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N-containing Be-free Ni-free high-hardness Zr matrix body amorphous alloy and preparation method thereof

An amorphous alloy and base block technology, which is applied in the field of Be-free, Ni-free and high-hardness Zr-based bulk amorphous alloys, can solve the problems of low hardness of Zr-based amorphous alloys, and achieve excellent biocompatibility.

Active Publication Date: 2017-05-24
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hardness of the currently developed Zr-based amorphous alloys is much lower than that of common Fe-based and Co-based amorphous alloys.

Method used

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  • N-containing Be-free Ni-free high-hardness Zr matrix body amorphous alloy and preparation method thereof
  • N-containing Be-free Ni-free high-hardness Zr matrix body amorphous alloy and preparation method thereof
  • N-containing Be-free Ni-free high-hardness Zr matrix body amorphous alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Example 1: Preparation and Properties of Zr-Cu-Ti-X-N Series Bulk Amorphous Alloy

[0027] Design the composition of Zr-Cu-Ti-X-N bulk amorphous alloy, and in order to reflect the influence of N microalloying on the amorphous, the inventor also prepared nitrogen-free Zr-Cu-Ti- X alloy. Zr-Cu-Ti-X is only used as a reference alloy, but it is not within the scope of this patent requirement, so it is hereby explained. The composition of the designed alloy is shown in Table 1, and the composition is replaced by N-I, N-II, N-III and N-IV.

[0028] like figure 1 As shown, the XRD patterns of 3mm N-I and N-II alloys and 4mm N-III and N-IV alloys all show typical diffuse scattering amorphous peaks, and the four alloys are all amorphous phases at this size. Correspondingly, the XRD patterns of alloys that do not contain N corresponding to N-I~N-IV are as follows: figure 2 shown. It can be clearly observed that at the same size, the sharp crystal phase diffraction peaks in ...

Embodiment 2

[0032] Example 2: Preparation and properties of Zr-Hf-Cu-Fe-Al-Z-N bulk amorphous alloy

[0033] Design the Zr-Hf-Cu-Fe-Al-Z-N bulk amorphous alloy composition, and in order to reflect the influence of N microalloying on the amorphous, the inventor also prepared nitrogen-free Zr- Hf-Cu-Fe-Al-Z alloy. Zr-Hf-Cu-Fe-Al-Z is only used as a reference alloy, but it is not within the scope of this patent requirement, so it is hereby explained. The composition of the designed alloy is shown in Table 2, and the composition is replaced by N-1 to N-12.

[0034] image 3 Shown are N-1, N-3, N-4 alloy 4mm sample XRD pattern. There are only diffuse scattering peaks typical of amorphous in the XRD spectrum, indicating that the 4mm alloy is in the amorphous phase, indicating that the alloy system has a strong ability to form amorphous.

[0035] Depend on Figure 4 It can be clearly observed that the addition of N element significantly enhances the Vickers hardness of the amorphous, and th...

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Abstract

The invention relates to an N-containing Be-free Ni-free high-hardness Zr matrix body amorphous alloy. The expression of the alloy in atomic percentage is Zr Cu A <c> B <d> X <e>Z <f> N<g>, wherein A is one of Hf and Ti; B is a IIIA group element; X is one or more elements of VIII group elements or rare-earth elements except Ni; Z is one or more elements of IB group elements and VB group elements; a+b+c+d+e+f+g=100%, a is greater than or equal to 25 %, and is lower than or equal to 65 %; b is greater than or equal to 15 %, and is lower than or equal to 65 %; c is greater than or equal to 5 %, and is lower than or equal to 15 %; d is greater than or equal to 0, and is lower than or equal to 15 %; e is greater than or equal to 0, and is lower than or equal to 15 %; f is greater than or equal to 0, and is lower than or equal to 10 %; and g is greater than or equal to 0.05 %, and is lower than or equal to 0.5 %. The N-containing Be-free Ni-free high-hardness Zr matrix body amorphous alloy disclosed by the invention does not contain a metallic element Be and a metallic element Ni, so that the biocompatibility of a Zr -base alloy is improved; the N-containing Be-free Ni-free high-hardness Zr matrix body amorphous alloy has high glass forming ability, and the Zr matrix body amorphous alloy of which the critical dimension is not less than 2mm can be prepared through adopting a copper mold suction casting method; and compared with a N-free amorphous alloy, the N-containing Be-free Ni-free high-hardness Zr matrix body amorphous alloy has the advantage that the vickers hardness of an alloy system is not less than 540Hv.

Description

technical field [0001] The invention belongs to bulk amorphous alloys, in particular to a N-containing, Be-free, Ni-free, high-hardness Zr-based bulk amorphous alloy. [0002] technical background [0003] Amorphous alloys (metallic glasses) are promising metallic materials for new-generation structural and functional applications that have emerged in recent years. Different from the long-range ordered arrangement of atoms in traditional metal materials, the atoms of amorphous alloys are arranged randomly, without long-range order, and there is no grain boundary, which also makes amorphous alloys have unique mechanical properties. and broad application prospects. [0004] At present, researchers have obtained bulk amorphous materials in more than ten alloy systems such as Zr-based, Pd-based, La-based, Mg-based, Fe-based, and Ni-based. Compared with alloys of other systems, Zr-based bulk amorphous alloys have attracted much attention due to their excellent amorphous-forming ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10
CPCC22C45/10C22C1/11
Inventor 吕昭平曹迪吴渊王辉刘雄军
Owner UNIV OF SCI & TECH BEIJING
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