Patent ID: 9095885
Filing Date: 2015-08-04
Classification: B21B,B22F,C22F,C23C,H01J,Y10T

Abstract:
1. A refractory metal plate having a center, a thickness, en edge, a top surface and a bottom surface, the refractory metal plate having a crystallographic texture as characterized by through thickness gradient; banding severity; and variation across the plate, for the texture components 100//ND and 111//ND using electron back-scatter diffraction with a 15 μm step in both the horizontal and vertical directions for each measurement, wherein the maximum through-thickness gradient is less than or equal to 13% per mm, the maximum banding severity is less than or equal to 8%, and the maximum variation across the plate is lass than or equal to 11%; wherein the metal plate is at least 99.95% pure refractory metal; and wherein the metal plate has a grain size that is less than 60 μm.