第一作者：李阳
通讯作者：姜周华
合写作者：杨光,陈常勇 ,孙深,杜鹏飞
发表刊物：Ironmaking & Steelmaking
期号：1
卷号：47
影响因子：1.7
DOI码：10.1080/03019233.2018.1538183
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 effect of Ce on the microstructure, mechanical properties and corrosion resistance of 27Cr-3.8Mo-2Ni super-ferritic stainless steel were investigated by FactSage 7.2, OM and SEM. The results reveal that when the Ce content increases from 0.00 wt-% to 0.0498 wt-%, Al2O3 inclusions wrapped by irregular (TiNb)N are gradually modified into spheroidal CeAlO3, Ce2O3, and Ce2O2S inclusions, the rare earth inclusions are smaller than 1.0 × 10−6 m (1.0 μm) and dispersedly distributed. The diameter of recrystallized ferrite grain is decreased, the mechanical properties of super-ferritic stainless steels are well improved, impact fracture appearance transforms from pre-dominant cleavage to ductile fracture at 298 K (25°C), and the cleaving step of the fracture becomes smaller at 243 K (−30°C), the uniform corrosion resistance to H2SO4 of steels with is enhanced especially in 40 vol.-% H2SO4 at 333 K (60°C). In addition, the microstructure and properties could not be further improved with 0.0744 wt-% Ce content.
关键字：Super-ferritic stainless steelceriuminclusionmicrostructureproperty
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：67-76
ISSN号：0301-9233
是否译文：否