Higher order Laue zone patterns in convergent beam electron diffraction and determinations of local lattice parameters in .ALPHA.- and .ALPHA.2-phases of a Cu-20at%Al alloy.
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概要
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In order to clarify the applicability of higher order Laue zone (HOLZ) patterns in convergent beam electron diffraction to the determinations of local lattice distortions in two-phase alloys, we discussed experimental conditions affecting the accuracy, and observed HOLZ patterns of a Cu-20at%Al alloy, in which small particles of α2-phase with one dimensional long period superstructure are precipitated in the matrix of fcc α-phase. It was shown that the accuracy is affected by specimen thickness as well as beam direction, and that lattice parameters along the [100] and [010] axes can be determined from a [114] HOLZ patterm with an error less than one part in a thousand. The [114] HOLZ patterns were obtained both from small regions in α-matrix and α2-particles. Slight changes in lattice parameters were detected as a function of position with a high spatial resolution.
- The Iron and Steel Institute of Japanの論文
著者
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Oki Kensuke
Department Of Advanced Science For Electronics And Materials Kyushu University
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Kuwano Noriyuki
Department Of Applied Science For Electronics And Materials Interdisciplinary Graduate School Of Eng
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Matsumura Syo
Department Of Applied Quantum Physics And Nuclear Engineering Faculty Of Engineering Kyushu Universi
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OKI Kensuke
Department of Materials Science and Technology, Graduate School of Engineering Sciences, Kyushu University
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Tomokiyo Yoshitsugu
Research Laboratory of High Voltage Electron Microscope, Kyushu University
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Okuyama Tetsuya
Department of Materials Science and Technology, Graduate School of Engineering Sciences, Kyushu University
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