Phase equilibria have been investigated in the Ni-rich portion of the Ni-Cr-Ta system for temperatures of 1523 and 1273 K, using electron microprobe and x-ray diffraction analysis. The four phases represented in the partial isothermal sections determined are γ(Ni-rich solid solution), Ni3Ta, Ni2Ta, and NiCrTa. The sections contained two three-phase regions involving γ + Ni3Ta + NiCrTa and Ni3Ta + Ni2Ta + NiCrTa. The compound Ni8Ta and its associated phase regions were not studied.
HANSENM. and ANDERKOK.: ‘Constitution of binary alloys’,2nd edn.; 1958, New York, McGraw-Hill.
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PUGLIESEL. A. and FITTERERG. R.: Metall. trans., 1970, 1, 1997.
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YUKAWAN., HIDAM., IMURAT., KAWAMURAM., and MIZUNOY.: ibid., 1972, 3, 887.
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PIMENOVV. M., YUGASTEY. E., and AKKUSHKEROVAK. A.: Russ. Met., 1977, 1, 155.
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KUBASCHEWSKIO. and SPEIDELH.: J. Inst. Met., 1948, 75, 417.
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FLEMINGR. P. H.: Planseeber. Pulvermetall., 1977, 25, 214.
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KOTVALP. S.: 2nd Int. Conf. ‘Strength of metals and alloys’, Asilomar, California American Society for Metals, 1970, p. 68
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ROYERA. and GANTOISM.: Wm. Sci. Rev. Metall., 1971, 68, 1.
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ABALLEM., RAMASWAMYV., and WESTD. R. F.: J. Less-Common Met., 1975, 39, 287.
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COUNSELLJ. F. and SPENCERp. J.: unpublished work.
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GONZALESG.: unpublished work.
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COLBYJ. W.: Bell Telephone Lab. Inc., Allentown, Pennsylvania, USA, private communication, 1967; ‘Advances in X-ray analysis’, vol. 11, pp. 287–303; 1968, New York, Plenum Press.
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GIESSENB. C. and GRANTN. J.: Acta Metall., 1967, 15, 871.
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GIESSENB. C. and GRANTN. J.: Acta Crystallogr., 1965,18, 1080.
