Following the reduction in residual strain and residual stress during plastic deformation of the aluminium alloy 7449
Rectilinear blocks of the very high strength aerospace aluminium alloy 7449 will be solution treated and cold water quenched. They will then be stress relieved immediately by cold compression. The amount of cold compression will be systematically varied from 0% to 0.5%. The amount of plastic strain being limited to well below the industrial norm of ~2%. The blocks will then receive a stabilising aging treatment. The residual stress distribution remaining in the blocks will then be characterised using neutron diffraction. This experiment will aim to track how the through thickness three dimensional residual strains and stresses change as cold compression progresses.
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TRUMAN Christopher; PIRLING Thilo and ROBINSON Jeremy. (2016). Following the reduction in residual strain and residual stress during plastic deformation of the aluminium alloy 7449. Institut Laue-Langevin (ILL) doi:10.5291/ILL-DATA.1-02-195
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