A kind of high-strength copper-titanium alloy and preparation method thereof

Abstract

The present invention provides a high-strength copper-titanium alloy and its preparation method. The alloy includes components and their mass percentages are: Cu powder: 60-63%, Ti powder: 37-40%. The preparation method is as follows: according to the proportion, mix Cu powder and Ti powder evenly to obtain a mixture, then press it into shape, the pressure is 35 to 100MPa, and the pressure is maintained for 10 to 30 minutes. After the alloy green body is obtained, it is sintered in an inert gas atmosphere. At a heating rate of 5 to 10°C / min, the temperature is raised from room temperature to a sintering temperature of 1085 to 1150°C. After sintering for 10 to 60 minutes, it is cooled and released from the furnace to produce a high-strength copper-titanium alloy. The high-strength copper-titanium alloy prepared by this method has extremely high strength and excellent toughness, as well as good brittleness and thermal conductivity. The raw materials are easily available and the mixing time is short. Through precise control of the sintering temperature, heating rate and holding time, the prepared alloy not only meets the requirements in composition but also has guaranteed performance.

Description

technical field [0001] The invention belongs to the technical field of metallurgy, and in particular relates to a high-strength and tough copper-titanium alloy and a preparation method thereof. Background technique [0002] Copper is a common metal in daily life. It has excellent electrical and thermal conductivity and ductility and corrosion resistance. It is widely used in electrical, electronic, construction, national defense and other fields. However, the strength of copper is very low, so its use alone is relatively limited. Considering the addition of other alloying elements to copper can improve the mechanical properties of copper, so that copper can have high strength while maintaining high electrical conductivity. The most common ones are alloys such as Be and Ti. Although copper-beryllium alloys have excellent physical and mechanical properties, beryllium has certain toxicity and will endanger human health during use. Therefore, it is of great practical significa...

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Problems solved by technology

[0003] Although there are many studies on copper and titanium, for a single Cu 4 Ti 3 There is still very little research

At present, most of the research on copper-titanium alloys is concentrated in the copper-rich region. In this region, only part of the titanium dissolves in the copper, and the solubility of titanium changes greatly with the change of temperature, so it is easy to carry out aging strengthening.

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