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1738995 
Journal Article 
Microstructure and mechanical properties of an oxide dispersion strengthened ferritic steel by a new fabrication route 
Guo, L; Jia, C; Hu, B; Li, H 
2010 
1 
Materials Science and Engineering A: Structural Materials Properties Microstructure and Processing
ISSN: 0921-5093
EISSN: 1873-4936 
527 
20 
5220-5224 
WOS:000279756400023 
A reduced activation oxide dispersion strengthened (ODS) ferritic steel with nominal composition of Fe-12Cr-2.5W-0.25Ti-0.2V-0.4Y(2)O(3) (designated 12Cr-ODS) was produced by using EDTA-citrate complex method to synthesize and add Y(2)O(3) particles to an argon atomized steel powder, followed by hot isostatic pressing at 1160 degrees C for 3 h under the pressure of 130 MPa, forging at 1150 degrees C, and heat treatment at 1050 degrees C for 2 h. The microstructure, tensile, and Charpy impact properties of the 12Cr-ODS steel were investigated. Transmission electron microscopy studies indicate that the 12Cr-ODS steel exhibits the characteristic ferritic structure containing few dislocations. Tensile characterization has shown that the 12Cr-ODS steel has superior tensile strength accompanied by good elongation at room temperature and 550 degrees C. The material exhibits very attractive Charpy impact properties with upper shelf energy of 22J and a ductile-to-brittle transition temperature (DBTT) of about -15 degrees C. The formation of small, equiaxed grains and fine dispersion of oxide particles are the main reasons for the good compromise between tensile strength and impact properties. (C) 2010 Elsevier B.V. All rights reserved. 
EDTA-citrate complex method; Oxide dispersion strengthened; Microstructure; Tensile properties; Charpy impact properties