Hot forming method and device for large-size aircraft thin-walled part of high-strength aluminum alloy

    公开(公告)号:US12116658B2

    公开(公告)日:2024-10-15

    申请号:US17862769

    申请日:2022-07-12

    CPC classification number: C22F1/04 B21D22/022 C22F1/002

    Abstract: Solution heat treatment is performed on a blank to dissolve initial coarse secondary phases, to obtain a uniform solid solution microstructure. The blank subjected to the solution heat treatment is transferred into the temperature-controllable forming die to be stamped and quenched. During forming, the temperature and the pressure are further maintained for a period of time. The temperature of the forming die is adjusted to a second-step aging temperature for the second-step aging treatment. In a two-step aging temperature range, stress relaxation occurs while strengthening precipitates are rapidly precipitated, thereby improving strength and dimensional accuracy of the formed part. On the premise of ensuring quality of the formed part, employing stepped aging treatment shortens the aging cycle and reduces energy consumption in the production and manufacturing process.

    High strength aluminum stamping
    2.
    发明授权

    公开(公告)号:US12104238B2

    公开(公告)日:2024-10-01

    申请号:US18070159

    申请日:2022-11-28

    CPC classification number: C22F1/04 B21D22/022 C22F1/05 C21D1/673

    Abstract: The invention provides a component formed of an aluminum alloy for use in a vehicle, for example an automotive vehicle component requiring high strength, light-weight, and a complex three-dimensional shape, and a method of manufacturing the component. The method begins by providing a blank formed of an aluminum alloy which is already solution heat treated and tempered, and thus has a temper designation of about T4. The method further includes heating the blank to a temperature of 150° C. to 350° C., preferably 190° C. to 225° C. The method next includes quickly transferring the blank to a hot or warm forming apparatus, and stamping the blank to form the complex three-dimensional shape. Immediately after the forming step, the component has a temper designation of about T6, but preferably not greater than T6, and thus is ready for use in the vehicle without any post heat treatment or machining.

    Method for making a metal material composite

    公开(公告)号:US12083567B2

    公开(公告)日:2024-09-10

    申请号:US17917224

    申请日:2021-11-01

    CPC classification number: B21B1/38 B21B27/032 B32B15/012 C21D9/0081 C22F1/04

    Abstract: A method for making a metal material composite includes: contacting a first surface of a first plate with a second surface of a second plate; placing the first plate and the second plate in a recess in a circumferential direction of a first roller such that a third surface of the second plate contacts a bottom wall of the recess in a circumferential, the third surface being opposite the second surface, the first plate having a greater hardness than the second plate; and controlling a first roller and a second roller to rotate, thereby rolling to combine the first plate and the second plate into a composite plate, where a fourth surface of the first plate contacts a surface of the second roller and the fourth surface is opposite the first surface during the rolling.

    HIGH-PLASTICITY COMPOSITE MODIFIED ALUMINUM ALLOY PART AND PREPARATION METHOD THEREFOR

    公开(公告)号:US20240247339A1

    公开(公告)日:2024-07-25

    申请号:US18290412

    申请日:2022-12-23

    CPC classification number: C22C1/026 C22C1/03 C22F1/002 C22F1/04

    Abstract: The present invention provides a high-plasticity composite modified aluminum alloy product and a preparation method therefor. Wherein, the preparation method includes the following steps: step S1, providing an aluminum alloy melt; step S2, providing a modifier; step S3, adding the modifier to the aluminum alloy melt under an inert gas atmosphere and melting, to obtain a modified aluminum alloy melt; step S4, performing casting by using the modified aluminum alloy melt, to obtain the cast aluminum alloy blank; and step S5, performing a heat treatment on the modified aluminum alloy blank, wherein, the heat treatment includes: a solution treatment, involving heating the aluminum alloy blank to 530° C.-550ºC, and maintaining the temperature for 120-300 min; a water quenching treatment, involving adding the aluminum alloy blank after the solution treatment into a water bath with the temperature of 60° C.-70° ° C., and water quenching same for 2-4 min; an aging treatment, involving maintaining the aluminum alloy blank after the water quenching treatment at 110° C.-140° ° C. for 120-240 min, then further raising the temperature to 160° C.-200° C. and maintaining the temperature for 20-60 min, and then cooling to room temperature to obtain the high-plasticity composite modified aluminum alloy part.

    FRICTION STIR WELDING PROCESS FOR LARGE METALLIC COMPONENTS

    公开(公告)号:US20240131615A1

    公开(公告)日:2024-04-25

    申请号:US18319572

    申请日:2023-05-17

    CPC classification number: B23K20/126 B32B15/016 C22F1/04 B23K2101/185

    Abstract: A method for forming a large metallic component, a friction stir welded component and a friction stir welded blank are provided. The method includes positioning a first metallic plate and a second metallic plate in an abutting arrangement. The first metallic plate and the second metallic plate have corresponding faying surfaces at a point of abutment. A backing plate is attached spanning the point of abutment adjacent the faying surfaces. The first metallic plate is friction stir welded to the second metallic plate to form a friction stir weld along the faying surfaces. The backing plate receives an end of a friction stir welding tool curing the friction stir welding. The backing plate is removed to form a welded blank. The welded blank is formed into a component form. The component is heat treated and aged to form the large metallic component. The friction stir weld in the welded blank has a stable microstructure having little or no abnormal grain growth during elevated temperature forming, heat treatment and aging.

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