Er-containing Al-based bulk metallic glass alloy with large supercooling liquid phase region

A supercooled liquid phase, metallic glass technology, applied in the field of new materials, to achieve the effects of good mechanical properties, low glass turning temperature, and large glass forming ability
CN104178706AActive Publication Date: 2014-12-03DALIAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
DALIAN UNIV OF TECH
Publication Date
2014-12-03

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Abstract

The invention discloses Er-containing Al-based bulk metallic glass alloy with a large supercooling liquid phase region, belonging to the technical field of novel materials. A specific component expression formula of the alloy is AlaNibCocFedAgeErfLag, wherein a, b, c, d, e, f and g represent atomic percents of corresponding elements, b is not less than 2 and not more than 9, c is not less than 0 and not more than 3, d is not less than 0 and not more than 6, e is not less than 0 and not more than 3, f is not less than 2 and not more than 7, g is not less than 0 and not more than 4, the sum of a, b, c, d, e, f and g is 100, the sum of b, c and d is not less than 6 and not more than 10, and the sum of f and g is not less than 5 and not more than 9. The alloy has good glass forming capability, and a bulk metallic glass alloy bar material with the critical diameter of 1.2mm can be prepared by adopting a copper mould casting method; meanwhile, the alloy has the supercooling liquid phase region and good mechanical property, the temperature of supercooling liquid is 26-40 DEG C, the break strength is 1.11-1.24GPa, the specific strength is 319-348kN.m / kg, the plastic strain is 0.1%-0.4%, and the Vickers hardness is 362-385.
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Description

Technical field:

[0001] The invention belongs to the technical field of new materials, and relates to an Er-containing Al-based bulk metallic glass alloy with a large supercooled liquid phase interval. technical background:

[0002] Metallic glass (amorphous alloy) refers to a metal alloy in which the atomic arrangement has short-range order and long-range disorder in the solid state. Due to the unique microstructure of metallic glass, it has excellent mechanical properties, physical and chemical properties, such as high strength, high hardness, good corrosion resistance, and viscous flow characteristics in the supercooled liquid phase region. New structural or functional materials.

[0003] Among the many metallic glass alloy systems that have been discovered, Al-based metallic glass exhibits the characteristics of high specific strength, high toughness and good corrosion resistance. potential application. At present, people have multiple alloy systems (such as: Al-Ni-Co...

Claims

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