Oxide-dispersion-strengthened niobum-based alloys and process fo

Details Oxide-dispersion-strengthened niobum-based alloys and process fo Oxide-dispersion-strengthened niobum-based alloys and process fo

1992-01-27

1993-01-19

Dean, R.

Metal treatment

Stock

Vanadium, niobum, or tantalum base

75351, 75622, 148442, 419 66, 419 67, 419 68, 419 69, 420426, 420580, 420588, C22C 2702

Patent

active

051804468

ABSTRACT:
Improvement of Nb-alloys, which are known as heat-resistant alloys, by giving anti-oxidation property thereto and increasing the high temperature strength thereof. In addition to a determined amount of Al, one of (1) suitable amounts of Ti, Cr and V, and (2) suitable amounts of Cr and Co, are added to Nb-matrix, and a high melting temperature metal oxide such as Y.sub.2 O.sub.3 or Al.sub.2 O.sub.3 is dispersed in the matrix. Preferable method of preparing the alloys is combination of mechanical alloying and subsequent hot processing.

REFERENCES:
patent: 3028236 (1962-04-01), Wlodek et al.

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