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  5. 露点对DP590双相钢表面氧化行为的影响

露点对DP590双相钢表面氧化行为的影响

来源 :金属热处理 | 被引量 : 0次 | 上传用户：wwwboy2000
【摘 要】
：
DP590双相钢在连续退火过程中不可避免地发生合金元素氧化现象,使用扫描电镜(SEM)、X射线能谱仪(EDS)、X射线光电子能谱仪(XPS)以及辉光放电光谱仪(GDS)对在不同露点温度下进行退火处理的DP590钢进行表征分析.结果表明:在退火过程中,随着露点温度的升高,DP590钢由外氧化转变为内氧化,钢板表面氧化程度呈现先增大后减小的趋势,数值模拟结果指出DP590钢内外氧化临界转变露点为-8.26℃,与试验结果相符合.DP590钢表面氧化物以锰的氧化物为主,随着露点温度的升高,Mn元素和O元素在DP5
【作 者】
：
杨培元 霍庆辉 陈卓 周伟 汪宏斌 
【机 构】
：
上海大学 材料科学与工程学院,上海 200444;上海大学 材料科学与工程学院,上海 200444;上海金属零部件绿色再制造工程技术研究中心,上海 200444
【出 处】
：
金属热处理
【发表日期】
：
2021年11期
【关键词】
：
DP590双相钢 连续退火 露点 内氧化 富集 
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论文部分内容阅读
DP590双相钢在连续退火过程中不可避免地发生合金元素氧化现象,使用扫描电镜(SEM)、X射线能谱仪(EDS)、X射线光电子能谱仪(XPS)以及辉光放电光谱仪(GDS)对在不同露点温度下进行退火处理的DP590钢进行表征分析.结果表明:在退火过程中,随着露点温度的升高,DP590钢由外氧化转变为内氧化,钢板表面氧化程度呈现先增大后减小的趋势,数值模拟结果指出DP590钢内外氧化临界转变露点为-8.26℃,与试验结果相符合.DP590钢表面氧化物以锰的氧化物为主,随着露点温度的升高,Mn元素和O元素在DP590钢表面的富集峰值变化表现为先增大后减小,Si元素和Al元素的富集峰值则呈现逐渐降低趋势.XPS数据显示钢板表面形成的氧化物主要以MnO、Mn-Si-O氧化物和Si-O氧化物的形式存在.
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