冷轧节镍型不锈钢水纹印形成机理  

Forming mechanism of water marks on cold-rolled nickel-saving stainless steel

作　　者：鲁斐 刘瞿[2] 郭永亮 李小磊 何流 Lu Fei;Liu Qu;Guo Yongliang;Li Xiaolei;He Liu(Jihua Laboratory,Foshan Guangdong 528200,China;Department of Mechanical Engineering,Tsinghua University,Beijing 100084,China;China Super Lubrication Technology(Foshan)Co.,Ltd.,Foshan Guangdong 528200,China)

机构地区：[1]季华实验室,广东佛山528200 [2]清华大学机械工程系,北京100084 [3]超滑科技(佛山)有限责任公司,广东佛山528200

出　　处：《金属热处理》2024年第10期290-295,共6页Heat Treatment of Metals

基　　金：季华实验室科研项目(X210281TN210);佛山市创新创业团队项目(2120001008031)。

摘　　要：冷轧节镍型不锈钢板带连续退火后表面产生水纹印现象,会演变为锈蚀造成严重损失。通过金相显微镜、扫描电镜和能谱分析等手段对比分析了不锈钢板带无水纹印和有水纹印试样的表面形貌、成分、微观组织及耐蚀性,结合轧制工艺研究了水纹印的形成机理。结果表明,冷轧节镍型不锈钢的冷轧过程中,出现水纹印的带中部分处于高速轧制状态,轧制塑性变形速率远大于无水纹印的头部和尾部,导致微观组织产生大量的变形带,恶化了冷轧不锈钢的耐蚀性能,进而形成了大量微小点蚀组成的水纹印形貌。Water marks occurred on the surface of cold-rolled nickel-saving stainless steel strip after continuous annealing,which would evolve into corrosion and cause serious loss.The surface morphology,composition,microstructure and corosion resistance of the stainless steel strip specimens with and without water marks were compared and analyzed by means of metallographic microscopy,scanning electron microscopy and EDS analysis,and the forming mechanism of water marks was studied in combination with rolling process.The results indicate that during the cold rolling process of stainless steel,the middle part of the cold-rolled nickel-saving stainless steel where the water marks forms is in a high speed rolling state and is at a higher plastic deformation rate than the head and end without water marks.The high speed rolling results in numerous deformation bands within the microstructure of the strip which compromise the corrosion resistance of coldrolled stainless steel,ultimately leading to the formation of numerous micro-pitting water marks.

关 键 词：节镍型不锈钢 冷轧 退火 水纹印 

分 类 号：TG156.26[金属学及工艺—热处理]