Research Progress of Cryogenic Forming and Manufacturing of High-strength Aluminum Alloy Thin-walled Components

doi:10.3901/JME.2025.14.001

Abstract

Abstract: Aerospace vehicles place higher demands on the manufacturing process and service for traditional high-strength aluminum alloy thin-walled components in terms of new concept, long life and reliability. The implementation of high-performance forming methods currently shows an urgent problem that needs to be solved for such complex components. First, the huge challenges were analyzed for the overall forming of high-strength aluminum alloy thin-walled components. Based on the discovery of the dual enhancement effect of aluminum alloys at cryogenic temperatures, the proposal background is summarized for the cryogenic forming technology. Then, comprehensive analyses on the dual enhancement effect and micro deformation mechanism were conducted for aluminum alloys at cryogenic temperatures by domestic and foreign scholars in recent years. Also, the in-situ testing method for macro and micro cryogenic deformations, cryogenic forming process and key technology, cryogenic forming equipment and typical applications were studied. Finally, the future development was discussed for the cryogenic forming of aluminum alloys. These researches can provide a new approach for the manufacture of aluminum alloy complex integral-curved components relating to aerospace vehicles, electric vehicles and new energy storage and transportation equipment.

Key words: cryogenic forming, high-strength aluminum alloy, thin-walled component, process and equipment, dual enhancement effect

CLC Number:

LIU Wei, CHENG Wangjun, YUAN Shijian. Research Progress of Cryogenic Forming and Manufacturing of High-strength Aluminum Alloy Thin-walled Components[J]. Journal of Mechanical Engineering, 2025, 61(14): 1-19.

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