Nickel-cobalt-iron-gallium hyperelastic alloy material and preparation method thereof

A technology of superelastic alloys and alloy materials, applied in the field of alloys, can solve the problems of high internal friction and high cost of titanium-nickel alloys, and achieve the effects of low cost and simple preparation method

Inactive Publication Date: 2012-02-01
BEIJING INSTITUTE OF TECHNOLOGYGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although it has good superelastic behavior and wide application prospects, the cost of titanium-nickel alloys is high; at the same time, as a typical traditional superelastic alloy based on thermoelastic martensitic transformation,...

Method used

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  • Nickel-cobalt-iron-gallium hyperelastic alloy material and preparation method thereof
  • Nickel-cobalt-iron-gallium hyperelastic alloy material and preparation method thereof
  • Nickel-cobalt-iron-gallium hyperelastic alloy material and preparation method thereof

Examples

Experimental program
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Embodiment 1

[0025] Step 1: Smelting suction casting

[0026] Select nickel with a purity of 99.9%, cobalt with a purity of 99.99%, gallium with a purity of 99.99%, and iron with a purity of 99.9%, according to Ni 55-x co x Fe 18 Ga 27 , x = 7-9 atomic percentage content ratio, using an electronic balance to be accurate to 0.1 mg ingredients; -4 Pa, then filled with argon, repeated smelting for 5 times to make button-shaped materials; The water-cooled mold is quickly suction-cast into a rod-shaped nickel-cobalt-iron-gallium alloy with a diameter (Φ) of 4mm.

[0027] Step 2: Annealing

[0028] The rod-shaped nickel-cobalt-iron-gallium alloys were respectively sealed in test tubes and evacuated to 5×10 -5 Pa, at 1000°C, keep it warm for 72 hours, and then slowly cool to room temperature with the furnace to get Ni 55-x co x Fe 18 Ga 27 The superelastic alloy material, where x=7-9, is a nickel-cobalt-iron-gallium superelastic alloy material described in the present invention.

[002...

Embodiment 2

[0032] Step 1: Smelting suction casting

[0033] Select nickel with a purity of 99.9%, cobalt with a purity of 99.99%, gallium with a purity of 99.99%, and iron with a purity of 99.9%. 55-x co x Fe 18 Ga 27 , x = 10-12 atomic percentage content ratio, using an electronic balance to be accurate to 0.1 mg of ingredients; -4 Pa, then filled with argon, repeated smelting for 5 times to make button-shaped materials; The water-cooled mold is quickly suction-cast into a rod-shaped nickel-cobalt-iron-gallium alloy with a diameter of 4mm.

[0034] Step 2: Annealing

[0035] The rod-shaped nickel-cobalt-iron-gallium alloys were respectively sealed in test tubes and evacuated to 5×10 -5 Pa, at 1000°C, keep it warm for 72 hours, and then slowly cool to room temperature with the furnace to get Ni 55-x co x Fe 18 Ga 27 The superelastic alloy material, where x=10-12, is a nickel-cobalt-iron-gallium superelastic alloy material described in the present invention.

[0036] In the Ni ...

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Abstract

The invention relates to a nickel-cobalt-iron-gallium hyperelastic alloy material and a preparation method thereof, belonging to the technical field of alloy. The alloy material is a Ni55-xCoxFe18Ga27 hyperelastic material, wherein when x ranges from 7 to 12, the alloy material comprises hyperelastic actions at room temperature; when x ranges from 10 to 12, the alloy material comprises narrow-hysteresis hyperelastic actions at room temperature; and the alloy material comprises no martensitic phase transformation actions at the temperature ranging from 0K to 298K. The alloy material is obtained through smelting, suction casting and annealing treatment in sequence. The alloy material disclosed by the invention has lower cost in comparison with NiTi series of hyperelastic alloy, so that low price and popularization of hyperelastic alloy for daily use are hopefully achieved; the alloy material has the advantages of narrow-hysteresis hyperelastic actions, low internal friction and capability of being widely applied to industrial production; and moreover, the alloy material is simple in preparation method and low in cost.

Description

technical field [0001] The invention relates to a nickel-cobalt-iron-gallium superelastic alloy material and a preparation method thereof, in particular to a method of changing and controlling the martensitic phase transition temperature of the alloy by adding cobalt (Co) to partially replace nickel (Ni), Therefore, the nickel-cobalt-iron-gallium superelastic alloy with good superelastic behavior at room temperature is obtained, which belongs to the field of alloy technology. Background technique [0002] Superelastic alloys are widely used in the fields of aviation, machinery, chemical industry and precision instruments because of their high recoverable pseudoelastic deformation. [0003] At present, the most common superelastic alloys are titanium-nickel alloys. There is thermoelastic martensite in titanium-nickel alloys, because the martensitic phase transition temperature varies in a wide range with different alloy compositions, so titanium-nickel alloys not only have a...

Claims

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Application Information

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IPC IPC(8): C22C19/03C22C30/00C22C1/02C22F1/10
Inventor 聂志华王沿东王东平陈欣
Owner BEIJING INSTITUTE OF TECHNOLOGYGY
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