Materials Transactions Online

Materials Transactions, JIM, Vol.33 No.4 (1992) pp.419-421
© 1992 The Japan Institute of Metals

Ductility of High Purity TiAl Intermetallic Compound

Yoshinori Murata, Masahiko Morinaga and Yoshikazu Takeda

Department of Production Systems Engineering, Toyohashi University of Technology,
Hibarigaoka, Tempaku-cho, Toyohashi 441, Japan

A high purity Ti-50 mol%Al intermetallic compound was found to be ductile having the fracture strain of more than 3%. The purification induced a large change in the microstructure. A single TiAl phase with smooth grain boundaries was observed. This is in contrast with the lamellar structure consisting of Ti3Al and TiAl with zigzag grain boundaries in the ordinary purity TiAl with the same composition.

(Received January 10, 1992)

Keywords: TiAl, intermetallic compound, purity, ductility, microstructure

Graduate Student, Toyohashi University of Technology.

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© 1992 The Japan Institute of Metals