Patent ID: 8231745
Filing Date: 2012-07-31
Classification: B21B,B21H,C22C,C22F,C23C,Y10T

Abstract:
1. A niobium metal plate that is circular in shape and having a rolling plane and a thickness of 0.080 to 1.5 inch, wherein said niobium metal plate is isotropic in said rolling plane and deforms isotropically in any direction within said rolling plane and said niobium metal plate has a crystallographic texture throughout said thickness wherein said crystallographic texture has a pole figure with an axial symmetrical texture with an axis normal to said rolling plane, wherein said axis has a primary axial <111> crystallographic texture, with <110> texture and <100> texture poles that are randomly distributed or have a symmetrical texture around said axis, or said axis has a primary axial <100> crystallographic texture, with <110> texture and <111> texture poles that are randomly distributed or have a symmetrical texture around said axis, and said niobium metal plate has a percent texture banding area of less than 0.5% with respect to overall area and volume of said niobium metal plate that is inconsistent or non-uniform with respect to the primary texture present in said niobium metal plate, and said niobium metal plate has a purity of at least 99.95% Nb and an average grain size of 150 microns or less.