Titanium composites and titanium materials for hot working

摘要

A titanium composite material (1) comprising a first surface layer portion (2), an inner layer portion (4) and a second surface layer portion (3), wherein the first surface layer portion (2) and the second surface layer portion Wherein the thickness of at least one of the first surface layer portion 2 and the second surface layer portion 3 is 2 탆 or more and the thickness of the titanium composite material 1 Wherein the ratio of the total thickness to the total thickness is 40% or less, and the volume ratio at a cross section perpendicular to the plate thickness direction of the void is more than 0% and 30% or less.