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Early Stages of Decomposition in Ni-Rich Ni-Ti

  • M. Kompatscher (a1), B. Demé (a2), J. Hecht (a1), H. Heinrich (a1), J. Kohlbrecher (a3), J.-M. Schneider (a1), B. Schönfeld (a1) and G. Kostorz (a1)...
Abstract

In-situ small-angle neutron scattering was performed on Ni-(10 to 12) at.% Ti polycrystals and single crystals at temperatures between 870 and 1270 K. During decomposition metastable precipitates of cuboidal shape form with preferred alignement along <100>. The Ti concentration of these precipitates is 17(1) at.% (between 870 and 950 K). Metastable precipitates precede the formation of platelets of the stable η phase even outside the hitherto accepted metastable miscibility gap.

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MRS Online Proceedings Library (OPL)
  • ISSN: -
  • EISSN: 1946-4274
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