Structure formation in a titanium-nickel alloy of eutectic composition

The mechanism of structure formation in a Ti--Ni alloy (50-54% Ti) of eutectic composition during sintering consists in the dissolution of Ni particles in a Ti matrix, which leads to the formation of the intermetallic compound TiNi and generation of pores, in TiNi - > Ti sub 2 Ni transition, and...

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Bibliographic Details
Published in:Soviet Powder Metallurgy and Metal Ceramics 1984-01, Vol.23 (1), p.63-67
Main Authors: Chepeleva, V. P., Delevi, V. G., Kizikov, . D., Trunevich, L. V., Cherepenina, E. S.
Format: Article
Language:English
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Summary:The mechanism of structure formation in a Ti--Ni alloy (50-54% Ti) of eutectic composition during sintering consists in the dissolution of Ni particles in a Ti matrix, which leads to the formation of the intermetallic compound TiNi and generation of pores, in TiNi - > Ti sub 2 Ni transition, and in the appearance, at beta -Ti/Ti sub 2 Ni contacts, of a liquid, which crystallizes in the form of a eutectic at a temp. < 1228K and undergoes eutectoid decomposition at a temp. < 1043K. Produced by sintering in the presence of a solid and a liquid phase, the alloy is characterized by high density, strength, and hardness. Its angle of contact on diamond during heating to 1523K is approx 72 deg . To be able to use such an alloy in diamond-containing composites, it will be necessary to lower its sintering temp. and increase its adhesion to diamond. 7 ref.--AA
ISSN:0038-5735
1573-9066
DOI:10.1007/BF00792492