AN ANALYTICAL ELECTRON-DIFFRACTION TECHNIQUE FOR THE DETERMINATION OF LONG-RANGE ORDER PARAMETERS IN MULTICOMPONENT ORDERED ALLOYS

被引：25

作者：

MATSUMURA, S

MORIMURA, T

OKI, K

机构：

[1] Kyushu Univ, Kasugashi

来源：

MATERIALS TRANSACTIONS JIM | 1991年 / 32卷 / 10期

关键词：

ORDER-DISORDER TRANSITION; LONG-RANGE ORDER; MULTICOMPONENT ALLOY; ELECTRON DIFFRACTION; ALCHEMY; INTERSECTING KIKUCHI-LINE METHOD; ANALYTICAL ELECTRON MICROSCOPY; CUAUPD ALLOY; L10 ORDERED PHASE; ATOMIC PAIRWISE INTERACTION PARAMETER;

D O I：

10.2320/matertrans1989.32.905

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A combination of the channeling enhanced X-ray microanalysis (ALCHEMI) and the intersecting Kikuchi-line (IKL) method in transmission electron microscopy is used as a technique to determine long-range order (LRO) parameters of multi-component alloys. This technique, IKL-ALCHEMI, opens up a field of research on atomic configuration in multinary alloys with imperfect order, taking advantage of a transmission electron microscope equipped with an EDX spectrometer. An application of IKL-ALCHEMI to L10-type ordering in CuAuPd ternary alloys has successfully quantified occupation probabilities of the three elements on the two sublattices as a function of alloy composition. The result clearly shows the effective ordering interactions between first nearest neighboring pairs V(ij) to be V(CuPd) > V(CuAu) >> V(AuPd).

引用

页码：905 / 910

页数：6

共 31 条

[11] ABSORPTION PARAMETERS IN ELECTRON DIFFRACTION THEORY [J].