Stacking faults and the gamma-surface on first-order pyramidal planes in alpha-titanium

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Title: Stacking faults and the gamma-surface on first-order pyramidal planes in alpha-titanium
Authors: Ready, AJ
Haynes, PD
Rugg, D
Sutton, AP
Item Type: Journal Article
Abstract: Using first principles methods we calculated the entire gamma-surface of the first-order pyramidal planes in alpha-titanium. Slip on these planes involving dislocations with c+a-type Burgers vectors is one means by which alpha-titanium polycrystals may supplement slip on prism planes with a-type Burgers vectors to maintain ductility. We find one low energy and one high energy stacking fault with energies of 163~mJ/m2 and 681~mJ/m2 respectively. Contrary to previous suggestions we do not find a stable stable stacking fault at (c+a})/2.
Issue Date: 9-Mar-2017
Date of Acceptance: 3-Feb-2017
URI: http://hdl.handle.net/10044/1/44348
DOI: https://dx.doi.org/10.1080/14786435.2017.1292059
ISSN: 1478-6435
Publisher: Taylor & Francis
Start Page: 1129
End Page: 1143
Journal / Book Title: Philosophical Magazine
Volume: 97
Issue: 14
Copyright Statement: © 2017 Informa UK Limited, trading as Taylor & Francis Group. This is an Accepted Manuscript of an article published by Taylor & Francis in Philosophical Margazine on Mar 2017, available online: http://www.tandfonline.com/10.1080/14786435.2017.1292059
Sponsor/Funder: Engineering and Physical Sciences Research Council
Funder's Grant Number: EP/G036888/1
Keywords: Science & Technology
Technology
Physical Sciences
Materials Science, Multidisciplinary
Metallurgy & Metallurgical Engineering
Physics, Applied
Physics, Condensed Matter
Materials Science
Physics
Titanium
density functional theory
stacking fault
gamma-surface
pyramidal
hexagonal close-packed
HCP METALS
SCREW DISLOCATIONS
CUBIC-CRYSTALS
1ST PRINCIPLES
CORE STRUCTURE
SLIP
TI
DEFORMATION
POTENTIALS
ALLOYS
Materials
01 Mathematical Sciences
02 Physical Sciences
09 Engineering
Publication Status: Published
Appears in Collections:Faculty of Engineering
Condensed Matter Theory
Materials
Physics
Faculty of Natural Sciences



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