On orientation relationship of the Ti_5Si_3 precipitates in a TiAl alloy

H. Zhang; L.L. He; H.Q. Ye

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On orientation relationship of the Ti_5Si_3 precipitates in a TiAl alloy

机译：TiAl合金中Ti_5Si_3析出物的取向关系

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摘要

The orientation relationship (OR) and interface structure between zeta-Ti_5Si_3 precipitates and gamma-TiAl phase in a Ti-Al based alloy composed of gamma-TiAl and alpha_2-Ti_3Al lamellae have been investigated using transmission electron microscopy. Various orientation relationships defined by a pair of parallel directions and planes are discussed with the method of basic vector transformation matrix in the reciprocal space from gamma-TiAl to zeta-Ti_5Si_3 precipitate phase and two new kinds of orientation relationships between zeta-Ti_5Si_3 and gamma-TiAl phases have been found. Periodical interface fringes at gamma-TiAl/zeta-Ti_5Si_3 interface are analyzed according to the Moire fringes and interface misfit dislocations.

机译：利用透射电子显微镜研究了由γ-TiAl和α_2-Ti_3Al薄片组成的Ti-Al基合金中ζ-Ti_5Si_3析出物与γ-TiAl相之间的取向关系（OR）和界面结构。利用基本矢量变换矩阵的方法，探讨了从γ-TiAl到zeta-Ti_5Si_3析出相的倒数空间中基本矢量变换矩阵的定义以及zeta-Ti_5Si_3和γ-之间的两种新型取向关系已发现TiAl相。根据莫尔条纹和界面错位错位，分析了γ-TiAl/ zeta-Ti_5Si_3界面的周期性界面条纹。

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来源
《Materials Science & Engineering. A, Structural Materials: Properties, Microstructure and Processing》 |2003年第2期|p.415-419|共5页
作者
H. Zhang; L.L. He; H.Q. Ye;
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作者单位

Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016, PR China;

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原文格式 PDF
正文语种 eng
中图分类工程材料学;
关键词
Ti-Al based alloy; zeta-Ti_5Si_3 phase; Orientation relationship; Transmission electron microscopy;

机译：Ti-Al基合金;Zeta-Ti_5Si_3相;取向关系;透射电镜;

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On orientation relationship of the Ti_5Si_3 precipitates in a TiAl alloy

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