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A kind of high-strength and high-conductivity rare earth copper-zirconium alloy and its preparation method

A technology of copper-zirconium alloy and zirconium alloy, which is applied in the field of high-strength and high-conductivity rare earth copper-zirconium alloy and its preparation, can solve the problems of low electrical conductivity and elongation, low tensile strength, low strength and hardness, etc., and achieve high elongation , Improve the strength and conductivity, and improve the effect of strength

Inactive Publication Date: 2017-08-25
HENAN UNIV OF SCI & TECH
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide high-strength rare earth copper-zirconium alloy and its preparation method, to solve the problems of low tensile strength, low electrical conductivity and elongation, and low strength and hardness of traditional copper-zirconium alloys, so as to meet the needs of lead frame copper alloys. Require

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  • A kind of high-strength and high-conductivity rare earth copper-zirconium alloy and its preparation method

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preparation example Construction

[0024] A method for preparing a high-strength and high-conductivity rare earth copper-zirconium alloy, comprising the following steps:

[0025] Step 1. Preparation of master alloy: put copper and zirconium into a vacuum non-consumable electrode arc melting furnace for melting, vacuumize the furnace until the pressure is 5×10-2Pa, and then fill the furnace with argon until the pressure in the furnace is 0.05 MPa, heated to 1050~1100℃, smelted for 0.5~1h, and obtained Cu-Zr master alloy after natural cooling, for later use; put copper and rare earth elements into a vacuum non-consumable electrode arc melting furnace for melting, and vacuumize the furnace The internal pressure is 5×10-2Pa, then fill the furnace with argon until the pressure in the furnace is 0.05MPa, heat to 1030~1070°C, melt for 0.5~1h, and naturally cool to obtain Cu-rare earth master alloy for later use; Put it into a vacuum non-consumable electrode arc melting furnace for melting, evacuate to a pressure of 5×...

Embodiment 1

[0037]A high-strength and high-conductivity rare earth copper-zirconium alloy is composed of the following components by weight percentage: 0.1% zirconium, 0.1% nickel, 0.1% silicon, 0.1% silver, 0.05% cerium, and the balance is copper.

[0038] The specific preparation method is:

[0039] Step 1. Preparation of master alloy: put copper and zirconium in a vacuum non-consumable electrode arc melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1050°C, smelted for 1h, and cooled naturally to obtain a Cu-Zr master alloy for later use; put copper and rare earth into a vacuum non-consumable electrode arc melting furnace Smelting in the furnace, vacuuming until the pressure in the furnace is 5×10 -2 Pa, then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1030°C, smelted for 0.5h, and cooled naturally to obtain a Cu-rare earth master alloy ...

Embodiment 2

[0047] A high-strength and high-conductivity rare earth copper-zirconium alloy is composed of the following components in weight percentage: 0.15% zirconium, 0.15% nickel, 0.1% silicon, 0.15% silver, 0.05% lanthanum, and the balance is copper.

[0048] The specific preparation method is:

[0049] Step 1. Preparation of master alloy: put copper and zirconium in a vacuum non-consumable electrode arc melting furnace for melting, and vacuumize until the pressure in the furnace is 5×10 -2 Pa, then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1080°C, smelted for 1h, and cooled naturally to obtain a Cu-Zr master alloy for later use; put copper and rare earth into a vacuum non-consumable electrode arc melting furnace Smelting in the furnace, vacuuming until the pressure in the furnace is 5×10 -2 Pa, then filled with argon until the pressure in the furnace is 0.05MPa, heated to 1030°C, smelted for 0.5h, and cooled naturally to obtain a Cu-rare earth master...

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Abstract

A high-strength and high-conductivity rare earth copper-zirconium alloy. The copper-zirconium alloy is composed of zirconium, nickel, silicon, copper and rare earth elements. 0.1~0.5%, silicon 0.1~0.15%, silver 0.2~0.4%, rare earth elements 0.02~0.1%, and the balance is copper. Beneficial effects of the invention: the invention has the characteristics of simple preparation process, short process flow, high strength, high conductivity, high elasticity, excellent thermal processing performance, etc., and its tensile strength can reach 690 MPa.

Description

technical field [0001] The invention relates to the technical field of copper alloy materials, in particular to a high-strength and high-conductivity rare earth copper-zirconium alloy and a preparation method thereof. Background technique [0002] Cu-Zr alloys are a class of alloys with high strength and high conductivity that are widely used. They are currently widely used in lead frames for large-scale integrated circuits, contact wires for trams and electric locomotives, and electrical contact alloys. As the main material of large-scale integrated circuits, lead frame copper alloy has higher and higher performance requirements. However, there are many traditional alloys with low tensile strength, low conductivity and elongation, or low strength and hardness. The problem, therefore, is that it is urgent to develop a new copper alloy with high strength and high lead frame material. Contents of the invention [0003] The technical problem to be solved by the present inven...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C9/06C22C9/00C22C1/03C22F1/08
Inventor 张毅柴哲孙慧丽田保红刘勇刘平许倩倩龙永强
Owner HENAN UNIV OF SCI & TECH
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