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Ni-Cr-(Ti,Nb,Fe)계 초내열합금 제조 및 평가
이기영(K. Y. Lee),안장홍(J. H. Ahn),손희영(H. Y. Son),남희수(H.S. Nam),김동배(D. B. Kim),이락규(L. G Lee),이기대(K. D. Lee) 한국소성가공학회 2011 한국소성가공학회 학술대회 논문집 Vol.2011 No.5
Nickel based Ni-Cr-(Ti,Nb,Fe)Super-alloy has been used in gas turbine and valve spring because of its low thermal expansion ratio, corrosion resistance, and high creep strength properties. Likewise other super-alloys composed of Ni-Cr-(Ti,Nb,Fe) have been imported to advance domestic manufacturing technology in the field of ingot making and ingot’s break down. In this project, the overall manufacturing process has been successfully performed, and the appraisal on nickel based Ni-Cr-(Ti,Nb,Fe)Super-alloy forged bar has been also carried out in the analysis of microstructure and mechanical properties with heat treatment.