MULTILAYER COMPOSITE MATERIAL AND PROCESS OF ITS MANUFACTURE Russian patent published in 1995 - IPC

FIELD: composite materials. SUBSTANCE: multilayer composite material includes layers based on titanium alloy between which layers of intermetallic compound based on titanium and aluminium are arranged. Ratio of thicknesses of layers of titanium alloy to layers of intermetallic compound amounts to 1:0.75 - 1:0.5. Material is produced by hot pressing of layers put on technological mandrel. Layer of aluminium is laid on titanium alloy beforehand. In process of hot pressing layer of intermetallic compound containing 25-75 per cent by mass of aluminium is formed between layers of titanium alloy. Stoichiometric composition and thickness of intermetallic layer formed by interaction of titanium and aluminium alloys are controlled by pressing temperature of 1000-1350 C and curing under heated condition in the course of 1-3 h. EFFECT: enhanced operational characteristics of composite material. 2 cl, 3 tbl