A TEM study of the habit plane structure of intragrainular proeutectoid alpha precipitates in a Ti-7.26wt%Cr alloy

Ye, F., Zhang, W.Z. and Qiu, D. (2004) A TEM study of the habit plane structure of intragrainular proeutectoid alpha precipitates in a Ti-7.26wt%Cr alloy. Acta Materialia, 52 8: 2449-2460.


Author Ye, F.
Zhang, W.Z.
Qiu, D.
Title A TEM study of the habit plane structure of intragrainular proeutectoid alpha precipitates in a Ti-7.26wt%Cr alloy
Journal name Acta Materialia   Check publisher's open access policy
ISSN 1359-6454
Publication date 2004
Sub-type Article (original research)
DOI 10.1016/j.actamat.2004.01.037
Volume 52
Issue 8
Start page 2449
End page 2460
Total pages 12
Place of publication Oxford, England
Publisher Pergamon-elsevier Science Ltd
Language eng
Subject 0912 Materials Engineering
Abstract The crystallography and the structure of the habit plane of proeutectoid alpha precipitates in beta matrix in a Ti-7.26 wt%Cl were studied using TEM. The orientation relationship was found to deviate slightly from the ideal Burgers orientation relationship. The habit plane of precipitates was found to be normal to a particular set of Deltag's. A set of dislocations, about 11 nm apart, were observed on the habit plane of the precipitates. The Burgers vector of the dislocations, as determined by g (.) b contrast analyses, is [1 -11](beta)/2([2-1-13](alpha)/6). This Burgers vector is different from those determined by previous investigations. The observations are discussed in terms of an analytical O-line model and tend to Support the prediction of the O-line model. (C) 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Keyword Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
phase transformations
crystallography
interface
dislocation
Ti-cr Alloy
O-lattice Analyses
Percent Nb Alloy
Interphase Boundary
Orientation Relationships
Interfacial Misfit
Crystallography
Systems
Plate
Beta
Q-Index Code C1

Document type: Journal Article
Sub-type: Article (original research)
Collections: Excellence in Research Australia (ERA) - Collection
School of Mechanical & Mining Engineering Publications
 
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