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분야
공학 > 금속공학
저자
김성우 ( Sung Woo Kim ) , 김동진 ( Dong Jin Kim )
발행기관
한국부식방식학회(구 한국부식학회)
간행물정보
Corrosion Science and Technology 2013년, 제12권 제3호, 132~141페이지(총10페이지)
파일형식
22504290.pdf [무료 PDF 뷰어 다운로드]
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    영문초록
    This work is concerning a methodology of Ni-base superalloy development for a very high temperature gas-cooled reactor(VHTR) using design of experiments(DOE) and thermodynamic calculations. Total 32 sets of the Ni-base superalloys with various chemical compositions were formulated based on a fractional factorial design of DOE, and the thermodynamic stability of topologically close-packed(TCP) phases of those alloys was calculated by using the THERMO-CALC software. From the statistical evaluation of the effect of the chemical composition on the formation of TCP phase up to a temperature of 950℃, which should be suppressed for prolonged service life when it used as the structural components of VHTR, 16 sets were selected for further calculation of the mechanical properties. Considering the yield and ultimate tensile strengths of the selected alloys estimated by using the JMATPRO software, the optimized chemical composition of the alloys for VHTR application, especially intermediate heat exchanger, was proposed for a succeeding experimental study.
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