Patent ID: 7976649
Filing Date: 2011-07-12
Classification: B21B,C22C,C22F

Abstract:
1. A method of fabricating a material comprising a superplastically formable strip or a superplastically formable foil from TiAl6V4 with a thickness of no more than 0.9 mm, the method comprising the steps: a) hot rolling a sheet metal made of TiAl6V4; b) thermal pre-treating the hot-rolled sheet metal at a temperature between 650 and 850° C.; and c) cold rolling the hot-rolled and thermally pre-treated sheet metal at a forming rate of at least 30%, wherein the forming rate per single pass amounts to between 1 and 15%, to form a material of the group consisting of a cold rolled strip and a cold rolled foil with a thickness of no more than 0.9 mm, wherein the respective material from the group consisting of the cold-rolled strip and the cold-rolled foil is not annealed in a finishing step.