4J36因瓦合金冷轧卷板表面缺陷产生原因  

Causes of surface defects of 4J36 invar alloy cold rolled coil

作　　者：李吉东 王岩[1,2] 谷宇[1,2] 庄迎[1,2] 韩东[1,2] LI Jidong;WANG Yan;GU Yu;ZHUANG Ying;HAN Dong(State Key Laboratory of Advanced Stainless Steel Materials,Taiyuan Iron&Steel(Group)Co.,Ltd.,Taiyuan 030003,China;Technology Center,Shanxi Taiyuan Stainless Steel Co.,Ltd.,Taiyuan 030003,China)

机构地区：[1]太原钢铁(集团)有限公司先进不锈钢材料国家重点实验室,太原030003 [2]山西太钢不锈钢股份有限公司技术中心,太原030003

出　　处：《理化检验（物理分册）》2024年第8期72-75,共4页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：采用宏观观察、扫描电镜和能谱分析、金相检验、X射线衍射分析等方法对4J36因瓦合金冷轧卷板表面热擦疤缺陷进行分析。结果表明:冷轧卷板表面的热擦疤缺陷来源于热轧卷残留的氧化物;热轧卷表面内氧化层中的Fe_(3)O_(4)和FeO等氧化物呈岛状分布在FeNi_(3)中,酸洗后FeNi_(3)呈珊瑚状,导致底部的氧化物无法酸洗干净,冷轧后底部残留的氧化物暴露到表面,形成热擦疤缺陷。The thermal scratch defects on the surface of 4J36 invar alloy cold rolled coil were analyzed by means of macroscopic observation,scanning electron microscopy and energy spectrum analysis,metallographic examination,X-ray diffraction analysis.The results show that the thermal scratch defect on the surface of cold rolled coil came from the residual oxide of hot rolled coil.The oxides such as Fe_(3)O_(4)and FeO in the inner oxide layer on the surface of the hot rolled coil were island-like distributed in FeNi_(3).After pickling,FeNi_(3)was coral-like,which made the oxides at the bottom unable to be pickled clean.After cold rolling,the residual oxides at the bottom were exposed to the surface,forming thermal scratch defects.

关 键 词：因瓦合金 热擦疤缺陷 氧化物 内氧化 酸洗 

分 类 号：TG156.94[金属学及工艺—热处理] TG115.2[金属学及工艺—金属学]