Characteristics and process of high purity copper-titanium alloy
High-purity copper-titanium alloy is a copper-based alloy with special properties. It is an alloy material with ultra-high strength, good electrical conductivity, high elastic modulus, high bending performance and high stress relaxation performance. This alloy usually achieves its ultra-high strength and required physical properties through high-temperature solution treatment and subsequent aging treatment.
I. Characteristics of high-purity copper-titanium alloy
1. High-purity copper-titanium alloy exhibits excellent yield strength, elastic limit, electrical conductivity, ductility and fatigue resistance.
2. The alloy has good stress relaxation resistance and bending processability, high strength, and can surpass traditional high-performance copper alloys, such as beryllium copper alloy.
3. Copper-titanium alloy has high strength and good electrical conductivity, and its electrical conductivity can reach 12% IACS to 20% IACS.
4. The alloy density is about 8.70 g/cm³, and it has a high elastic modulus of about 127 GPa.
II. Preparation process requirements of high-purity copper-titanium alloy
1. The preparation process of high-purity copper-titanium alloy requires controlling the uniformity of composition and reducing metal oxidation during smelting.
2. An effective preparation method is to use vacuum consumable arc melting, which can ensure that the alloy material has the characteristics of low gas content, few inclusions and uniform structure.
3. During the preparation process, attention should also be paid to the vacuum degree during melting and the use of protective gas to reduce the oxygen content and prevent metal oxidation.
4. For high-performance ultrafine-grained copper-containing titanium alloys, researchers have developed a strategy of "eutectoid element alloying → quenching → hot deformation" (EQD), and achieved large-scale preparation of ultrafine-grained structure through conventional operation of hot processing equipment.
III. Application scenarios of high-purity copper-titanium alloys
1. Due to its high strength and high conductivity, high-purity copper-titanium alloys are suitable for connectors, camera modules and other components of electronic devices.
2. In the 3C field, such as smart phones, computers, etc., high-purity copper-titanium alloys are used to manufacture structural parts such as fuselage middle frames and hinges.
3. In the aerospace field, titanium alloys are widely used in aircraft structural parts, engine parts, etc. due to their lightweight and high strength characteristics.
4. Copper-titanium alloy can also be used to manufacture battery terminals, antenna terminals, SIM card connectors, etc., especially C1990HP and NKT322 alloys perform well in these applications.
The emergence of high-purity copper-titanium alloy heralds a new round of revolution in materials science. It is not just a simple combination of copper and titanium, but also a reflection of human beings' profound understanding of the laws of nature, and the crystallization of human wisdom and innovative spirit. With the continuous advancement of science and technology, we have reason to believe that high-purity copper-titanium alloy will show its unique charm in more unknown fields and contribute more possibilities to the future development of mankind.
