Zr-Cu-Ni-Al-Ag alloy with higher amorphous forming ability and production method thereof

A zr-cu-ni-al-ag, amorphous technology is applied in the field of preparation of Zr-based amorphous alloys to achieve the effects of good application prospects, strong amorphous forming ability and improving amorphous forming ability

Active Publication Date: 2008-12-03
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Compared with crystalline alloys, there are no crystal defects such as dislocations and grain boundaries in amorphous alloys, so they have better corrosion resistance. At present, GM in the United States and Honda in Japan have used Zr-based amorphous in automobiles. In fact, due to the absence of Zr-based amorphous components with independent property rights, domestic work on such applications is less

Method used

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  • Zr-Cu-Ni-Al-Ag alloy with higher amorphous forming ability and production method thereof
  • Zr-Cu-Ni-Al-Ag alloy with higher amorphous forming ability and production method thereof
  • Zr-Cu-Ni-Al-Ag alloy with higher amorphous forming ability and production method thereof

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Effect test

Embodiment 1

[0036] The raw materials used in this example are all high-purity (>99.9%) pure metals, and the master alloy ingots are prepared by arc melting under the protection of argon. In order to ensure that the composition of the alloy ingots is uniform, the alloy ingots are smelted at least four times . By inhibiting the ZrCu phase, the amorphous formation ability of the alloy is very effectively improved. The specific composition of the alloy is (atomic percentage): 51% Zr, 29.9% Cu, 5% Ni, 11% Al, 3.1% Ag.

[0037] Under high vacuum conditions, through vacuum spray casting equipment, the master alloy ingots are remelted and blown into Cu molds of different sizes with argon. The present embodiment adopts copper mold casting concrete process parameter as follows: vacuum degree 10 -3 Pa, temperature 1200°C, cooling rate 10 2 K / s.

[0038] like figure 2 As shown, even if the alloy rod with a diameter up to 20 mm is spray-cast, the XRD results show that the rod is completely amorph...

Embodiment 2

[0043]The raw materials used in this example are all high-purity (>99.9%) pure metals, and the master alloy ingots are prepared by arc melting under the protection of argon. In order to ensure that the composition of the alloy ingots is uniform, the alloy ingots are smelted at least four times . By inhibiting the ZrCu phase, the amorphous formation ability of the alloy is very effectively improved. The specific composition of the alloy is (atomic percentage): 53% Zr, 32% Cu, 4% Ni, 9% Al, 2% Ag.

[0044] Under high vacuum conditions, through vacuum spray casting equipment, the master alloy ingots are remelted and blown into Cu molds of different sizes with argon. The present embodiment adopts copper mold casting concrete process parameter as follows: vacuum degree 10 -3 Pa, temperature 1360°C, cooling rate 10 2 K / s.

[0045] An alloy round rod with a diameter of up to 18 mm was spray-cast, and the XRD result showed that the round rod was amorphous (such as Figure 5 shown)...

Embodiment 3

[0050] The raw materials used in this example are all high-purity (>99.9%) pure metals, and the master alloy ingots are prepared by arc melting under the protection of argon. In order to ensure that the composition of the alloy ingots is uniform, the alloy ingots are smelted at least four times . By inhibiting the ZrCu phase, the amorphous formation ability of the alloy is very effectively improved. The specific composition of the alloy is (atomic percentage): 53% Zr, 22.5% Cu, 4.5% Ni, 9% Al, 11% Ag.

[0051] Under high vacuum conditions, through vacuum spray casting equipment, the master alloy ingots are remelted and blown into Cu molds of different sizes with argon. The present embodiment adopts copper mold casting concrete process parameter as follows: vacuum degree 10 -3 Pa, temperature 1280°C, cooling rate 10 2 K / s.

[0052] An alloy round rod with a diameter of up to 20mm was spray-cast, and the XRD result showed that the round rod was amorphous (such as Figure 8 s...

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Abstract

The invention relates to a preparation technology of a block zirconium-base amorphous alloy, in particular to a Zr-Cu-Ni-Al-Ag alloy with higher glass-forming ability and a preparation method thereof, and the characteristic thermodynamics parameter and the mechanical property of the alloy are characterized and tested at the same time. The alloy system is the Zr-Cu-Ni-Al-Ag alloy, which has the component ranges (by atom percentage) that Zr is 41 to 63, Cu is 18 to 46, Al is 4 to 15, Ni is 1.5 to 12.5, and Ag is 1.5 to 26. Based on a Zr-Cu-Ni-Al quaternary alloy, the forming ability of the amorphous alloy is increased through inhibiting the precipitation of a crystalline state phase. The preparation technology adopts an electric arc melting method to prepare a master alloy ingot, then adopts a copper mold casting method to prepare amorphous alloy rods with different diameters, and the alloy in the system can easily prepare amorphous round bars, the diameter of which can reach 2cm. Due to stronger amorphous forming ability and good mechanical property, the alloy has good application prospect.

Description

technical field [0001] The invention relates to the preparation technology of Zr-based amorphous alloy, in particular to a Zr-Cu-Ni-Al-alloy with relatively high amorphous forming ability and a preparation method. Background technique [0002] Zr-based amorphous alloys have strong amorphous-forming ability and a wide supercooled liquid phase region, and can easily prepare good-quality bulk amorphous alloys with less complicated equipment, and at the same time show excellent mechanical properties. performance. After more than ten years of development, at present, Zr-based amorphous is the most mature system and the system most likely to be applied in engineering. Although many Zr-based alloys have been developed so far, the alloy of the Zr-Ti-Cu-Ni-Be system developed by the Johnson group in 1994 is still the most successful. In this system, the critical cooling rate of some composition points can even reach 1K / s, which makes the engineering application of bulk amorphous al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10C22C1/03B22D21/00B22D27/04
Inventor 张海峰邓胜涛李宏王爱民丁炳哲胡壮麒
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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