695MPa! Zhengzhou Qingyan Alloy successfully developed ultra-high strength aluminum-lithium alloy!

Time：2020-08-06

Recently, Zhengzhou Qingyan Alloy has successfully developed ultra-high strength aluminum-lithium alloy and realized industrial mass production. The tensile strength is 695Mpa, the yield strength is 566Mpa, and the elongation< strong>6% or more!

The strength of the second-generation Al-Mg-Li alloy mainly used in Al-Li alloys is 400-500MPa, and the strength of the third-generation Al-Cu-Li alloy is 500-600MPa. Zhengzhou Qingyan Alloy adopts a new production process with independent intellectual property rights, and has achieved a technological breakthrough in ultra-high strength aluminum-lithium alloys, which has greatly improved the performance of aluminum-lithium alloys. It will fill the gap of 700MPa aluminum-lithium alloys under domestic industrial conditions /strong>! Compared with the traditional 7-series superhard aluminum alloy (7075), the density is reduced by 5%, the tensile strength is increased by 30%, the yield strength is increased by 20%, and the elastic modulus is increased by 7%. It can effectively replace the There are high-strength/ultra-high-strength aluminum alloys, which are of great significance for the aviation and aerospace fields where weight reduction is urgent!

As a lightweight and high-strength metal structural material, aluminum-lithium alloy has a very broad application prospect in the aerospace field. At present, in the aerospace field, every 1kg of rocket weight loss can reduce the launch cost by $20,000, and every 1kg of missile weight loss can increase the range of 15km. For every 1% lithium added to the aluminum alloy, the density decreases by 3% and the elastic modulus increases by 6%. The use of aluminum-lithium alloys instead of conventional aluminum alloys can reduce the weight of the structure by 5%~15% and increase the stiffness by 15%~20%. economic and strategic significance.

The ultra-high-strength aluminum-lithium alloy developed this time has four advantages: low density, high modulus, high strength, and industrialized mass production, which mainly depends on the preparation process Through the research, development and continuous optimization of the production process, Zhengzhou Qingyan Alloy Technology Co., Ltd. adopts the “full vacuum casting method” to solve the problem that the aluminum-lithium alloy is easy to absorb hydrogen, Oxidation slag, composition segregation, serious shrinkage porosity and other problems, so as to prepare highly purified and high-quality alloy ingots, which provides a strong guarantee for the subsequent deformation processing to prepare high-performance aluminum-lithium alloy products.

At present, the company can provide 1420, 2195 and other grades of aluminum-lithium alloy sheet and strip foil, tube rod wire, forgings and other products in batches. At the same time, for aluminum-lithium alloy pre-research models, the company has the ability to develop the whole process from design drawings to parts delivery (casting, machining, heat treatment, machining, surface treatment, and testing).

Zhengzhou Qingyan Alloy Technology Co., Ltd. adheres to “Leading the future with science and technology, developing lighter, stronger and more cost-effective high-performance non-ferrous alloys, and continuously creating value for customers” , take the development of new materials, new technologies and new products required for the construction of national defense and military industry as its own responsibility, and focus on the research, development and production of high-quality, light-weight and high-strength alloy materials such as aluminum-lithium, magnesium-lithium, magnesium-lithium and rare earth. Reduce weight for Chinese manufacturing and help China's aerospace industry flourish!

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