Publications in Scientific Journals:
G. Zickler, R. Schnitzer, R. Radis, R. Hochfellner, R. Schweins, M. Stockinger, H. Leitner:
"Microstructure and Mechanical Properties of the Superalloy ATI Allvac 718Plus";
Materials Science and Engineering A,
523
(2009),
1-2;
295
- 303.
English abstract:
ATI Allvac 718Plus is a novel nickel-based superalloy, which was designed for heavyduty applications in aerospace turbines. In the present study, the high resolution investigation techniques, atom probe tomography, electron microscopy and in-situ high-temperature smallangleneutron scattering were used for a comprehensive microstructural characterization. The alloy contains nanometer-sized spherical gamma' phase precipitates (Ni3(Al,Ti)) and plate-shaped delta phase precipitates (Ni3Nb) of micrometer size. The precipitation kinetics of the γ' phase can be described by a classical model for coarsening. The precipitation strongly influences the mechanical properties and is of great scientific and technological interest.
Keywords:
nickel-based superalloy; precipitation kinetics; atom probe tomography; smallangle neutron scattering; strengthening mechanism
"Official" electronic version of the publication (accessed through its Digital Object Identifier - DOI)
http://dx.doi.org/10.1016/j.msea.2009.06.014
Created from the Publication Database of the Vienna University of Technology.