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Structure and Properties of Al – Li Alloy after Different Artificial Ageing Regimes and Preliminary Tensile Deformation

  • ALUMINUM AND ITS ALLOYS
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Metal Science and Heat Treatment Aims and scope

The effect of preliminary 3% tension and artificial ageing regimes on the structure and properties of Al – Li alloy 2A93-T3 sheet is studied. Tensile tests and EBSD analysis of the alloy are conducted. Fracture surfaces are analyzed, and chemical element distribution within the structure is determined. It is established that preliminary tension facilitates failure of coarse T2 and R phases within the structure and formation of fine hardening δ'-phase, a large number of low-angle boundaries and a new S-texture, which increase alloy strength after ageing. A more effective two-stage artificial ageing regime is proposed.

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Authors and Affiliations

  1. College of Mechanical & Electrical Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing, 210016, Jiangsu, China

    Peng Zhang & Ming-He Chen

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  1. Peng Zhang
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  2. Ming-He Chen
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Correspondence to Peng Zhang.

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Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 5, pp. 10 – 15, May, 2022.

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Zhang, P., Chen, MH. Structure and Properties of Al – Li Alloy after Different Artificial Ageing Regimes and Preliminary Tensile Deformation. Met Sci Heat Treat 64, 252–257 (2022). https://doi.org/10.1007/s11041-022-00795-w

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