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Cu<SUB>47.5</SUB>Zr<SUB>47.5</SUB>Al₅ 벌크 비정질 합금의 고온 변형 및 성형 특성
이수은(S. E. Lee),이광석(K. S. Lee),전현준(H. J. Jun),장영원(Y. W. Chang) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.10
Plastic deformation of a CU47.5Zr47.5Al? ternary bulk metallic glass in the supercooled liquid region was investigated. The appropriate working temperature-strain rate combination for optimum solid-to-solid forming was deduced to be between (710 K, 3×10?⁴ s?¹) and (735 K, 3×10?² s?¹) by constructing a processing map superimposed with the time-temperature transformation curve indicating crystallization. Furthermore, the actual formability around this processing window was not only confirmed by overlapping the laboratory-scale extrusion deformability but also estimated by applying finite element analysis.