Coarsening dynamics in elastically anisotropic alloys

被引：4
|
作者：
Pfau, B.
Stadler, L. -M.
Sepiol, B.
Weinkamer, R.
Kantelhardt, J. W.
Zontone, F.
Vogl, G.
机构：
[1] Univ Vienna, Fak Phys, A-1090 Vienna, Austria
[2] Max Planck Inst Colloids & Interfaces, D-14424 Potsdam, Germany
[3] Univ Halle Wittenberg, Fachbereich Phys, D-06099 Halle, Germany
[4] European Synchrotron Radiat Facil, F-38043 Grenoble, France
来源：
PHYSICAL REVIEW B | 2006年 / 73卷 / 18期
关键词：
D O I：
10.1103/PhysRevB.73.180101
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study in situ the coarsening dynamics in elastically anisotropic phase-separating alloys, taking advantage of coherent x rays. Temporally fluctuating speckle intensities are analyzed for two different Ni-Al-Mo samples with different lattice misfits between precipitates and matrix. The detected long-term correlations depend not only on the norm but strongly on the direction of the scattering vector-an unambiguous proof of direction-dependent coarsening dynamics. For strong lattice misfits, our results indicate coalescence of precipitates in the {100} planes.
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页数：4
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