Crystallization Behaviour and Mechanical Properties of Zr65Cu18Ni9Al8 Bulk Metallic Glass

材料科学技术（英文）, 2007, 23(5): 693-696.

^1, , ^2, , ^3, , ^4,

1.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,72 Wenhua Road, Shenyang 110016, China;Physics Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan

2.Physics Division, Pakistan Institute of Nuclear Science and Technology, P.O. Nilore, Islamabad, Pakistan

3.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,72 Wenhua Road, Shenyang 110016, China

4.Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences,72 Wenhua Road, Shenyang 110016, China

基金项目: 清华大学校科研和教改项目(2006CB605201;2005DFA50860) 国家自然科学基金(50471077)

Crystallization Behaviour and Mechanical Properties of Zr65Cu18Ni9Al8 Bulk Metallic Glass

Keywords： Zr-based bulk amorphous alloys

Designing and synthesis of cost effective bulk metallic glasses (BMGs) has been of considerable interest during the last decade so that they can be made commercially viable. Among these, Zr-based BMGs have been reported extensively due to their attractive properties. An alloy having composition Zr65Cu18Ni9Al8 was designed and synthesized using 2-3 N pure materials by Cu mould casting. The alloy was characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDS) and high temperature differential scanning calorimetry (DSC). Thermal parameters like supercooled liquid region ΔTX, reduced glass transition temperature Trg, γand σ parameters were evaluated. Mechanical properties like microhardness, nanohardness, elastic modulus and fracture strength were measured. The alloy showed wide supercooled liquid region of 129±1 K with improved thermal stability. The alloy has considerable fracture strength along with fair amount of ductility.

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Crystallization Behaviour and Mechanical Properties of Zr65Cu18Ni9Al8 Bulk Metallic Glass

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