Zirconium-titanium-nickel alloy and preparation method thereof

A technology of nickel alloy and zirconium titanium, which is applied in the field of alloy and its preparation, can solve the problems that mechanical properties such as strength cannot meet the requirements well, and achieve the effect of easy operation and simple preparation method

Active Publication Date: 2017-09-22
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing zirconium alloy grades are mainly aimed at nuclear and chemical industry applications. If the mechanical properties such as strength cannot meet the requirements well when used as a structural material, effective strengthening and toughening is required. Among them, alloying is an important toughness means

Method used

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  • Zirconium-titanium-nickel alloy and preparation method thereof
  • Zirconium-titanium-nickel alloy and preparation method thereof
  • Zirconium-titanium-nickel alloy and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0017] Take 29.7g of pure zirconium wire, 29.7g of pure titanium wire, and 0.6g of pure nickel wire, and place them in a non-consumable vacuum arc melting furnace for repeated melting for 6 times, each melting time is 3 minutes, and the melting electrode current is kept at 190-220A After each smelting is completed, wait for the ingot to cool to room temperature, and then perform the next smelting to obtain a zirconium-titanium-nickel alloy ingot with uniform composition. The smelted alloy ingot is cooled in the smelting furnace for 10 minutes and then taken out. Such as figure 1 As shown, it can be known that the phase composition of the prepared zirconium-titanium-nickel alloy is α phase and trace amount of C14 phase. Such as figure 2 As shown, it can be seen that the microstructure of the prepared zirconium-titanium-nickel alloy is composed of flaky α phase. Such as Figure 5 It shows that the prepared zirconium-titanium-nickel alloy has good fracture strength and high ...

Embodiment 2

[0020] Take 29.1g of pure zirconium wire, 29.1g of pure titanium wire, and 1.8g of pure nickel wire, and place them in a non-consumable vacuum arc melting furnace for repeated melting for 6 times, each melting time is 3 minutes, and the melting electrode current is kept at 190-220A After each smelting is completed, wait for the ingot to cool to room temperature, and then perform the next smelting to obtain a zirconium-titanium-nickel alloy ingot with uniform composition. The smelted alloy ingot is cooled in the smelting furnace for 10 minutes and then taken out. Such as figure 1 As shown, it can be known that the prepared zirconium-titanium-nickel alloy contains α phase and trace amount of C14 phase. Such as image 3 As shown, it can be seen that the microstructure of the alloy is composed of flaky α-phase, but the width of the α-sheet layer is reduced compared with the zirconium-titanium-nickel alloy prepared in Example 1, indicating that the increase of nickel will make th...

Embodiment 3

[0023] Take 28.5g of pure zirconium wire, 28.5g of pure titanium wire, and 3g of pure nickel wire, and place them in a non-consumable vacuum arc melting furnace for repeated melting 6 times, each melting time is 3 minutes, and the melting electrode current is kept at 190-220A. After each smelting is completed, wait for the ingot to cool down to room temperature, and then perform the next smelting to obtain a zirconium-titanium-nickel alloy ingot with uniform composition. The smelted alloy ingot is cooled in the smelting furnace for 10 minutes and then taken out. Such as figure 1 As shown, it shows that with the increase of nickel content, the content of C14 phase in the alloy increases. The prepared zirconium-titanium-nickel alloy consists of two phases: α phase and C14 phase. Such as Figure 4 As shown, it shows that the metallographic microstructure of the prepared zirconium-titanium-nickel alloy is composed of flaky α phase and C14 compound. Such as Figure 5 As shown,...

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Abstract

The invention discloses zirconium-titanium-nickel alloy which is prepared from the following chemical components in percentage by mass: 47 percent to 50.5 percent of zirconium, 47 percent to 50.5 percent of titanium, 0.5 percent to 5.5 percent of nickel, and the balance of inevitable impurities. A preparation method of the zirconium-titanium-nickel alloy comprises the following steps: mixing the raw materials to obtain a mixture, putting the mixture into a vacuum non-consumable melting furnace and smelting for 6 times to ensure that the vacuum degree is 5.0x10<-3> Pa; carrying out arc striking on a tungsten electrode, enabling the current of a smelting electrode to be kept at 190A and 220 A, wherein the smelting time is 3 minutes every time; waiting casting ingots to be cooled to a room temperature after each smelting is finished, and then smelting again to ensure that zirconium-titanium-nickel alloy ingot with uniform components is obtained. The method disclosed by the invention is simple and easy to operate, and the strength and the hardness of the crystals can be improved; wherein the compressive strength of the crystal is 1691MPa to 1900MPa, the elongation rate is 2.6 percent to 19.0 percent, and the Vickers hardness is 312HV to 370HV.

Description

technical field [0001] The invention belongs to the technical field of metal materials, in particular to an alloy and a preparation method thereof. Background technique [0002] Zirconium alloy has physical and chemical properties such as small neutron absorption cross-sectional area and corrosion resistance, and has important applications in the nuclear industry and the acetic acid industry in the chemical industry. Due to their physicochemical properties, zirconium alloys also have great application potential in the field of structural materials. However, the existing zirconium alloy grades are mainly aimed at nuclear and chemical industry applications. If the mechanical properties such as strength cannot meet the requirements well when used as a structural material, effective strengthening and toughening is required. Among them, alloying is an important toughness means of transformation. Contents of the invention [0003] The object of the present invention is to prov...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C14/00C22C16/00C22C30/00C22C1/02
CPCC22C1/02C22C14/00C22C16/00C22C30/00
Inventor 张新宇刘超秦家千马明臻刘日平
Owner YANSHAN UNIV
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