Abstract
The circumferential distributions of axial, hoop, and radial residual strains in a bent INCOLOY-800* tube have been measured by neutron diffraction. High residual axial tensile strains are observed just above the neutral axis with corresponding compressive strains just below the neutral axis. There are marked and systematic differences in the amount of strain in grains with a [001] direction aligned along the axis of the tube and those with a [111] direction aligned along the tube axis. Model calculations show that these differences originate in the different yield points and elastic moduli for different crystallographic directions.
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Holden, T.M., Dolling, G., Powell, B.M. et al. Characterization of residual stresses in bent incoloy-800 tubing by neutron diffraction. Metall Trans A 19, 2207–2214 (1988). https://doi.org/10.1007/BF02645044
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DOI: https://doi.org/10.1007/BF02645044