摘要
通过热重分析、高温氧化实验、元素赋存状态表征和氧化铁皮致密度测定,对比分析以废钢为原料短流程生产含0.08%Cu与传统长流程生产含0.02%Cu的82B高碳钢在900~1100℃下的高温氧化行为,研究残余元素Cu对高温氧化行为的影响。结果表明:Cu会降低氧化速率,900℃与1000℃下保温1 h后Cu偏聚在基体表面晶界处以及氧化铁皮/基体界面间,1100℃时Cu则弥散分布在氧化铁皮中;随着温度升高氧化铁皮/基体界面的平直度降低,并且Cr、Si元素在界面形成的FeCr_(2)O_(4)和Fe_(2)SiO_(4)氧化膜变得不致密,为Cu向氧化铁皮中扩散提供了条件,增加了氧化铁皮去除难度。
By means of thermogravimetric analysis,high-temperature oxidation experiments,characterization of the elemental occurrence states and determination of the oxide skin density,a comparative analysis of the high-temperature oxidation behavior of 82B high-carbon steels were investigated at 900℃to 1100℃,there were two kinds of steel used in the test,one is 82B high-carbon steel containing 0.08%Cu produced by a short process using scrap steel as the raw material,and the orther is 82B high-carbon steel containing 0.02%Cu produced by a traditional long process.The influence of the residual element Cu on the high temperature oxidation behavior was studied.The results show that Cu can reduce the oxidation rate.After 1 hour at 900℃and 1000℃,Cu tends to aggregate at the grain boundaries of the substrate surface and between the oxide scale and the substrate interface,while at 1100℃,Cu is dispersed in the oxide scale.As the temperature increases,the flatness of the interface between the oxide scale and the substrate decreases,and the FeCr_(2)O_(4)and Fe_(2)SiO_(4)oxide films formed by Cr and Si elements at the interface become loose,providing convenience for Cu diffusion into the oxide scale and increasing the difficulty of removing of the oxide scale.
作者
李锦程
董帅君
张朝磊
李娜
王艺霏
吴咏锦
LI Jincheng;DONG Shuaijun;ZHANG Chaolei;LI Na;WANG Yifei;WU Yongjin(Institute for Carbon Neutrality,University of Science and Technology Beijing,Beijing 100083,China;School of Materials Science and Engineering,University of Science and Technology Beijing,Beijing 100083,China;Institute of Steel Sustainable Technology,Liaoning Academy of Materials,Shenyang 110167,China;HBIS Group Zhangxuan Technology,Xuanhua 075100,Hebei,China)
出处
《材料导报》
北大核心
2025年第12期179-184,共6页
Materials Reports
基金
国家重点研发计划(2023YFB3710205)。
关键词
残余元素
高碳硬线
高温氧化
氧化铁皮剥离性
residual elements
high-carbon hard wire
high-temperature oxidation
strippability of steel oxide scale
