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High-strength high-elasticity copper-nickel-manganese alloy and preparing method thereof

A high-elasticity, copper-nickel-manganese technology, which is applied in the field of high-strength and high-elasticity copper-nickel-manganese alloy and its preparation, can solve the problems of reduced strength and elasticity of beryllium bronze, unable to meet high-temperature service conditions, endangering health and other problems, and achieves improved plasticity. , Ultra-high strength, reducing the effect of uneven composition

Active Publication Date: 2019-05-17
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the beryllium element in beryllium bronze is highly toxic and will seriously endanger human health; when the temperature reaches above 200°C, the strength and elasticity of beryllium bronze will drop sharply, and its stress relaxation rate will be as high as 40%, which will cause beryllium Bronze fails under high temperature service conditions and cannot meet the high temperature service conditions of the material

Method used

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  • High-strength high-elasticity copper-nickel-manganese alloy and preparing method thereof
  • High-strength high-elasticity copper-nickel-manganese alloy and preparing method thereof
  • High-strength high-elasticity copper-nickel-manganese alloy and preparing method thereof

Examples

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Effect test

Embodiment 1

[0033] In this embodiment, a high-strength and high-elastic copper-nickel-manganese alloy is composed of the following components by weight percentage: Ni20%, Mn20%, Nb0.3%, Cr0.3%, Zr0.1%, and the balance is Cu, each The sum of the mass percentages of the ingredients is 100%.

[0034] The preparation method of above-mentioned high-strength high-elasticity copper-nickel-manganese alloy, such as figure 1 shown, including the following steps:

[0035] (1) Vacuum melting: batching is carried out according to the components of the copper-nickel-manganese alloy, and the alloy is melted in a vacuum melting furnace at a melting temperature of 1250-1350°C to obtain an alloy solution;

[0036] (2) Casting: cast the alloy solution at 1100-1200°C, and obtain alloy ingots after cooling;

[0037] (3) Homogenization: the ingot is subjected to homogenization treatment, the homogenization temperature is 920° C., and the time is 8 hours to obtain a homogenized ingot;

[0038] (4) Hot-rolled...

Embodiment 2

[0047] In this embodiment, a high-strength and high-elastic copper-nickel-manganese alloy is composed of the following components by weight percentage: Ni18%, Mn18%, Nb0.5%, Cr0.5%, Zr0.2%, and the balance is Cu, each The sum of the mass percentages of the ingredients is 100%, and its preparation method is the same as in Example 1.

Embodiment 3

[0049] In this embodiment, a high-strength and high-elastic copper-nickel-manganese alloy is composed of the following components by weight percentage: Ni22%, Mn22%, Nb0.2%, Cr0.2%, Zr0.05%, and the balance is Cu, each The sum of the mass percentages of the ingredients is 100%, and its preparation method is the same as in Example 1.

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Abstract

The invention discloses a high-strength high-elasticity copper-nickel-manganese alloy and a preparing method thereof, and belongs to the technical field of special material preparing. Vacuum smeltingis adopted, gas and low-smelting impurities can be sufficiently exhausted, a billet structure can be purified, an ingot microstructure is subjected to homogenization treatment and then subjected to hot rolling, deforming cracking caused by nonuniform components can be reduced, and meanwhile through hot rolling, coarse grains in the alloy can be broken; through large deforming cold rolling, grainsin the alloy can be further broken, the fiber deformed microstructure is formed, the solid-solution treatment is used for enabling the alloy structure to be subjected to perfect recrystallization, meanwhile, solute atoms are re-dissolved into a base body, a supersaturation solid solution is formed, through aging treatment, the solute atoms are separated out in a form of a second phase, temperatureand time of aging are controlled, the separated-out second phase is fine and evenly distributed in the base body, and the alloy strength can be reinforced.

Description

technical field [0001] The invention belongs to the technical field of preparation of special materials, and in particular relates to a high-strength and high-elasticity copper-nickel-manganese alloy and a preparation method thereof. Background technique [0002] High-strength and high-elastic copper alloy is a kind of copper alloy with high strength and high elastic modulus. In addition to strength and elasticity, it also has excellent performance in fatigue resistance, corrosion resistance and wear resistance. It is mainly used in instruments, navigation , electronics, petrochemical, aerospace and other fields. Among them, the most widely used high-strength and high-elasticity copper alloy is beryllium bronze. Beryllium bronze is a high-elastic and high-strength copper alloy with excellent performance. However, the beryllium element in beryllium bronze is highly toxic and will seriously endanger human health; when the temperature reaches above 200°C, the strength and ela...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/06C22C9/05C22C1/02C22F1/08
Inventor 李周龚深肖柱刘斌唐帅康
Owner CENT SOUTH UNIV
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