Short‐range ordering in face‐centered‐cubic Ni3Al
نویسندگان
چکیده
منابع مشابه
Dislocation mechanisms of creep in Ni3Al
The compressive creep deforrn;~tiort microstructure of polycrystalline Ni3AI h:is been observed by transnlission electron microscopy (TEM). ( 1 1 I ) rind ( 110) slip systems have been identified in primary creep. Dissociatiort of edge superparti:~l pairs perpendicular to the slip plane (both { 11 1 ) and ( 110) ) is common in crept specimens. I'he formation of this superdislocation...
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This work investigates the charge transfer and A1 (Ga) p-Ni d hybridization effects in the intermetallic Ni3Al (Ni3Ga) alloy using the Ni L3~and K-edge and Al (Ga) K x-ray absorption near edge structure (XANES) measurements. We find that the intensity of white-line features at the Ni L3~-edge in the Ni3Al (Ni3Ga) alloy decreased in comparison with that of pure Ni, which can be attributed to the...
متن کاملFirst-principles Study of Interfacial Boundaries in Ni–ni3al (postprint)
The width and energy of low-index interfacial boundaries (IFBs) in Ni–Ni3Al are calculated using first-principles methods for temperatures ranging from 0 to 1300 K. The low-temperature, coherent and chemically sharp (100), (110) and (111) IFBs are studied using conventional spin-polarized density functional methods. Cluster expansion methods, as implemented in the ATAT software suite, are used ...
متن کاملFirst-principles study of interfacial boundaries in Ni–Ni3Al
The width and energy of low-index interfacial boundaries (IFBs) in Ni–Ni3Al are calculated using first-principles methods for temperatures ranging from 0 to 1300 K. The low-temperature, coherent and chemically sharp (100), (110) and (111) IFBs are studied using conventional spin-polarized density functional methods. Cluster expansion methods, as implemented in the ATAT software suite, are used ...
متن کاملINITIAL STUDIES OF B-DOPED AND ALLOYED Ni3Al
As part of an extended program to study the fine scale chemistry of the matrix and grain boundary area of doped and alloyed Ni3A1, experiments were initiated to determine the effects of various atom probe parameters on the accuracy of measured concentrations. Samples of arc-melted as well as rapidly cooled Ni3A1 containing boron, iron and hafnium were used. The distribution of solutes in the ma...
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ژورنال
عنوان ژورنال: Journal of Applied Physics
سال: 1995
ISSN: 0021-8979,1089-7550
DOI: 10.1063/1.359463