Browse > Article

Effects of Final Heat Treatment on Corrosion and Mechanical Properties of Zr Alloy Strip Incorporating Nb  

Lee, Myung Ho (Fusion Technology Development Div., KAERI)
Jung, Yang Il (Fusion Technology Development Div., KAERI)
Choi, Byoung Kwon (Fusion Technology Development Div., KAERI)
Park, Sang Yoon (Fusion Technology Development Div., KAERI)
Kim, Hyun Gil (Fusion Technology Development Div., KAERI)
Park, Jeong Yong (Fusion Technology Development Div., KAERI)
Jeong, Yong Hwan (Fusion Technology Development Div., KAERI)
Publication Information
Korean Journal of Metals and Materials / v.47, no.8, 2009 , pp. 474-481 More about this Journal
Abstract
The effects of final heat treatment on the mechanical and corrosion properties of a Zr alloy strip incorporating Nb were investigated. The chemical composition of the strip was Zr-1.49Nb-0.38Sn-0.20Fe-0.11Cr, and strip specimens were subjected to final heat treatment in a temperature range of $580{\sim}700^{\circ}C$. Tensile tests at room temperature and $316^{\circ}C$, along with corrosion tests in a simulated PWR loop and a 70 ppm LiOH solution environment at $360^{\circ}C$, were performed on the specimens. The mechanical properties of the strip were saturated when the specimens received final heat treatment at an elevated temperature of more than $640^{\circ}C$. However, the corrosion resistance of the strip in the simulated PWR loop and in the 70 ppm LiOH solution environment was improved with a decrease of the final annealing temperature. It is recommended that the alloy strip be finally heat-treated at a temperature of less than $620^{\circ}C$ for longer than 10 minutes in order to obtain fully recrystallized microstructures, and thereby attain enlarged tensile elongation, and to prevent the precipitation of ${\beta}-Zr$, which is known to deteriorate the corrosion resistance.
Keywords
Zirconium alloy; mechanical properties; corrosion; final annealing;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
Times Cited By Web Of Science : 4  (Related Records In Web of Science)
Times Cited By SCOPUS : 4
연도 인용수 순위
1 J. J. Kearns, Westinghouse Electric Corp., WAPD-TM-472(1965)
2 A. Akhtar, Acta Metall. 21, 1 (1973)   DOI   ScienceOn
3 H. Stehle, W. Kaden, and R. Manzel, Nucl. Eng. Des. 33, 155 (1975)   DOI   ScienceOn
4 K. W. Song, Y. H. Jeong, K. S. Kim, J. G. Bang, T. H. Chun, H. K. Kim, and K. N. Song, Nucl. Eng. Tech. 40, 21(2008)   과학기술학회마을   DOI
5 W. Tyson, Acta Metall. 15, 574 (1967)   DOI   ScienceOn
6 O. Castelnau, H. Francillette, B. Bacroix, and R. A. Lebensohn, J. Nucl. Mater. 297, 14 (2001)   DOI   ScienceOn
7 H. G. Kim, S. Y. Park, M. H. Lee, Y. H. Jeong, and S. D. Kim, J. Nucl. Mater. 373, 429 (2008)   DOI   ScienceOn
8 F. Garzarolli, H. Stehle, and E. Steinberg, ASTM STP 1295, 12 (1996)
9 A. Jain and S. R. Agnew, Mater. Sci. Eng. A 462, 29(2007)   DOI   ScienceOn
10 Y. H. Jeong, S. Y. Park, M. H. Lee, B. K. Choi, J. H. Baek, J. Y. Park, J. H. Kim, and H. G. Kim, J. Nucl. Sci. Tech. 43, 977 (2006)   DOI   ScienceOn
11 M. H. Lee, J. H. Kim, B. K. Choi, and Y. H. Jeong, J. Alloy. Compd. 428, 99 (2007)   DOI   ScienceOn
12 E. Hillner, ASTM STP 633, 211 (1977)
13 S. J. King, R. L. Kesterson, K. H. Yueh, R. J. Comstock, W. M. Herwig, and S. D. Ferguson, ASTM STP 1423, 471(2002)
14 M. H. Lee, Y. I. Jung, J. Y. Park, and Y. H. Jeong, J. Kor. Inst. Met. & Mater. 47, 482 (2009)
15 Y.-I. Jung, M.-H. Lee, J.-Y. Park, and Y.-H. Jeong, Metal. Mater. Int. (2009) in press
16 Y. H. Jeong, H. G. Kim, and T. H. Kim, J. Nucl. Mater. 317, 1 (2003)   DOI   ScienceOn
17 A. Akhtar, J. Nucl. Mater. 47, 79 (1973)   DOI   ScienceOn