Constellium has been granted a patent for an aluminum-based alloy product with specific composition and properties. The product, with a thickness of at least 25mm, shows high strength, toughness, and resistance to environmentally assisted cracking. The method of making such a product is also covered by the patent. GlobalData’s report on Constellium gives a 360-degree view of the company including its patenting strategy. Buy the report here.
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According to GlobalData’s company profile on Constellium, was a key innovation area identified from patents. Constellium's grant share as of May 2024 was 46%. Grant share is based on the ratio of number of grants to total number of patents.
Patent granted for aluminum alloy product with specific properties
A recently granted patent (Publication Number: US11976347B2) discloses an extruded, rolled, and/or forged aluminum-based alloy product with a minimum thickness of 25 mm. The alloy composition includes specific weight percentages of Zn, Mg, Cu, Zr, Mn, Ti, V, Fe, and Si, with strict limits on impurities. Notably, the product is designed to exhibit exceptional properties such as resistance to Environmentally Assisted Cracking (EAC) under high-stress conditions, tensile yield strength, and K1C toughness in specific directions based on the product's thickness. The patent emphasizes the importance of the Cu to Mg ratio, with various claims specifying ranges and ratios to achieve the desired mechanical properties.
Furthermore, the patent covers a structural member suitable for aircraft construction, highlighting the application of the alloy product in wing ribs, spars, and frames. The manufacturing process outlined in the patent involves casting an ingot with precise alloy composition, followed by homogenization, hot working, solution heat treatment, quenching, stretching, and artificial aging to achieve the desired properties. Specific parameters such as hot working entry temperature, solution heat treatment temperature, and equivalent aging time are detailed to ensure the product meets the specified requirements. Overall, the patent provides a comprehensive guide for producing high-performance aluminum-based alloy products suitable for demanding applications in the aerospace industry, emphasizing the importance of alloy composition and processing parameters in achieving the desired mechanical properties and performance characteristics.
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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.
