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Microstructural Evolution and Mechanical Behaviour of Metastable Cu-Zr-Co Alloys 被引量:8
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作者 S.Pauly K.Kosiba +5 位作者 P.Gargarella b.escher K.K.Song G.Wang U.Kühn J.Eckert 《Journal of Materials Science & Technology》 SCIE EI CAS CSCD 2014年第6期584-589,共6页
Three different Cu-Zr-Co alloys, namely Cu40Zr37.5Co22.5, Cu42.5Zr45Co12.5 and Cu49Zr49Co2, were obtained by rapid cooling. The microstructure and phase formation of as-cast rods with diameters of 2 mm are compared wi... Three different Cu-Zr-Co alloys, namely Cu40Zr37.5Co22.5, Cu42.5Zr45Co12.5 and Cu49Zr49Co2, were obtained by rapid cooling. The microstructure and phase formation of as-cast rods with diameters of 2 mm are compared with those of the respective ingots. An increasing Co content stabilises the B2 CuZr phase and leads to the precipitation of a ternary Cu-Zr-Co phase. The variation of the cooling rate affects the size of the B2 dendrites as well as the volume fraction and the morphology of the interdendritic phases. The mechanical properties were determined in compression and all alloys show a certain plastic deformability despite the presence of several binary and ternary intermetallic phases. The deformation mechanisms are discussed on the basis of the microstructures and the constituent phases. 展开更多
关键词 Bulk metallic glasses Microstructural evolution Mechanical behaviour
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