第一作者：李阳
通讯作者：陈常勇,姜周华
合写作者：王琦,杨皓,马帅,孙萌
发表刊物：Journal of Iron and Steel Research International
期号：4
卷号：30
影响因子：3.1
DOI码：10.1007/s42243-023-00914-8
所属单位：东北大学冶金学院
教研室：绿色智能特殊钢冶金研究中心
摘要：The effects of magnesium (Mg) on the microstructure and properties of 440C stainless bearing steel melted under pressurized conditions were studied. Adding Mg improved the cleanliness of molten steel, modified the inclusions in steel, enhanced the distribution of carbides, and improved the mechanical properties and corrosion resistance of experimental steel. In detail, the contents of TO, S, and N in steel decreased from 0.0013 to 0.0003 wt.%, from 0.0032 to 0.0018 wt.% and from 0.0088 to 0.0049 wt.%, respectively. In addition, the transformation order of oxide inclusions in steel is Al2O3 -> MgO center dot Al2O3 -> MgO, where the content of Mg in steel sharply increased from 0.00 to 29 x 10(-4), 81 x 10(-4), and 160 x 10(-4) wt.%, and the transformation order of S-containing inclusions in steel is MnS -> Mg-S-Mn(-MgO) -> Mg-O-S. Moreover, the number and size of inclusions and the proportion of large-size inclusions in steel decreased rapidly. Furthermore, the network structure of carbides in steel collapsed, the size of carbides was reduced, and the distribution was more uniform. Finally, the tensile strength, impact toughness, and pitting corrosion resistance of the experimental steel were significantly improved.
关键字：MagnesiumBearing steelInclusionCarbideCorrosion resistance
论文类型：SCI
备注：无
学科门类：工学
一级学科：冶金工程
页面范围：808-824
ISSN号：1006-706X
是否译文：否