Bulk metallic glass formation in the binary Cu–Zr system

Wang, D.; Li, Y.; Sun, B.B.; Sui, M.L.; Lu, K.; Ma, E.
May 2004
Applied Physics Letters;5/17/2004, Vol. 84 Issue 20, p4029
Academic Journal
Using the Cu-Zr model system, we demonstrate that bulk amorphous alloys can be obtained by copper mold casting even in a binary metallic system. The narrow, off-eutectic, bulk-glass-forming range was found to require composition pinpointing to < 1 at. %. A phase selection diagram is used to explain the success of our microstructure-based approach to pinpoint the best glass former in a given system. The implications of discovering simple binary bulk amorphous alloys are discussed, in terms of its impact on understanding the formation and physics of bulk metallic glasses.


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