X-ray Elastic Constant and Stress Measurement in Metals Having a Texture : 2nd Report, Plastic Deformation and Residual Stress

概要

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X-ray elastic constant of metals having a texture in the state of plastic deformation is calculated from the distributions of axis densities measured by a simple procedure. The results are examined experimentally by X-ray stress measurement of a rolled steel sheet being in the state of plastic deformation and in the unloaded condition after it. The X-ray stress evaluated taking account of a texture is in good correspondence with the mechanical stress, and it seems that the stress in the surface layer is different from that in the interior of the specimen in the state of plastic deformation. In the case of unloaded condition, the residual stresses in the surface layer and in the bulk can be obtained respectively from the measured values of residual lattice strain by using X-ray elastic constants in the cases of elastic and plastic deformations.
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