High glass forming ability and good mechanical properties of Cu-Zr-Al bulk metallic glasses

For developing bulk metallic glasses with high glass forming ability (GFA) and good mechanical properties, Cu 92−x Zr x Al 8 (x = 35-65 at-%) alloys have been studied by means of tilt mould casting method. The largest glassy rod with a critical diameter of 18 mm in this alloy series was obtained for...

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Bibliographic Details
Published in:Materials research innovations 2011-10, Vol.15 (5), p.310-314
Main Authors: Zhou, B W, Zhang, X G, Zhang, W, Kimura, H, Makino, A, Inoue, A
Format: Article
Language:English
Subjects:
Alloys
Amorphous materials
Forming
Glass
Glass forming ability
Glassy
Glassy alloy
Mechanical properties
Mechanical property
Metallic glasses
Thermal stability
Zirconium base alloys
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Summary:For developing bulk metallic glasses with high glass forming ability (GFA) and good mechanical properties, Cu 92−x Zr x Al 8 (x = 35-65 at-%) alloys have been studied by means of tilt mould casting method. The largest glassy rod with a critical diameter of 18 mm in this alloy series was obtained for Cu 42 Zr 50 Al 8 alloy. The Hruby factor is appropriate for evaluating GFA in the cast Zr-Cu-Al bulk glassy alloy. The bulk metallic glasses with high GFA exhibit good mechanical properties, i.e. compressive fracture strength of 1783-2240 MPa, Young's modulus of 90-123 GPa and plastic strain of 0-0·73%.
ISSN:1432-8917
1433-075X
DOI:10.1179/143307511X13109310554562