The five-parameter grain boundary character and energy distributions of a fully austenitic high-manganese steel using three dimensional data

Beladi,H, Nuhfer,NT and Rohrer,GS 2014, The five-parameter grain boundary character and energy distributions of a fully austenitic high-manganese steel using three dimensional data, Acta materialia, vol. 70, pp. 281-289, doi: 10.1016/j.actamat.2014.02.038.

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Title The five-parameter grain boundary character and energy distributions of a fully austenitic high-manganese steel using three dimensional data
Author(s) Beladi,HORCID iD for Beladi,H orcid.org/0000-0003-0131-707X
Nuhfer,NT
Rohrer,GS
Journal name Acta materialia
Volume number 70
Start page 281
End page 289
Publisher Elsevier
Place of publication London, England
Publication date 2014-05-15
ISSN 1359-6454
Keyword(s) Electron backscattering diffraction
Focused ion beam
Grain boundary energy
Microstructure
TWIP steel
Science & Technology
Technology
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Materials Science
5 MACROSCOPIC PARAMETERS
CRYSTALLITE ROTATION METHOD
STACKING-FAULT ENERGY
MECHANICAL-PROPERTIES
INTERFACIAL ENERGIES
PLANE DISTRIBUTIONS
TILT BOUNDARIES
DEFORMATION
COPPER
MISORIENTATION
Summary The three-dimensional interfacial grain boundary network in a fully austenitic high-manganese steel was studied as a function of all five macroscopic crystallographic parameters (i.e. lattice misorientation and grain boundary plane normal) using electron backscattering diffraction mapping in conjunction with focused ion beam serial sectioning. The relative grain boundary area and energy distributions were strongly influenced by both the grain boundary plane orientation and the lattice misorientation. Grain boundaries terminated by (1 1 1) plane orientations revealed relatively higher populations and lower energies compared with other boundaries. The most frequently observed grain boundaries were {1 1 1} symmetric twist boundaries with the Σ3 misorientation, which also had the lowest energy. On average, the relative areas of different grain boundary types were inversely correlated to their energies. A comparison between the current result and previously reported observations (e.g. high-purity Ni) revealed that polycrystals with the same atomic structure (e.g. face-centered cubic) have very similar grain boundary character and energy distributions. © 2014 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
Language eng
DOI 10.1016/j.actamat.2014.02.038
Field of Research 091299 Materials Engineering not elsewhere classified
Socio Economic Objective 970109 Expanding Knowledge in Engineering
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Copyright notice ©2014, Elsevier
Persistent URL http://hdl.handle.net/10536/DRO/DU:30069647

Document type: Journal Article
Collection: Institute for Frontier Materials
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