A systematic investigation of the development of the orientation relationship in an fcc/bcc system

Gu, X.-F., Zhang, W.-Z. and Qiu, D. (2011) A systematic investigation of the development of the orientation relationship in an fcc/bcc system. Acta Materialia, 59 12: 4944-4956.


Author Gu, X.-F.
Zhang, W.-Z.
Qiu, D.
Title A systematic investigation of the development of the orientation relationship in an fcc/bcc system
Journal name Acta Materialia   Check publisher's open access policy
ISSN 0956-7151
1359-6454
1873-2453
Publication date 2011-07
Sub-type Article (original research)
DOI 10.1016/j.actamat.2011.04.039
Volume 59
Issue 12
Start page 4944
End page 4956
Total pages 13
Place of publication East Park, Kidlington, Oxford, U.K.
Publisher Pergamon
Collection year 2012
Language eng
Formatted abstract An analytical method, based on the Burgers vector content (BVC) model with the singular value decomposition method, has been developed for a systematic examination of three-dimensional misfit distributions, especially in an invariant line (IL) strain condition. This method is applied to a face-centered cubic/body-centered cubic system in either a coherent or semi-coherent state. The preferred orientation relationships (ORs) and interface orientations in the coherent state have been determined according to the criterion of minimum BVC. The determined OR is not unique, and ILs with different orientations are possible in this state, which is in agreement with the observations reported in the literature. Disagreement was found between the predictions from the BVC model and two of three typical ORs predicted from the O-line model for semi-coherent interfaces. The difference has been discussed in terms of the development of the ORs during the growth of the precipitates and the interfacial energy. The present analytical method is also applicable to evaluating the misfit in other systems.
Keyword Coherent misfit
Burgers vector content
Orientation relationship
Invariant line
wt-percent Cr
Near-coincidence-sites
Duplex stainless-steel
fcc-bcc Boundaries
O-lattice analyses
Crystallographic features
Precipitation systems
Phase-transformations
Interfacial structure
wt.% Cr
Face-centered cubic
Body-centered cubic
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
School of Engineering Publications
 
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