Patent Number: 6,165,414

Title: Titanium aluminide for precision casting and method of casting using titanium aluminide

Abstract: A titanium aluminide having the following chemical composition: Al: 33.5-34.5 wt %, Fe: 1.5-2.0 wt %, V: 1.5-2.0 wt %, and B: 0.05-0.10 wt %, with the remainder being Ti and inevitable impurities. Greatly decreased is a ratio of .alpha..sub.2 phase (Ti.sub.3 Al) precipitatable in a TiAl matrix. Accordingly, it is possible to deposit a trace amount (2-5%) of thin line-like .alpha..sub.2 phase in the TiAl matrix. This titanium aluminide is particularly suitable for precision casting.

Inventors: Nishikiori; Sadao (Hoya, JP), Takahashi; Satoshi (Yokohama, JP)

Assignee: Ishikawajima-Harima Heavy Industries Co., Ltd.

International Classification: C22C 14/00 (20060101); C22F 1/18 (20060101); C22C 014/00 (); C22F 001/18 ()

Expiration Date: 12/26/2017