Tial-based intermetallic compound alloys and processes for prepa

Details Tial-based intermetallic compound alloys and processes for prepa Tial-based intermetallic compound alloys and processes for prepa

1994-08-12

1996-05-21

Kastler, Scott

Alloys or metallic compositions

Titanium base

Aluminum containing

420421, C22C 1400

Patent

active

055186904

ABSTRACT:
TiAl-besed intermetallic compound alloys contain chromium and consist essentially of a dual-phase microstructure of .gamma. and .beta. phases, with the .beta. phase precipitating at .gamma. grain boundaries. The .beta. phase precipitating at .gamma. grain boundaries is 2% to 25% by volume fraction. A process for preparing TiAl-based intermetallic compound alloys comprises the steps of preparing a molten TiAl-based intermetallic compound alloy of a desired composition, solidifying the molten alloy, homogenizing the solidified alloy by heat treatment, and thermomechanically working the homogenized alloy.

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