SEARCH FOR GAMMA-PRECIPITATE HARDENABLE QUATERNARY L1(2)-ORDERED GAMMA'-INTERMETALLICS WITH COMPOSITIONS AROUND NI-3(AL,SI,TI), (NI,CO)(3)(AL,TI) AND (NI,CO)(3)(SI,TI)

Authors
LIU W ROSNER H NEMBACH E
Citation
W. Liu et al., SEARCH FOR GAMMA-PRECIPITATE HARDENABLE QUATERNARY L1(2)-ORDERED GAMMA'-INTERMETALLICS WITH COMPOSITIONS AROUND NI-3(AL,SI,TI), (NI,CO)(3)(AL,TI) AND (NI,CO)(3)(SI,TI), Zeitschrift fur Metallkunde, 88(8), 1997, pp. 648-651
Citations number
4
Categorie Soggetti
Metallurgy & Metallurigical Engineering
Journal title
Zeitschrift fur Metallkunde → ACNP
ISSN journal
00443093
Volume
88
Issue
8
Year of publication
1997
Pages
648 - 651
Database
ISI
SICI code
0044-3093(1997)88:8<648:SFGHQL>2.0.ZU;2-R
Abstract
The constitution of a total of 42 binary, ternary and quaternary alloy s with compositions around those of the intermetallic compounds Ni-3(A l,Si,Ti), (Ni,Co)(3)(Al,Ti) and (Ni,Co)(3)(Si,Ti) has been studied in the temperature range 973 to 1393 K. The object of this investigation was to find alloy systems in which fine, spherical, homogeneously dist ributed, disordered f.c.c. particles can be precipitated in an Ll(2)-l ong-range ordered matrix. Such alloys are suitable model systems for i nvestigating precipitation hardening and precipitation toughening of L l(2)-ordered intermetallic compounds. Two well suited alloys are: Ni69 CO9Al18Ti4 and Ni58CO20Si10Ti12.