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논문 기본 정보

자료유형
학술저널
저자정보
최국선 (RIST) 하태권 (Wonju National University)
저널정보
한국소성·가공학회 소성·가공 소성가공 제22권 제3호
발행연도
2013.6
수록면
165 - 170 (6page)

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초록· 키워드

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High temperature deformation behavior of a heat-resistant duplex stainless steel, used as a retort in the Pidgeon process for Mg production, was investigated in this study. 25Cr-8Ni based duplex stainless steels were cast into rectangular ingots, with dimensions of 350mm×350mm×100 mm. Nitrogen and yttrium were added at 0.3wt.% each to enhance the heatresistance of the steel. Phase equilibrium was calculated using the thermodynamic software FactSage® and the database of FSStel. For comparison, cast 310S steel, a widely used heat-resistant austenitic stainless steel, was also examined in this study. Dilatometry was conducted on the as-cast ingots for the temperature range from RT to 1200℃ and the thermal expansion coefficients were evaluated. The nitrogen addition was found to have an effect on the thermal expansion behavior for temperatures between 800 and 1000oC. High temperature tensile and compression tests were conducted on the ingots for temperatures ranging from 900 to 1230℃, which is the operation temperature employed in Mg production by the Silico-thermic reduction process. The steel containing both N and Y showed much higher strength as compared to 310S.

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Abstract
1. 서론
2. 실험방법
3. 결과 및 고찰
4. 결론
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