Al-Ni-Y-Ca aluminum-based amorphous alloy and preparation method thereof

An al-ni-y-ca, amorphous alloy technology, applied in the field of amorphous alloys, can solve the problems of high price, high cost, unsuitable for industrial production, etc., achieve low cost, increase melt bulk density, Effect of suppressing the diffusion of Al atoms

Active Publication Date: 2015-12-30
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, high-purity raw materials require higher costs and are not suitable for industrial production
Rare earth elements are an important class of elements commonly used to improve the amorphous formation ability of aluminum-based alloys, but these elements are expensive

Method used

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  • Al-Ni-Y-Ca aluminum-based amorphous alloy and preparation method thereof
  • Al-Ni-Y-Ca aluminum-based amorphous alloy and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: prepare Al 84.5 Ni 7 Y 8 Ca 0.5 amorphous alloy

[0049] Al by nominal composition 84.5 Ni 7 Y 8 Ca 0.5 (Al 85-x Ni 7 Y 8 Ca x (x=0.5)) for batching, using the experimental steps and conditions of the comparative example to prepare the composition of Al 84.5 Ni 7 Y 8 Ca 0.5 The alloy thin strip, the vacuum degree is 2Pa; X-ray diffraction (XRD) for phase analysis, the results show that the alloy thin strip has an amorphous structure, see attached figure 1 Curve 2; differential scanning calorimetry (DSC) for thermal stability analysis, the results show that Al 84.5 Ni 7 Y 8 Ca 0.5 T of amorphous ribbon g and T x 523K, 547K, see attached figure 2 Curve 9, than Al 85 Ni 7 Y 8 Improve 10K, 17K; the parameter ΔT that characterizes the ability of amorphous formation x 24K, than Al 85 Ni 7 Y 8 Increased by 41.2%.

Embodiment 2

[0050] Embodiment 2: prepare Al 84 Ni 7 Y 8 Ca 1 amorphous alloy

[0051] Al by nominal composition 84 Ni 7 Y 8 Ca 1 (Al 85-x Ni 7 Y 8 Ca x (x=1)) for batching, using the experimental steps and conditions of the comparative example to prepare the composition of Al 84 Ni 7 Y 8 Ca 1 The alloy thin strip, the vacuum degree is 1Pa; X-ray diffraction (XRD) for phase analysis, the results show that the alloy thin strip has an amorphous structure, see attached figure 1 Curve 3; differential scanning calorimetry (DSC) for thermal stability analysis, the results show that Al 84 Ni 7 Y 8 Ca 1 T of amorphous ribbon g and T x 518K, 548K, see attached figure 2 Curve 10, compared to Al 85 Ni 7 Y 8 Improvement of 5K, 18K; parameter ΔT characterizing the ability of amorphous formation x 32K, than Al 85 Ni 7 Y 8 An increase of 88.2%.

Embodiment 3

[0052] Embodiment 3: prepare Al 83.5 Ni 7 Y 8 Ca 1.5 amorphous alloy

[0053] Al by nominal composition 83.5 Ni 7 Y 8 Ca 1.5 (Al 85-x Ni 7 Y 8 Ca x (x=1.5)) for batching, using the experimental steps and conditions of the comparative example to prepare the composition of Al 83.5 Ni 7 Y 8 Ca 1.5 The alloy thin strip, the vacuum degree is 0.5Pa; X-ray diffraction (XRD) for phase analysis, the results show that the alloy thin strip has an amorphous structure, see attached figure 1 Curve 4; differential scanning calorimetry (DSC) for thermal stability analysis, the results show that Al 83.5 Ni 7 Y 8 Ca 1.5 T of amorphous ribbon g and T x 529K, 555K, see attached figure 2 Curve 11, ratio Al 85 Ni 7 Y 8 Improve 16K, 25K; the parameter ΔT that characterizes the ability of amorphous formation x 26K, than Al 85 Ni 7 Y 8 Increased by 52.9%.

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Abstract

The invention discloses an Al-Ni-Y-Ca aluminum-based amorphous alloy and a preparation method thereof, and relates to the field of amorphous alloys. Nominal chemical components of the aluminum-based amorphous alloy are Al85-xNi7Y8Cax, where x is greater than 0 and smaller than 6; the atomic percent of Al+Ca is 85 percent, the atomic percent of Ni is 7 percent, and the atomic percent of Y is 8 percent. The alloy is prepared by using a melt-spinning method, Ar gas is adopted for protection, the injection pressure is 0.8MPa, the rotating speed of a copper roller is 30m/s, and the vacuum degree is 0.1 to 2Pa. The obtained aluminum-based amorphous alloy has a simple system, is low in cost, has good amorphous forming ability and thermal stability, and has a wide application prospect.

Description

technical field [0001] The invention discloses an Al-Ni-Y-Ca series aluminum-based amorphous alloy and a preparation method thereof, belonging to the field of amorphous alloys. Background technique [0002] Aluminum-based amorphous alloys have excellent properties, such as high strength, low density, high elastic strain limit, good corrosion resistance, etc., and have important application prospects in the field of high-performance structures. At present, Al-based amorphous has developed more than 40 systems and more than 300 alloys, mainly in Al-RE, Al-RE-TM, Al-LTM-ETM (RE: rare earth elements, TM: transition group elements, LTM : post-transition group elements, ETM: front transition group elements) and other binary or multi-component systems. However, the amorphous-forming ability (GFA) of aluminum-based alloys is limited, and the prepared materials are mostly thin strips or powders. Therefore, it is of great significance to design and develop new alloy systems with goo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/08C22C1/00
Inventor 刘祖铭张伟亮谢跃煌麻梦梅尹晓宽周舒青
Owner CENT SOUTH UNIV
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