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http://dx.doi.org/10.12656/jksht.2018.31.3.91

Microstructural Development of Ferritic 11Cr-3.45W Heat-resistance Steel for Ultra-supercritical Power Plant During Creep and Thermal Aging  

Kim, Chung-Seok (Department of Materials Science and Engineering, Chosun University)
Publication Information
Journal of the Korean Society for Heat Treatment / v.31, no.3, 2018 , pp. 91-96 More about this Journal
Abstract
Microstructural development of ferritic 11Cr-3.45W heat-resistance steel for ultra-supercritical power plant during creep and thermal aging was investigated using electron microscopy. The test samples were isothermally aged at $700^{\circ}C$ for up to 4000 hours and subjected to creep loading at $700^{\circ}C$ for predetermined periods of lifetime to prepare the damaged materials. In this structural material, a various secondary phases are the primary influence on mechanical properties of ferritic heat-resistance steel. The typical precipitates of $M_{23}C_6$, MX and $M_2X$ secondary phases had been analyzed through qualitative and quantitative manner. Coarsening of precipitates and increase of lath width were observed during creep and thermal aging. This phenomenon was remarkable for creep process compared with isothermal aging process.
Keywords
11Cr-3.45W; Heat-resistance steel; Ultra-supercritical; Creep; Thermal aging;
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1 P. J. Ennis, A. Zielinska-Lipiec, O. Wachter, and A. Czyrska-Filemonowicz : Acta Mater., 45 (1997) 4901.   DOI
2 F. Abe, T. Horiuch, M. Taneike, and K. Sawada : Mater. Sci. Eng. A, 378 (2004) 299.   DOI
3 V. Sklenicka, K. Kucharova, M. Svobada, L. Kloc, J. Bursik, and A. Kroupa : Mater. Character., 51 (2003) 35.   DOI
4 C. S. Kim : Strength Mater., 48 (2016) 160.   DOI
5 C. S. Kim : Mater. Research Innova., 19 (2015) 1016.
6 Peter J. Szabo : Mater. Sci. Eng. A, 387-389 (2004) 710.   DOI
7 M. Kimura, K. Yamaguchi, M. Hayakawa, K. Kobayashi, and K. Kanazawa : Int. J. Fatigue, 28 (2006) 300.   DOI
8 Fujita : J. Iron Steel Inst. Jpn., 76 (1990) 1053.   DOI
9 F. Abe : Mater. Sci. Eng. A, 387-389 (2004) 565.   DOI
10 L. Korcakova, J. Hald, and M. Somers : Mater. Character., 47 (2001) 111.   DOI
11 A. Orlova, J. Bursik, K. Kucharoova, and V. Sklenicka : Mater. Sci. Eng. A, 245 (1998) 39.   DOI
12 M. Hattestrand, M. Schwind, and H. Andren : Mater. Sci. Eng. A, 250 (1998) 27.   DOI
13 K. Sawada, M. Takeda, K. Maruyama, R. Ishii, M. Yamada, Y. Nagae, and R. Komine : Mater. Sci. Eng. A, 267 (1999) 19.   DOI
14 F. Abe : Curr. Opin. Solid State Mater. Sci., 8 (2004) 305.   DOI