|
|
STUDY ON FABRICATION, MICROSTRUCTURE AND PROPERTIES OF IN SITU TiC PARTICLE ON DISPERSION–STRENGTHENED 304 STAINLESS STEEL |
NI Zifei 1, SUN Yangshan 1,2, XUE Feng 1,2, BAI Jing 1,2 |
1. School of Materials Science and Engineering, Southeast University, Nanjing 211189
2. Jiangsu Key Laboratory for Advanced Metallic Materials, Nanjing 211189 |
|
Cite this article:
NI Zifei SUN Yangshan XUE Feng BAI Jing. STUDY ON FABRICATION, MICROSTRUCTURE AND PROPERTIES OF IN SITU TiC PARTICLE ON DISPERSION–STRENGTHENED 304 STAINLESS STEEL. Acta Metall Sin, 2010, 46(8): 935-940.
|
Abstract TiC dispersion–strengthened 304 stainless steel was fabricated using the technique of in situ reaction during melting of the steel. Microstructure observation reveals that the distribution of the added TiC particles with the size of 3—10 μm is basically uniform in the matrix grains, but slight aggregation of particles is observed in a few areas in the microstructure. The addition of TiC particles into 304 stainless steel results in the increase of ultimate strength, but the decrease of ductility. When the ingot of the TiC dispersion strengthened 304 stainless steel prepared is remelted by the technique of electroslag remelting, TiC particles in the steel are significantly refined and the distribution of them becomes more homogeneous, therefore the tensile properties of the steel are further improvd in comparison with that before electroslag remelting. Some tiny TiC particles with nano–scale were observed in the microstructure of the steel after electroslag remelting. Introduction of TiC particles to 304 stainless steel also causes a notable increase in creep resistance at thtemperature of 650 ℃ and applied stress of 150 MPa and the further improvement on creep properties of the steel is obtined after electroslag remelting.
|
Received: 26 March 2010
|
Fund: Supported by High Technology Research and Development Program of China (No.2007AA03Z508) |
[1] Ibrahim I A, Mohamed F A, Lavernia E J. J Mater Sci, 1991; 26(12): 1137
[2]Terry B S, Chinyamakobvu O S. Mater Sci Lett, 1991; 10: 628
[3] Kattamis T Z, Suganuma T. Mater Sci Eng, 1990; A128: 241
[4] Raghunath C, Bhat M S, Rohatgi P K. Scripta Metall Mater, 1995; 32: 577
[5]Sun Y S, Huang H B, He H Y, Cai L, Xue F, Mei J P, Wang S Q. China Pat ZL99114272.1, 2002
(孙扬善,黄海波,何华英,蔡磊,薛烽,梅建平,王仕勤.中国专利, ZL99114272.1, 2002)
[6] Wu Q L, Sun Y S, Xue F, Zhou J.Acta Metall Sin, 2008; 44: 745
(吴钱林,孙扬善,薛烽,周健. 金属学报, 2008; 44: 745)
[7] Manoharan M, Gupta M, Composites Part B, 1999; 30: 107
[8] Dumitrescu LFS, Hillert M. ISIJ Int, 1998; 39: 84
[9] Hernandez-Morales B, Mitchell A. Ironmak Steelmak, 1999; 26: 423
[10] McCartney D G. Int Mat Rev, 1989; 34: 247
[11] Wilshire B, Palmer C J. Scripta Materialia, 2002; 46: 483
[12] Takahashi Y, Yamane T. J Mater Sci, 1979; 14: 2818
|
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|