王鹏,李长荣,刘然,师帅,李中元

• 1:贵州大学材料与冶金学院
• 2:贵州省冶金工程与过程节能重点实验室

摘要(Abstract)：

利用光学显微镜、扫描电镜和能谱分析研究稀土元素Ce对钢中铜元素偏析的影响。结果表明:铜元素极易在晶界处偏析,随着Ce含量的增加,晶粒尺寸由最初的69.4μm减小到13.7μm,晶界数量增多,单位晶界上铜元素含量显著降低,减少量达到86.3%;理论计算与实验表明,稀土夹杂物Ce_2O_3和Ce_2O_2S均可以诱导钢中铜元素的非均质异质形核析出,改变铜元素在钢中的析出方式,使铜元素呈现均匀弥散化分布。

关键词(KeyWords)： 铜偏析;稀土夹杂物;晶粒细化;非均质形核

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51364006)

作者(Author): 王鹏,李长荣,刘然,师帅,李中元

DOI: 10.13289/j.issn.1009-6264.2018-0117

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