The structure of boundaries between antiphase regions in TiAl-based alloys

T. T. Cheng; X. D. Zhang; Y. G. Li; M. J. Kaufman; I. P. Jones; M. H. Loretto

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The structure of boundaries between antiphase regions in TiAl-based alloys

机译：TiAl基合金中反相区之间的边界结构

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High-resolution transmission electron microscopy has been used to examine the detaild structure of antiphase boundaries in the tetragonal r-phase in TiAl-based alloys. In agreement with earlier work using diffraction contrast images and microdiffraction it has been shown that, associated with each antiphase domain boundary separating domains where the c axes are parallel, there is a thin (2 nm) layer in which the c axis is at right angles to the c axis of the domains either side. The reasons why such a complex defect is found in TiAl alloys but is not found in other L10 phases which have been examined, are brefly discussed.

机译：高分辨率透射电子显微镜已用于检查TiAl基合金中四方r相中反相边界的详细结构。与早期使用衍射对比图像和微衍射的工作相一致，已表明，与c轴平行的每个反相畴边界分隔畴相关，存在一个薄的（2 nm）层，其中c轴成直角到域c轴的任一侧。人们讨论了为什么在TiAl合金中发现这种复杂缺陷而在其他L10相中未发现这种复杂缺陷的原因。

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《Philosophical Magazine Letters》 |1996年第2期|共6页
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T. T. Cheng; X. D. Zhang; Y. G. Li; M. J. Kaufman; I. P. Jones; M. H. Loretto;
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1. The structure of boundaries between antiphase regions in TiAl-based alloys [J] . T. T. Cheng, X. D. Zhang, Y. G. Li, Philosophical Magazine Letters . 1996,第2期

机译：TiAl基合金中反相区之间的边界结构
2. On substructure in titanium alloy martensites: Comment on 'antiphase boundary-like stacking fault in α″-martensite of disordered crystal structure in β-titanium shape memory alloy' [J] . Banerjee D. Philosophical magazine: structure and properties of condensed matter . 2011,第16a18期

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3. Effect of the Magnitude of Long-Range Atomic Order and the Size of Antiphase Domains on the Grain Structure and Special Grain Boundary Parameters in L1_2-Superstructure Alloys [J] . E. V. Konovalova, S. Kittell Bulletin of the Russian Academy of Sciences. Physics . 2014,第8期

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4. TRANSMISSION ELECTRON MICROSCOPY OF ANTIPHASE BOUNDARY-LIKE STRUCTURE INDUCED BY DISPLACIVE TRANSFORMATION IN Ti-Pd SHAPE MEMORY ALLOY [C] . M. Matsuda, M. Yamashita, K. Hirayama, International Conference on Martensitic Transformations . 2009

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5. Structure of and dynamical processes in the Earth's magnetopause and boundary layer regions [D] . Phan, Tai-Duc 1991

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6. An Ab Initio Study of Magnetism in Disordered Fe-Al Alloys with Thermal Antiphase Boundaries [O] . Martin Friák, Miroslav Golian, David Holec, 2020

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7. The antiphase boundary in half-metallic Heusler alloy Co2Fe(Al,Si) : atomic structure, spin polarization reversal, and domain wall effects [O] . Nedelkoski Zlatko, Sanchez Ana M., Ghasemi Arsham, 2016

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The structure of boundaries between antiphase regions in TiAl-based alloys

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