Ni self-diffusion in refractory Al-Ni melts

被引:51
|
作者
Stueber, S. [1 ]
Holland-Moritz, D. [2 ]
Unruh, T. [3 ]
Meyer, A. [2 ]
机构
[1] Tech Univ Munich, Dept Phys E13, D-85747 Garching, Germany
[2] Deutsch Zentrum Luft & Raumfahrt DLR, Inst Mat Phys Weltraum, D-51170 Cologne, Germany
[3] Tech Univ Munich, Forschungsneutronenquelle Heinz Maier Leibnitz FR, D-85747 Garching, Germany
关键词
CRYSTAL-GROWTH; SOLIDIFICATION; DENSITY; SIMULATION; NICKEL; VOLUME; CU;
D O I
10.1103/PhysRevB.81.024204
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
This work presents investigations on the Ni self-diffusion coefficient in Al-Ni melts forming the technological relevant intermetallic phases Al50Ni50 and Al25Ni75 by quasielastic neutron scattering. We found that the Ni self-diffusivity at constant temperature is nearly independent of the composition within the composition range between 0 and 50 at. % Al. This may be a result of the small composition dependence of the atomic volume observed in the same range of composition.
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页数:5
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