第44卷第6期2022年12月甘肃冶金GANSUMETALLURGYVol.44No.6Dec.,2022文章编号:1672⁃4461(2022)06⁃0074⁃04超纯铁素体不锈钢J443山形鳞状折叠研究高仁强,刘燕,陈安忠,任娟红(酒泉钢铁(集团)有限责任公司,甘肃嘉峪关735100)摘要:通过扫描电镜和能谱分析等技术研究了J443表面山形鳞状折叠缺陷,对缺陷形貌、成分进行了分析,并研究了热轧轧制过程板坯表面缺陷演化过程。山形鳞状缺陷属表层缺陷,为超纯铁素体板坯表面缺陷反复轧制延伸而成,主要因超纯铁素体不锈钢铬含量高,抗氧化性强,表面氧化铁皮薄,基体偏软,在轧辊高面压作用下,表层缺陷在炉卷轧机往复轧制中反复延伸形成山形鳞状折叠缺陷。关键词:不锈钢;J443;热轧轧制;山形鳞状折叠中图分类号:TG142.71文献标识码:ASquamousFoldingofUltraPureFerriticStainlessSteelJ443GAORen⁃qiang,LIUYan,CHENAn⁃zhong,RENJuan⁃hong(JiuquanIron&Steel(Group)Co.Ltd.,Jiayuguan735100,China)Abstract:UsingMetallographicandEnergyspectrumstudythemoutainshapescalyfoldingofJ443,analysistheshapeofthedefect,compositioninthedefect,andthedevelopingofthedefectonthesurfaceoftheslabduringhotrolling.Themoutainshapescalyfoldingisthekindofsurfacedefect,thedefectsonthesurfaceoftheslabofultrapureferriticstainlesssteel,whenthematerialrolledandextendedalongtherolldirectionandreversedirectionoverandover.Becauseofthehighcontentofthechromium,highresistsoxidation,thethinlayerofscaleo...