@163.com
引用本文:   
邵泽斌, 陈海涛, 郎宇平, 朱心昆. 热加工对430铁素体不锈钢“金粉”现象的影响[J]. 材料工程, 2013, 0(3): 61-66.
SHAO Ze-bin, CHEN Hai-tao, LANG Yu-ping, ZHU Xin-kun. Effect of Thermal Processing on the "Gold Dust" Defect of 430 Ferritic Stainless Steel. Journal of Materials Engineering, 2013, 0(3): 61-66.
链接本文:  
http://jme.biam.ac.cn/CN/10.3969/j.issn.1001-4381.2013.03.012      或      http://jme.biam.ac.cn/CN/Y2013/V0/I3/61
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