| 摘要 |
PROBLEM TO BE SOLVED: To provide an intermetallic compd. enough in low temp. strength and toughness and suitable for the equipment members of aircraft, rockets, etc., used in space environment, the parts materials of engines, turbines or the like, the core materials of nuclear reactor systems, the core structural materials of fusion reactors or structural materials for nuclear reactor containers, conduits for neutrons, neutron-shielding containers or the like. SOLUTION: This intermetallic compd. having low temp. strength and toughness is the one essentially consisting of Ti-Al-M (M=V, Cr, Mo, Nb and/or W) and in which the main phases are composed of three phases of the B2 (β) phase,γphase andα2 phase. It is produced by combining various producing methods such as vacuum arc melting, electron beam melting, powder metallurgy or the like with isothermal forging at 800 to 1,000 deg.C or extrusion treatment.
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