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Mechanical properties of rolled and aged AA6061 sheets at room-temperature and cryogenic environments

Journal Article


Abstract


  • We prepared AA6061 sheets by room-temperature rolling and low-temperature aging. We tested the tensile mechanical properties of the sheets at room temperature and cryogenic (173 K) temperature. The maximum difference between the cryogenic ultimate tensile strength and room-temperature ultimate tensile strength was 50 MPa for the sheets subjected to a rolling reduction ratio of 50% and aging at 393 K for 10 h. As the rolling reduction ratio increased, the lattice friction stress, dislocation strengthening, and precipitation strengthening of the material gradually approached a limiting value, thus reducing the difference between the strengths of the samples tensile tested at room temperature and cryogenic temperature.

Publication Date


  • 2021

Citation


  • Liu, Y., Zhao, X., Li, J., Bhatta, L., Luo, K., Kong, C., & Yu, H. (2021). Mechanical properties of rolled and aged AA6061 sheets at room-temperature and cryogenic environments. Journal of Alloys and Compounds, 860. doi:10.1016/j.jallcom.2020.158449

Scopus Eid


  • 2-s2.0-85098703389

Volume


  • 860

Issue


Place Of Publication


Abstract


  • We prepared AA6061 sheets by room-temperature rolling and low-temperature aging. We tested the tensile mechanical properties of the sheets at room temperature and cryogenic (173 K) temperature. The maximum difference between the cryogenic ultimate tensile strength and room-temperature ultimate tensile strength was 50 MPa for the sheets subjected to a rolling reduction ratio of 50% and aging at 393 K for 10 h. As the rolling reduction ratio increased, the lattice friction stress, dislocation strengthening, and precipitation strengthening of the material gradually approached a limiting value, thus reducing the difference between the strengths of the samples tensile tested at room temperature and cryogenic temperature.

Publication Date


  • 2021

Citation


  • Liu, Y., Zhao, X., Li, J., Bhatta, L., Luo, K., Kong, C., & Yu, H. (2021). Mechanical properties of rolled and aged AA6061 sheets at room-temperature and cryogenic environments. Journal of Alloys and Compounds, 860. doi:10.1016/j.jallcom.2020.158449

Scopus Eid


  • 2-s2.0-85098703389

Volume


  • 860

Issue


Place Of Publication