Method for producing titanium alloy plate, titanium alloy plate manufacturing method, copper foil manufacturing drum and copper foil manufacturing drum

摘要

This titanium alloy plate is composed of a group consisting of Sn: 0% or more and 2.0% or less, Zr: 0% or more and 5.0% or less, and Al: 0% or more and 7.0% or less in mass%. 1 type or 2 types or more: 0.2% or more and 7.0% or less in total, N: 0.100% or less, C: 0.080% or less, H: 0.015% or less, O: 0.700 % Or less and Fe: 0.500% or less, the balance has a chemical composition containing Ti and impurities, the average crystal grain size is 40 μm or less, and the log of the crystal grain size (μm) The standard deviation of the particle size distribution based on this is 0.80 or less, the crystal structure includes an α phase having a hexagonal close-packed structure, and the angle formed by the α phase in the [0001] direction with respect to the plate thickness direction is 0 ° or more and 40. The area ratio of crystal grains below ° is 70% or more.