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http://dx.doi.org/10.5516/NET.07.2013.015

FABRICATION OF GD CONTAINING DUPLEX STAINLESS STEEL SHEET FOR NEUTRON ABSORBING STRUCTURAL MATERIALS  

Choi, Yong (Department of Materials Science and Engineering, Dankook University)
Moon, Byung M. (Liquid Processing & Casting Technology R&D Group, KITECH)
Sohn, Dong-Seong (Nuclear Science and Engineering Track, UNIST)
Publication Information
Nuclear Engineering and Technology / v.45, no.5, 2013 , pp. 689-694 More about this Journal
Abstract
A duplex stainless steel sheet with 1 wt.% gadolinium was fabricated for a neutron absorbing material with high strength, excellent corrosion resistance, and low cost as well as high neutron absorption capability. The microstructure of the as-cast specimen has typical duplex phases including 31% ferrite and 69% austenite. Main alloy elements like chromium (Cr), nickel (Ni), and gadolinium (Gd) are relatively uniformly distributed in the matrix. Gadolinium rich precipitates were present in the grains and at the grain boundaries. The solution treatment at $1070^{\circ}$ for 50 minutes followed by the hot-rolling above $950^{\circ}$ after keeping the sheet at $1200^{\circ}$ for 1.5 hours are important points of the optimum condition to produce a 6 mm-thick plate without cracking.
Keywords
Neutron Absorbing Material; Gd-duplex Stainless Steels; Casting;
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  • Reference
1 A. Machiels and R. Lambert, "Handbook on Neutron Absorber Materials for Spent Nuclear Fuel Applications", 2005-ed. 1011818, Electronic Power Research Institute (2005).
2 ASTM C750-89, "Standard Specifications for Nuclear Grade Boron Carbide Powder", (1997).
3 ASTM A 887-89, "Standard Specification for Borated Stainless SteelPlate, Sheet, and Strip for Nuclear Application", (2004)
4 J. Shimojo, H. Taniuchi. K. Kajihara and Y. Aruga, "Borated Aluminum Alloy Manufacturing Technology", Kobe Steel Engineering Reports, 53(3), 12 (2003).
5 P. Moldovan and G. Popesus, "The Grain Refinement of 6063 Aluminum Using Al-5Ti-1B and Al-3Ti - 0.15 C Grain Refiners", J. of Metals, 56(11), 59 (2004).
6 D. C. Halverson, A. J. Pyzik and I. A. Aksay, "Processing of Boron Carbide-Aluminum Composites" J. of American Ceramic Society, 72(5), 7759 (1989).
7 L. Karisson and H. Norden, "Non-equilibrium Grain Boundary Segregation of Boron in Austenitic Stainless Steel-II. Fine Scale Segregation Behavior", Acta Metallurgica, 36(1), 13 (1988).   DOI   ScienceOn
8 G.W. Wachs, J.W. Sterbentz, et al., "Nickel Based Gadolinium Alloy for Neutron Adsorption Application in Ram Package", PATRAM 2007, Miami, Florida, Oct. 2007
9 ASTM B932-04, "Standard Specifications for Low-Carbon Nickel-Cromium-Molybdenium-Gadolinium Alloy Plate, Sheet, and Strip" (2004)
10 G. W. Wachs, J. W. Sterbentz, L. M. Montierth, F. K. Tovesson and T. S. Hill, "Characterization of an Advanced Gadolinium Neutron Absorber Alloy by Means of Neutron Transmission", INL/CON-07-12838, Idaho National Laboratory (2007).
11 Z. Khan, "Influence of Gadolinium on the Microstructure and Mechanical Properties of Steel and Stainless Steel", J. Southern African Institute of Mining and Metallurgy, 112, 309 (2003).
12 K. Ravindranath and S. N. Malhotra, "The influence of Aging on the Intergranular Corrosion of 22 Chromium-5 Nickel Duplex Stainless Steel", Corrosion Science, 37(1), 121 (1995).   DOI   ScienceOn
13 X. Tang, "Sigma Phase Characterization in AISI 316 Stainless Steel," Microscopy and Microanalysis, 11(2), 78 (2005).