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High-strength and high-toughness copper alloy material and preparation method thereof

A technology of alloy materials and high-toughness copper, which is applied in the field of non-ferrous metal material preparation, can solve the problems of easy gas absorption, adverse effects on final product performance, and high cost, and achieve no reduction in strength, no solid solution process, and β-phase stability high effect

Active Publication Date: 2021-11-05
JIANGXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since this type of alloy contains Ni, Sn and other metals, not only the cost is high, but also it is easy to absorb gas during smelting and casting, which has a bad influence on the performance of the final product.

Method used

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  • High-strength and high-toughness copper alloy material and preparation method thereof

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preparation example Construction

[0035] The preparation method of the high-strength and high-toughness copper alloy comprises the following steps:

[0036] 1) batching according to the formula of alloying elements; 2) melting according to the formula of alloying elements to obtain molten alloying elements and casting; 3) then performing hot rolling; and / or, hot extrusion; 4) then heating; 5) then Hot rolling; and / or, hot extrusion; 6) Finally, critical temperature processing.

[0037] According to a preferred embodiment of the present invention, preferably, the smelting process of step 2) includes: melting the copper first, and completely covering the melt surface with charcoal after the copper is melted. Then add electrolytic manganese, the electrolytic manganese should be wrapped with copper foil, and then added to the melt in batches. After the electrolytic manganese is added, the electrolytic manganese bag should be pressed into the liquid surface, so that the electrolytic manganese is completely melted ...

Embodiment 1

[0048] The ingredients of the alloy in the invention are as follows: Al: 8%, Mn: 10%, and the balance is Cu.

[0049] The specific production process of the alloy is: batching→smelting and casting→hot rolling heating→hot rolling→critical warm rolling.

[0050] Melting: First melt the copper, and after the copper is melted, completely cover the liquid surface of the melt with charcoal. Then add electrolytic manganese, the electrolytic manganese should be wrapped with copper foil, and then added to the melt in batches. After the electrolytic manganese is added, the electrolytic manganese bag should be pressed into the liquid surface, so that the electrolytic manganese is completely melted under the liquid surface, and the oxidation of manganese is prevented. Aluminum is then added, and the melt is stirred after adding aluminum to prevent local overheating; casting is carried out.

[0051] Hot rolling: the heating temperature of the hot rolling is 800° C., and the heating time ...

Embodiment 2

[0054] The ingredients of the alloy in the present invention are as follows: Al: 10%, Mn: 11%, and the balance is Cu.

[0055] The specific production process of the alloy is: batching→smelting and casting→hot rolling heating→hot rolling→critical warm rolling.

[0056] Melting: First melt the copper, and after the copper is melted, completely cover the liquid surface of the melt with charcoal. Then add electrolytic manganese, the electrolytic manganese should be wrapped with copper foil, and then added to the melt in batches. After the electrolytic manganese is added, the electrolytic manganese bag should be pressed into the liquid surface, so that the electrolytic manganese is completely melted under the liquid surface, and the oxidation of manganese is prevented. Aluminum is then added, and the melt is stirred after adding aluminum to prevent local overheating; casting is carried out.

[0057] Hot rolling: the heating temperature of the hot rolling is 750° C., and the heat...

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Abstract

The invention relates to the technical field of preparation of non-ferrous metal materials, and discloses a high-strength and high-toughness copper alloy material and a preparation method thereof. The chemical elements contained in the copper alloy material in proportion by mass fraction are: Al: 8-10%, Mn: 10‑11%, the balance being Cu. The preparation method of the high-strength and high-toughness copper alloy material provided by the invention can enhance the plasticity of the alloy. Compared with the commonly used high-strength copper alloy, the copper alloy material of the invention has lower cost, more corrosion resistance, good plasticity, no elements harmful to the environment, and tensile strength. Strength ≥ 1050MPa, elongation ≥ 10.5%, anti-softening temperature over 350 ℃. Based on these characteristics, the high-strength and high-toughness copper alloy material provided by the present invention can be applied to parts that have high requirements on strength and plasticity and work in corrosive and high-temperature environments, such as load-bearing parts, wear-resistant parts, high-strength springs for chemical equipment Gaskets, contact springs, instrumentation components in corrosive environments.

Description

technical field [0001] The invention belongs to the field of preparation of nonferrous metal materials, in particular to a high-strength and high-toughness copper alloy material and a preparation method thereof. Background technique [0002] CuAlMn alloy has always been an important structural material in industrial heavy-duty equipment due to its high strength, corrosion resistance, and non-magnetic characteristics. Cushioning and energy storage occasions such as elastic contact sheets, spring washers, and elastic energy storage devices in corrosive environments. With the increasing requirements for the use of related equipment and instruments in industrial production and the increasingly harsh use environment, higher performance requirements are put forward for this type of CuAlMn alloy, including higher strength and plasticity. [0003] At present, the commonly used aluminum bronze high-strength copper alloy has a composition range of 6-8% Al, a Mn content of less than 5...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/05C22C1/02C22F1/08
CPCC22C1/02C22C9/05C22F1/08
Inventor 魏海根夏福中
Owner JIANGXI UNIV OF SCI & TECH
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