Alloys based on NiAl for High Temperature Applications
نویسندگان
چکیده
منابع مشابه
Point Defects in Nial Alloys under Pressure
We investigate the eeect of elevated pressures on the point defect ther-modynamics in NiAl alloys. A particular motivation for this study is due to the expected elimination of structural vacancies on the Al-rich side at high pressure. We employ the density functional theory to compute point defect energies as a function of pressure, which are in turn used as input to the Wagner-Schottky model. ...
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The internal friction of high-purity NiAl single crystals was investigated utilizing a low-frequency subresonance torsion a p m . Above lOOOK the damping increases strongly up to Q-' =0.3 at 1400K. The activation enthalpy of this viscoelastic relaxation depends on the composition and shows the highest value (2.8eV) for stoichiometric NiAl. The results are discussed in terms of diffusionantrolle...
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ژورنال
عنوان ژورنال: MRS Proceedings
سال: 1984
ISSN: 0272-9172,1946-4274
DOI: 10.1557/proc-39-411