X-RAY ELASTIC-CONSTANTS AS AFFECTED BY DI FFRACTING PLANE IN COLD-ROLLED 5083 ALUMINUM-ALLOY

The X-ray elastic constants of the cold-rolled 5083 aluminum alloy wer e measured for the crystal planes (311) and (222) by using CrKalpha ch aracteristic X-rays. The diffracting plane dependence of X-ray elastic constants as well as the variations of X-ray elastic constants due to the cold rolling, were studied experimentally. The following conclusi ons were obtained: (1) Reasonable measurement of X-ray elastic constan t was closely related to the variations of integrated intensity which was affected by the formation of rolling textures. (2) Certain inconsi stency was observed between the elastic constants values measured by m echanical procedures and those measured applying X-ray diffraction met hod. (3) The diffracting plane dependence of X-ray elastic constants w as observed for the (31 1) and (222) planes. X-ray elastic constants o f the (3 11) plane decreased with increasing reduction in area by cold rolling.