Effects of cerium addition on solidification structure and mechanical properties of 434 ferritic stainless steel

被引：2

作者：

张少华 ^{[1
]}

于彦冲 ^{[2
]}

王社斌 ^{[2
]}

李豪 ^{[1
]}

机构：

[1] College of Materials Science and Engineering, Taiyuan University of Technology

[2] Key Laboratory of Interface Science and Engineering in Advanced Materials, Ministry of Education, Taiyuan University of Technology

来源：

Journal of Rare Earths | 2017年 / 35卷 / 05期

关键词：

434 ferritic stainless steel; Ce; solidification structure; mechanical property; rare earths;

D O I：

暂无

中图分类号：

TG142.71 [不锈钢、耐酸钢];

学科分类号：

080502 ;

摘要：

Effects of Ce refiners on the solidification structure and the mechanical property of ferritic stainless steel were investigated, the corresponding mechanisms were also discussed. The results showed that the solidification of the ferritic stainless steel was remarkably refined with 0.011 wt.% Ce and 0.023 wt.% Ce refiners. Ce played a great role of inclusion modification and the shape and size of the inclusions were changed by adding Ce. And after adding rare earth Ce, great amounts of high-melting point rare earth Ce inclusions（Ce;O;and Ce;O;S） were formed. The fracture mode of 434 ferritic stainless steel was typical cleavage fracture, however, the ductility and the toughness of ferritic stainless steel was remarkably enhanced with 0.011 wt.% Ce and 0.023 wt.% Ce refiner. But the solidification structure and the mechanical property of 434 ferritic stainless steel could not be improved with 0.034 wt.% Cerefiner.

引用

页码：518 / 524

页数：7

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