X-RAY ELASTIC CONSTANT AND STRESS MEASUREMENT IN METALS HAVING A TEXTURE - (1ST REPORT, ELASTIC DEFORMATION UNDER UNIAXIAL STRESS).

X-ray elastic constant of metals having a texture is calculated numerically from the distributions of axis densities. On the basis of these results, the practical application of X-ray stress measurement to these metals is discussed. The calculation is made for a hot rolled steel sheet being in the state of uniaxial elastic deformation, and the results are compared with the experimental ones. As a result, the influence of texture on X-ray elastic constant was clarified and the experimental values of X-ray elastic constant were sufficiently evaluated from the present calculation. When the stress in metals having a texture is calculated by using an X-ray elastic constant determined from the axis distributions for them, X-ray stress measurement has satisfactory accuracy, but the elastic constant obtained without considering the texture introduces some error into the stress measurement.