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Orientation relationship and interfacial structure between zeta-Ti5Si3 precipitates and gamma-TiAl intermetallics
Yu, R; He, LL; Guo, JT; Ye, HQ; Lupinc, V
Corresponding AuthorYu, R()
2000-09-04
Source PublicationACTA MATERIALIA
ISSN1359-6454
Volume48Issue:14Pages:3701-3710
AbstractThe orientation relationship (OR) and the interface structure between Ti5Si3 precipitates and the mu TiAl phase have been investigated systematically. The habit plane of Ti,Si, in TiAl was determined to be (0001)(zeta)parallel to(111)(gamma) However, there is no low-index direction of the two phases parallel to each other in the plane. This "abnormal" OR has been predicted precisely from a recently developed geometrical method, in which the overlap of reciprocal lattice points of two adjoining crystals is utilized to obtain the optimum OR. In spite of the significant difference in crystal structure between TiAl and Ti,Si,, the interface was found to be semi-coherent with good matching and has the largest possible displacement shift complete lattice corresponding to the bicrystal. The energy of the interface is also discussed. The translational state between thr two lattices and the chemistry of the terminating plane of Ti,Si, have been determined by using high-resolution transmission electron microscopy. (C) 2000 Acta Metallurgica Inc. Published by Elsevier Science Ltd. AII rights reserved.
Keywordorientation relationship (OR) interface intermetallic compound transmission electron microscopy (TEM)
Indexed BySCI
Language英语
WOS Research AreaMaterials Science ; Metallurgy & Metallurgical Engineering
WOS SubjectMaterials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS IDWOS:000089382300008
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:37[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/111101
Collection中国科学院金属研究所
Corresponding AuthorYu, R
Affiliation1.Chinese Acad Sci, Met Res Inst, Atom Imaging Solids Lab, Shenyang 110015, Peoples R China
2.CNR, TEMPE, I-20133 Milan, Italy
Recommended Citation
GB/T 7714
Yu, R,He, LL,Guo, JT,et al. Orientation relationship and interfacial structure between zeta-Ti5Si3 precipitates and gamma-TiAl intermetallics[J]. ACTA MATERIALIA,2000,48(14):3701-3710.
APA Yu, R,He, LL,Guo, JT,Ye, HQ,&Lupinc, V.(2000).Orientation relationship and interfacial structure between zeta-Ti5Si3 precipitates and gamma-TiAl intermetallics.ACTA MATERIALIA,48(14),3701-3710.
MLA Yu, R,et al."Orientation relationship and interfacial structure between zeta-Ti5Si3 precipitates and gamma-TiAl intermetallics".ACTA MATERIALIA 48.14(2000):3701-3710.
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