Today, China’s leading manufacturer of magnesium-lithium alloy forgings, ZZQY Light Alloy Technology Group, has successfully developed ultra-high-strength aluminum-lithium alloys and realized industrialized mass production, with a tensile strength of 695MPa, a yield strength of 566MPa, and an elongation rate of over 6%!
At present, the strength of the second-generation Al-Mg-Li alloy mainly used in aluminum-lithium alloys is 400-500MPa, and the strength of the third-generation Al-Cu-Li alloy is 500-600MPa. ZZQY adopts a new production process with independent intellectual property rights to achieve a breakthrough in ultra-high-strength aluminum-lithium alloy technology, which greatly improves the performance of aluminum-lithium alloys, and will fill the gap of 700MPa aluminum-lithium alloys under Chinese industrial conditions! Compared with the traditional 7 series super hard 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%, which can effectively replace the existing high-strength/super-high-strength aluminum alloy , Is of great significance to the aviation and aerospace fields where weight loss is urgent!
As a light-weight and high-strength metal structural material, aluminum-lithium alloy has very broad application prospects in the aerospace field. At present, in the field of aerospace, “gram-gram-calculation”, the rocket launch cost can be reduced by 20,000 US dollars for every 1kg weight loss of the rocket, and the missile’s range can be increased by 15km for every 1kg weight loss. 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 alloy instead of conventional aluminum alloy can reduce structural weight by 5% to 15% and increase stiffness by 15% to 20%. The weight reduction effect is immediate. It can significantly increase the payload of aerospace vehicles and has important economic benefits and strategic significance.
The ultra-high-strength aluminum-lithium alloy developed this time has four major advantages: low density, high modulus, high strength, and industrialized mass production. This mainly depends on the advanced nature of the preparation process. ZZQY through the development and continuous optimization of the production process, The “full vacuum melting and casting method” is adopted to solve the problems of easy hydrogen absorption, oxidation slagging, component segregation, and serious shrinkage porosity during the aluminum-lithium alloy melting and casting process, thereby preparing high-purity and high-quality alloy ingots for subsequent deformation processing. Performance aluminum-lithium alloy products provide a strong guarantee.
At present, ZZQY can provide a variety of grades of aluminum-lithium alloy plate, strip and foil, tube rod wire, forgings and other products in batches. At the same time, for the aluminum-lithium alloy pre-researched model, the company has the ability to develop the whole process from design drawings to parts delivery (melting and casting, forming, heat treatment, machining, surface processing, and testing).