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가스터빈발전기용 Shroud Ring 단조품 제조기술개발
김종식(J. S. Kim),박병호(P. H. Park),임종호(J. H. Lim),김승국(S. K. Kim),박창혁(C. H. Park),이진현(J. H. Lee) 한국소성가공학회 2011 한국소성가공학회 학술대회 논문집 Vol.2011 No.5
HAYNES HR-120 alloy is a solid-solution strengthened Fe-Ni-Cr based super-alloy that possesses excellent strength at elevated temperatures, combined with very good resistance to carburizing and sulfidizing environments. The alloy is being used in industrial heating, heat treatment and land-based gas turbines. In this paper, we are developing a shroud ring for gas turbine using ring rolling. In order to reliability assessment, tensile and strength-rupture test were carried out to evaluate the mechanical properties. In addition, FE-analysis is implemented in order to reduce trial and error.