Titanium-based alloy

Details Titanium-based alloy Titanium-based alloy

1998-04-15

1999-08-17

Mai, Ngoclan

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75238, 75242, 75244, C22C 2900

Patent

active

059396512

ABSTRACT:
A titanium carbonitride-based alloy which is excellent in chipping resistance and wear resistance is disclosed. A hard phase is a carbide (TiMC), a nitride (TiMN) or a carbonitride (TiMCN) of Ti and at least one metal (M), other than Ti, selected from those belonging to the groups IVa, Va and VIa of the periodic table. A binder phase contains Co and Ni as main components. When the structure of the titanium-based alloy is observed with a scanning electron microscope, particles forming the hard phase in the alloy have black core parts which are located on core portions to appear black and peripheral parts which are located around the black core parts to appear gray. Assuming that A and B represent particles having the black core parts occupying areas of at least 30% of the overall particles A and those having the black core parts occupying areas of not more than 30% of the overall particles B respectively, the area ratio of the particles A to the particles B satisfies a condition of 0.3.ltoreq.A/(A+B).ltoreq.0.8.

REFERENCES:
patent: 5395421 (1995-03-01), Weinl et al.
patent: 5421851 (1995-06-01), Oskarsson et al.
patent: 5766742 (1998-06-01), Nakamura et al.

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