발간논문

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Vol.46, No.5, 276 ~ 283, 2008
Title
Material Degradation of X20 Steel (12Cr-1MoVNi) for Boiler Tube of Power Plant
최병학 Byung Hak Choe , 윤기봉 Kee Bong Yoon , 이남혁 Nam Hyuck Lee , 김신 Sin Kim , 이길재 Gil Jae Lee , 김광호 Kwang Ho Kim , 권동일 Dong Il Kwon
Abstract
Material degradation of Cr steels in boiler tubes was accompanied by the microstructural changes including carbide behavior and crack formation. The microstructural change and the mechanical behavior of hardness and creep properties in accelerated heat-treatments were studied in order to identify the material degradation of the X20 Cr steel. The degradation behavior was occurred in the hardness increasing followed by decreasing due to carbide dissolution and precipitation.
Key Words
material degradation, crsteel, carbide behavior, accelerated heat-treatment
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