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Short flow preparation method of high-strength and high-elasticity Cu-Ni-Mn alloy

A cu-ni-mn, high-elasticity technology, applied in the field of copper alloy materials, can solve the problems of easy oxidation, gas absorption, casting and preparation of Cu-Ni-Mn alloy materials, etc., achieve high strength, shorten the process flow, improve The effect of mechanical properties

Active Publication Date: 2020-07-03
UNIV OF SCI & TECH BEIJING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, as mentioned above, it has been difficult to prepare Cu-Ni-Mn alloy materials under non-vacuum conditions due to the fact that Cu-Ni-Mn alloys are easily oxidized and gas-absorbed when smelted in the atmosphere.

Method used

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  • Short flow preparation method of high-strength and high-elasticity Cu-Ni-Mn alloy
  • Short flow preparation method of high-strength and high-elasticity Cu-Ni-Mn alloy
  • Short flow preparation method of high-strength and high-elasticity Cu-Ni-Mn alloy

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preparation example Construction

[0022] Such as figure 1 Shown, the short process preparation method of high-strength high-elasticity Cu-Ni-Mn alloy of the present invention, this method specifically comprises the following steps:

[0023] S1) using copper, nickel, manganese, and aluminum metals as raw materials, using a hot-cold combined mold non-vacuum continuous casting process to prepare alloy rods;

[0024] S2) performing solution treatment on the alloy bar of S1), and then performing cryogenic rolling to obtain a cold-rolled alloy plate with a thickness of 0.5-2mm;

[0025] S3) Perform aging heat treatment on the cold-rolled alloy sheet obtained in S2), to obtain a Cu-Ni-Mn alloy with high strength and high elasticity.

[0026] The mass percentages of each component of the raw materials in S1) are: Cu 45-70%, Ni 14-26%, Mn 14-26%, Al 0.1-5%, and the purity is greater than 99.9%.

[0027] The S1) raw material also includes boron with a purity greater than 99.9%, and the mass percentage is: 0.001-0.3%. ...

Embodiment 1

[0035] Example 1: Cu-20Ni-20Mn alloy

[0036] Prepare Cu-20Ni-20Mn alloy, comprises the steps:

[0037] (1) Continuous casting process: using pure copper, pure nickel, pure manganese, pure aluminum, and pure boron with a purity greater than 99.9% as raw materials, according to the main components, Cu element is 60wt%, Ni element is 20wt%, and Mn element is 20wt% %, is prepared by using hot-cold combined mold non-vacuum continuous casting process, the drawing temperature is 1250°C, the drawing speed is 1mm / s, and the cooling water is 600L / h, and a rod with a diameter of 20mm is obtained.

[0038] (2) Deformation process: After the alloy bar is subjected to solution treatment, it is subjected to 10 passes of deep cold rolling deformation at a temperature of -190 ° C, with a total deformation of 75%, and a cold-rolled alloy plate with a thickness of 1.5 mm is obtained;

[0039] (3) Aging heat treatment: Heat the alloy plate after solution treatment and deep cold rolling to 400°C...

Embodiment 2

[0044] Example 2: Cu-20Ni-20Mn-0.05Al alloy

[0045] Prepare Cu-20Ni-20Mn-0.05Al alloy, comprising the following steps:

[0046] (1) Continuous casting process: using pure copper, pure nickel, pure manganese, pure aluminum, and pure boron with a purity greater than 99.9% as raw materials, according to the main components, the Cu element is 59wt%, the Ni element is 20wt%, and the Mn element is 20wt% %, the Al element is 0.05wt%, and it is prepared by hot-cold combined casting mold non-vacuum continuous casting process. The drawing temperature is 1250°C, the drawing rate is 1mm / s, and the cooling water is 600L / h, and a rod with a diameter of 20mm is obtained. .

[0047] (2) Deformation process: After the alloy bar is subjected to solution treatment, it is subjected to 10 passes of deep cold rolling deformation at a temperature of -190 ° C, with a total deformation of 75%, and a cold-rolled alloy plate with a thickness of 1.5 mm is obtained;

[0048](3) Aging heat treatment: He...

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Abstract

The invention belongs to the technical field of copper alloy materials, and particularly relates to a short flow preparation method of a high-strength and high-elasticity Cu-Ni-Mn alloy. The method specifically comprises the following steps that S1), copper, nickel, manganese, aluminum and / or boron with the purity of greater than 99% are used as raw materials, a heating-cooling combined mold non-vacuum continuous casting process is used for preparing, and an alloy bar is obtained; and S2), after the alloy bar obtained in the step S1 is subjected to solid solution treatment, the alloy bar is subjected to deep cold rolling, and a cold-rolled alloy plate with the thickness of 0.5-2 mm is obtained; and S3), aging heat treatment is carried out on the cold-rolled alloy plate obtained in the stepS2, and the high-strength high-elasticity Cu-Ni-Mn alloy is obtained. According to the method, on the basis of high strength, elastic modulus and low cost of the Cu-Ni-Mn alloy, the mechanical property is further improved; and meanwhile, the continuous casting technology is utilized, the technological process is shortened, the preparation condition is reduced, and the method has remarkable technical beneficial effects.

Description

technical field [0001] The invention belongs to the technical field of copper alloy materials, and in particular relates to a short-process preparation method of a high-strength and high-elasticity Cu-Ni-Mn alloy. Background technique [0002] At present, Cu-Ni-Mn alloy is an important elastic copper alloy material, which has the characteristics of high strength, high elasticity, high working temperature, good stress corrosion resistance, good electrical and thermal conductivity, non-magnetic and non-toxic. Cu-Ni-Mn alloy is a precipitation-strengthening alloy, and its heat treatment sensitivity is low, and it can be solid solution treated by cooling in air after heating. During the aging treatment, the alloy first forms an amplitude-modulated structure through periodic segregation of solute atoms. With the prolongation of the aging time, the amplitude-modulated structure gradually evolved into a precipitated phase with a face-centered tetragonal structure mainly composed o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C9/05C22C9/06C22C30/02C22F1/08B22D11/00
CPCB22D11/004C22C9/05C22C9/06C22C30/02C22F1/08
Inventor 刘新华解国良汪锐谢建新
Owner UNIV OF SCI & TECH BEIJING
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