Patent ID: 7923127
Filing Date: 2011-04-12
Classification: C22C,C22F,Y10T

Abstract:
1. A preform, comprising: an as-cast γ-TiAl alloy material disposed in a canning material, wherein said as-cast γ-TiAl alloy material has a shape suitable for being rolled into a sheet and has a composition consisting of from 44-47 at % aluminum, from 2.0 to 6.0 at % niobium, from 1.0 to 3.0 at % chromium, from 1.0 to 3.0 at % manganese, from 0.5 to 1.0 at % tungsten, from 0.2 to 0.5 at % boron, from 0.1 to 0.4 at % silicon, about 0.2 at % carbon, and the balance titanium, wherein said canning material is selected from the group consisting of titanium and titanium alloys.