TiAl-based intermetallic compound with excellent high temperatur

Details TiAl-based intermetallic compound with excellent high temperatur TiAl-based intermetallic compound with excellent high temperatur

1993-10-05

1995-07-11

Roy, Upendra

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

148421, 420421, C22C 1400

Patent

active

054317541

ABSTRACT:
A TiAl-based intermetallic compound has a metallographic structure which includes a region A having fine .beta.-phases dispersed in a .gamma.-phase. The volume fraction Vf of the .beta.-phases in the region A is set equal to or more than 0.1% (Vf.gtoreq.0.1%). Thus, the .beta.-phases can exhibit a pinning effect to prevent a transgranular pseudo cleavage fracture in the .gamma.-phase, thereby providing an enhanced high-temperature strength of the TiAl-based intermetallic compound.

REFERENCES:
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patent: 5076858 (1991-12-01), Huang
patent: 5190603 (1993-03-01), Nazmy et al.
patent: 5196162 (1993-03-01), Maki et al.
patent: 5226985 (1993-07-01), Kim et al.
patent: 5232661 (1993-08-01), Matsuo et al.
Hashimoto et al, (Eng. Translation) CAMP-ISIJ, vol. 3 (1990) p. 1652.
English Language Abstracts of JP 5-70869, 5-70870, 5-70873, 4-365828, 4-365829, 4-365830, 3-193850, 3-193851 & 3-193852.
Chemical Abstracts, Mar. 8, 1993--vol. 118, "Chemistry of Synthetic High Polymers".

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