A method of manufacturing the same excellent handling properties of cold and cold ductility and α + β type titanium alloy plate

摘要

A α + β type titanium alloy hot-rolled plate, it is assumed that (hot rolling width) direction direction (normal to the hot-rolled plate) (a) ND, RD (hot rolling) direction, TD, C-axis orientation (α-phase The a Φ angle to the plane including the ND direction and the c-axis direction θ, makes with the plane containing the TD direction and the ND direction angle normal direction) of the (0001) plane makes with the ND direction, (b1) θ 0 degrees or more and 30 degrees or less, and of X-rays by the crystal grains Φ enters (180 ° -180 °) in the entire periphery (0002) reflecting the relative intensity, and XND the strongest intensity, (b2) θ is 80 degrees or more, and is less than 100 degrees, (of X-rays by crystal grains Φ enters the ± 10 degrees of the (0002) reflection relative intensity, the strongest intensity) as XTD, (c) XTD / XND There is 5.0 or more, cracking to the plate width direction is unlikely to progress to the cold-rolling, and easy cold-rolled, hot-rolled titanium alloy plate with excellent handling properties of cold and cold ductility.