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

被引：65

作者：

Zhang Shaohua ^{[1
]}

Yu Yanchong ^{[2
]}

Wang Shebin ^{[2
]}

Li Hao ^{[1
]}

机构：

[1] Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China

[2] Taiyuan Univ Technol, Key Lab Interface Sci & Engn Adv Mat, Minist Educ, Taiyuan 030024, Peoples R China

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; TEXTURE DEVELOPMENT; HOT DUCTILITY; MICROSTRUCTURE; BRITTLENESS; PRESSURE; ALLOY;

D O I：

10.1016/S1002-0721(17)60942-6

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

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 (Ce2O3 and Ce2O2S) 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.% Ce refiner.

引用

页码：518 / 524

页数：7

共 24 条

[1]

Bengough GD, 1912, J I MET, V7, P123

[2] Effect of rare earth alloying on creep rupture of economical 21Cr-11Ni-N heat-resistant austenitic steel at 650°C [J].

Chen Lei ;

Long Hongjun ;

Liu Xingang ;

Jin Miao ;

Ma Xiaocong .

JOURNAL OF RARE EARTHS, 2016, 34 (04) :447-452

[3] STEADY-STATE COLUMNAR AND EQUIAXED GROWTH OF DENDRITES AND EUTECTIC [J].

HUNT, JD .

MATERIALS SCIENCE AND ENGINEERING, 1984, 65 (01) :75-83

[4]

[李长胜 LI Changsheng], 2006, [热加工工艺, Hot Working Technology], V35, P16

[5] Effect of cerium on the as-cast microstructure and tensile ductility of the twin-roll casting Fe-6.5 wt% Si alloy [J].

Li, Hao-Ze ;

Liu, Hai-Tao ;

Wang, Xiang-Long ;

Cao, Guang-Ming ;

Li, Cheng-Gang ;

Liu, Zhen-Yu ;

Wang, Guo-Dong .

MATERIALS LETTERS, 2016, 165 :5-8

[6] Microstructure, texture evolution and magnetic properties of strip-casting non-oriented 6.5 wt.% Si electrical steel doped with cerium [J].

Li, Hao-Ze ;

Liu, Hai-Tao ;

Liu, Zhen-Yu ;

Wang, Guo-Dong .

MATERIALS CHARACTERIZATION, 2015, 103 :101-106

[7] Effect of tin addition on the microstructure and properties of ferritic stainless steel [J].

Li, Yang ;

Han, Ji-peng ;

Jiang, Zhou-hua ;

He, Pan .

INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS, 2015, 22 (01) :37-44

[8] Characterization of the solidification structure and texture development of ferritic stainless steel produced by twin-roll strip casting [J].

Liu, H. T. ;

Liu, Z. Y. ;

Qiu, Y. Q. ;

Cao, G. M. ;

Li, C. G. ;

Wang, G. D. .

MATERIALS CHARACTERIZATION, 2009, 60 (01) :79-82

[9] Texture Development and Formability of Strip Cast 17% Cr Ferritic Stainless Steel [J].

Liu, Haitao ;

Liu, Zhenyu ;

Wang, Guodong .

ISIJ INTERNATIONAL, 2009, 49 (06) :890-896

[10] Nonequilibrium grain-boundary segregation mechanism of hot ductility loss for austenitic and ferritic stainless steels [J].

Liu, Zhenjun ;

Yu, Hongyao ;

Wang, Kai ;

Xu, Tingdong .

JOURNAL OF MATERIALS RESEARCH, 2015, 30 (13) :2117-2123

← 1 2 3 →