Ti-Al INTERMETALLIC COMPOUND SHEET AND ITS PRODUCING METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for producing a Ti-Al intermetallic compound sheet easily producible with ordinary rolling mill and to provide the intermetallic compound sheet. SOLUTION: The method consists of a rolling pressure welding process in which a laminated sheet is obtained by alternately laminating a Ti layer and an Al layer so that the main phase of an intermetallic compound becomes the two phase structure of Ti3Al and TiAl, the first solid phase diffusion heat treatment process in which, under continuously or intermittently applied pressure at the total draft of >=3%, the laminated sheet is heated and held to a temperature less than the melting point of Al, so that Ti in the Ti layer and Al in the Al layer are reacted to form Al3Ti, to obtain the first reaction laminated sheet in which the remaining Ti layer composed of unreacted Ti and the Al3Ti layer composed of Al3Ti are laminated and the second solid phase diffusion heat treatment process in which the first reaction laminated sheet is heated and held to form a two phase structure of Ti3Al and TiAl as the main phases.