High Glass-Forming Ability and Unusual Deformation Behavior of New Zr-Cu-Fe-Al Bulk Metallic Glasses

Qing Sheng Zhang; Wei Zhang; Dmitri V. Louzguine-Luzgin; Akihisa Inoue

doi:10.4028/www.scientific.net/MSF.654-656.1042

Paper Titles

Durability of Aluminum Alloy/Rubber Joints in Corrosive Environment
p.1026

Structure of Porous Copper Fabricated by Unidirectional Solidification under Pressurized Hydrogen
p.1030

Structural Behavior of FRP Lighting Pole System
p.1034

Local Atomic Arrangements of Pd-Based Bulk Metallic Glasses of the Metal-Metalloid Type Demonstrated by Molecular Dynamics Simulations
p.1038

High Glass-Forming Ability and Unusual Deformation Behavior of New Zr-Cu-Fe-Al Bulk Metallic Glasses
p.1042

Viscous Flow Behaviour of Supercooled Liquids and Mechanical Properties in Zr-Cu-Ni-Al Bulk Metallic Glasses
p.1046

Effect of Residual Stress on Mechanical Property of Monolithic Bulk Metallic Glass
p.1050

Microstructural Assessment of the Oxidation Behavior of Cu-Based Metallic Glass Powder
p.1054

Mechanical Properties and Structures of High Entropy Alloys and Bulk Metallic Glasses Composites
p.1058

HomeMaterials Science ForumMaterials Science Forum Vols. 654-656High Glass-Forming Ability and Unusual Deformation...

High Glass-Forming Ability and Unusual Deformation Behavior of New Zr-Cu-Fe-Al Bulk Metallic Glasses

Abstract:

A new series of bulk metallic glasses were developed by addition of Fe into the ternary Zr60Cu30Al10 alloy. Although Fe-Cu element pair shows distinct immiscibility with a large positive heat of mixing, substitution of Fe for Cu significantly improves the glass-forming ability of the ternary Zr60Cu30Al10 alloy. The critical diameter for glass-formation increases from 8 mm for Zr60Cu30Al10 alloy to 20 mm for Zr60Cu25Fe5Al10 and Zr62.5Cu22.5Fe5Al10 alloys. As compared with the ternary Zr60Cu30Al10 alloy, the new quaternary Zr-Cu-Fe-Al alloys show lower liquidus temperatures. The Zr60Cu25Fe5Al10 and Zr62.5Cu22.5Fe5Al10 alloys, the best BMG-formers in this alloy system, are found to locate very near a Zr-Cu-Fe-Al eutectic point. The new Zr-Fe-Cu-Al bulk metallic glasses exhibit high strength of about 1700 MPa. The plastic strain increases from 7.8% to 11.3% with increasing the content of Fe from 0 to 12.5%. The finding of a Ni-free Zr-based bulk glassy alloy with the extremely high glass-forming ability is expected to extend the future application of bulk metallic glasses.