High-strength copper-titanium alloy and preparation method thereof

A copper-titanium alloy, high-strength technology, applied in the field of high-strength copper-titanium alloy and its preparation, can solve the problem that the aging process has no obvious influence, achieve the effect of improving casting and processing performance, and improving the effect of solid solution strengthening

Inactive Publication Date: 2015-06-03
TIANJIN UNIVERSITY OF TECHNOLOGY
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  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

Some researchers added rare earth to the binary copper-titanium alloy, which only improved the grain size of the alloy, but h

Method used

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Experimental program
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Effect test

Embodiment 1

[0021] A high-strength copper-titanium alloy, consisting of copper, titanium and a third alloying element, wherein the mass percentage content of titanium is 3.0%, the third alloying element is Al, the mass percentage content is 1.5%, and copper is the balance; preparation The method steps are as follows:

[0022] 1) First put Cu into the vacuum induction furnace for smelting. The melting temperature is 1250°C. After melting, add titanium and stir well. Obtain copper-titanium alloy ingot;

[0023] 2) Milling the above-mentioned copper-titanium alloy ingot to remove surface casting defects;

[0024] 3) Hot rolling the copper-titanium alloy ingot after face milling, the heating temperature is 950°C, the holding time is 1h, the processing rate is 70%, and the copper-titanium alloy plate is obtained;

[0025] 4) The above-mentioned copper-titanium alloy plate is subjected to solution treatment at a temperature of 880°C, the holding time is 2h, and the cooling method is water coo...

Embodiment 2

[0029] A high-strength copper-titanium alloy consisting of copper, titanium and a third alloying element, wherein the mass percentage content of titanium is 4.0%, the third alloying element is Sn, Al, the mass percentage content of Sn is 0.5%, and the mass percentage content of Al is The percentage content is 1.0%, and copper is the balance; the preparation method steps are as follows:

[0030] 1) First put Cu into the vacuum induction furnace for smelting, the melting temperature is 1250°C, add titanium after melting, stir well, press Al into the melt with a bell jar before taking out the furnace, add Sn after full stirring, and cast after standing for 10 minutes , the casting temperature is 1200°C to obtain a copper-titanium alloy ingot;

[0031] 2) Milling the above-mentioned copper-titanium alloy ingot to remove surface casting defects;

[0032] 3) Hot rolling the copper-titanium alloy ingot after face milling, the heating temperature is 900°C, the holding time is 1h, the...

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PUM

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Abstract

The invention discloses a high-strength copper-titanium alloy, which consists of the following components in percentage by mass: 0.2 to 5.0 percent of titanium, 0 to 3 percent of third alloy elements and the balance of copper, wherein the third alloy elements are Al, Sn and Zn. A preparation method comprises the following steps: adding Cu into a vacuum induction electric furnace for smelting, sequentially adding titanium and the third alloy elements, and performing casting to obtain a copper-titanium alloy ingot; performing surface milling and hot rolling to obtain a copper-titanium alloy plate; performing solid solution treatment, cold rolling and aging treatment to obtain the high-strength copper-titanium alloy. The high-strength copper-titanium alloy and the preparation method thereof have the advantages that a TiAl intermetallic compound is taken as a synergistically enhanced precipitated phase, so that the enhancement effects of a second precipitated phase of the copper-titanium alloy are improved; the prepared copper-titanium alloy has tensile strength of 550 to 800 Mpa and plastic elongation of 2 to 10 percent, and can be used for preparing various elastic spring pieces, explosion-proof tools and plug connectors.

Description

technical field [0001] The invention relates to a beryllium-free copper alloy and a preparation method thereof, in particular to a high-strength copper-titanium alloy and a preparation method thereof. Background technique [0002] Beryllium bronze is a special kind of bronze, which is a typical precipitation hardening high conductivity and high elasticity copper alloy. This alloy has good comprehensive properties. In addition to its high strength, elasticity, hardness, wear resistance and fatigue resistance, it also has excellent electrical conductivity, thermal conductivity, corrosion resistance, high and low temperature resistance, and non-magnetic properties. , Does not produce sparks and other characteristics when impacting. Used in the manufacture of precision instruments, various parts, such as bearings, gears, special non-sparking tools, etc., are indispensable and irreplaceable materials in various industrial fields. Beryllium bronze has good performance. But its...

Claims

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Application Information

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IPC IPC(8): C22C9/00C22C1/02C22F1/08
Inventor 姜训勇李振华张楠柏杨王倩刘庆锁
Owner TIANJIN UNIVERSITY OF TECHNOLOGY
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