It has been shown that matlab programming application of hydrostatic gas pressures during superplastic deformation of excellent grained 7475 Al can evade matlab programming intergranular cavitation all the time encountered at atmospheric pressure. A essential ratio of hydrostatic force to flow stress may be defined for each superplastic forming condition above which just about no cavitation occurs. In deformation conditions where intergranular cavitation plays matlab colossal part in final tensile rupture, superplastic ductility may be enhanced by matlab programming application of hydrostatic pressures. Similarly, detrimental outcomes of huge superplastic lines on service homes may be decreased or eliminated by matlab programming application of appropriate hydrostatic pressures during superplastic forming. In this situation, superplastically formed material could have matlab programming same design allowables as time-honored 7475 Al sheetEffect of hydrostatic compression on equilibrium helium bubbles in low aluminium lithium alloy irradiated in reactor at 570 K is investigated. Measurements of hydrostatic density and electron microscopic investigations have shown, that application of up to 2 GPa force reduces equilibrium size of helium bubbles and decreases helium swelling.