东北大学学报（自然科学版）

东北大学学报:自然科学版 ›› 2014, Vol. 35 ›› Issue (5): 700-703.DOI: 10.12068/j.issn.1005-3026.2014.05.021

• 材料与冶金 • 上一篇    下一篇

含锡铁素体不锈钢夹杂物的冶金行为

韩纪鹏，姜周华   

  1. (东北大学 材料与冶金学院， 辽宁 沈阳110819)
  • 收稿日期:2013-07-26 修回日期:2013-07-26 出版日期:2014-05-15 发布日期:2014-08-18
  • 通讯作者: 韩纪鹏
  • 作者简介:韩纪鹏(1989-)，男，河北邯郸人，东北大学博士研究生;姜周华(1963-)，男，浙江萧山人，东北大学教授，博士生导师.
  • 基金资助:
    国家科技支撑计划项目(2012BAE04B02);辽宁省高校创新团队支持计划项目.

Metallurgical Behavior of Inclusions in TinContaining Ferritic Stainless Steel

HAN Jipeng， JIANG Zhouhua   

  1. School of Materials & Metallurgy， Northeastern University， Shenyang 110819， China.
  • Received:2013-07-26 Revised:2013-07-26 Online:2014-05-15 Published:2014-08-18
  • Contact: JIANG Zhouhua
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摘要： 基于新型含锡铁素体不锈钢，采用冶金反应平衡对其冶炼过程进行实验室条件下的研究分析了锡在不锈钢冶炼过程的收得率及锡的添加对不锈钢基体的微观结构的影响规律，分析脱氧夹杂物的形貌和成分演变结果表明，尽管锡的熔点极低，其收得率较高;锡在硫化锰周围富集现象比较明显，夹杂物周围被锡包裹，电镜下呈白色，氧化物夹杂周围未见锡的富集;从金相分析结果发现，当锡质量分数不小于03%时，晶界析出物中锡的质量分数高于基体，即存在锡在晶界的偏析现象.

关键词: 锡, 铁素体不锈钢, 微观结构, 夹杂物, 偏析

Abstract: The smelting process of the new tincontained ferritic stainless steel was studied based on metallurgical reaction balance under laboratory condition. The yield of tin in the melting process of the stainless steel and the effects of the addition of tin on the microstructure of stainless steels were analyzed. The formation and evolution of inclusions formed in deoxidation process of molten stainless steel were also analyzed. The results showed that the yield of tin was pretty high regardless of its low melting point. The enrichment of tin around the sulfide inclusions was found in scanning electron microscope pictures and it is white in SEM， while it was not found in or around the oxide inclusions. From the metallographic analysis， tin segregated to the grain boundary when its content was higher than 0.3%.

Key words: tin, ferritic stainless steel, microstructure, inclusions, segregation

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