Phase and Texture Analysis of the alpha-Phase Extruded Uranium-2.4 Weight Percent Niobium Alloy

摘要

The x-ray diffraction analysis of the alpha-phase extruded uranium-2.4 wt % niobium alloy indicates that the phase composition and texture are dependent on extrusion parameters. Higher extrusion ratios, rates, and/or die angles reduced the concentration of niobium in the gamma phase of the two-phase ( alpha + anti gamma /sub 1/) structure. In addition, the intensity of the near-(100) extrusion texture increased with increasing area reduction ratio (4:1 to 15:1). Postextrusion heat treatments in the alpha phase tended to stabilize, as well as homogenize, the extruded structure while retaining the extrusion texture. The details of this study are presented.