Controlling the texture of tantalum plate

By carefully monitoring the manufacturing system, it is possible to produce tantalum plate with a strong (111) texture. The sheet bar prior to rolling must be fully recrystallized and must be rolled both perpendicular and parallel to the ingot center line. Greater reductions in one direction than the other reinforce the desired texture. The final anneal temperature should be sufficiently high to produce a fully recrystallized structure, but low enough to prevent excessive grain growth.