Титановый танк

Wyvern-2> Есть инфа, пока не подтвержденная (счас ищу), что в США промсварку титана вообще не освоили до сих пор Сварные титановые детали до сих пор уникальные изделия, с очень большим % брака. О титановых АПЛ там даже не задумываюся (хотя в свое время оочень и очень хотели)

For example, about twenty years ago, the US Navy became interested in welded pressure hulls for submarines in response to the Soviet Alpha Class titanium ull submarines. This interest lasted about five years and during this period there was some excellent welding research done on heavy sections of medium strength (700-750 MPa yield strength), high toughness alloys. This effort ceased in the early 1980's when it became clear that a titanium hull submarine was not affordable. Today, the majority of heavy section welding is performed on CP titanium during the fabrication of vessels for the chemical and petrochemical industry.
An example of one such vessel is shown in Fig. 3.49.
{Fig. 3.49. Example of a large pressure vessel being fabricated from CP titanium by manual fusion welding, welder shown by arrow (courtesy J. A. Hall)}
{Fig. 3.57. Photo of the two work pieces before inertia welding to create a multistage compressor rotor for an aircraft engine (courtesy MTU)}
{Fig. 3.58. Photo of inertia welded part (at right) made from the two pieces shown in Fig. 3.57, cross section of part (at left) showing the seven disk stages (courtesy MTU)}
{Fig. 3.59. Close-up photo of the airfoil joint area of an integrally bladed aircraft engine rotor being made by linear friction welding (courtesy MTU)}