An analytical approach and experimental confirmation of dislocation-twin boundary interactions in titanium
An analytical approach and experimental confirmation of dislocation-twin boundary interactions in titanium
The morphology of f1012g1011 deformation twins formed in commercial purity titanium during an initial pass of equal-channel angular pressing was studied by transmission electron microscopy (TEM). The corresponding diffraction patterns show a symmetry line splitting of (1012) twin boundaries (TB) which is related to the presence of interfacial defects. A simple modeling for the interaction between non-screw a-slip lattice dislocations (Burgers vector b = 1/3 [1120]) and the (1012) twin plane is used according to crystallographic geometry and vector conservation. The results show that dislocation dissociation into different Frank partial dislocations on the interfacial plane is more favorable than its transmission to the other side of the interface. The formation of the Frank partials at the TB can produce a small change in the TB misorientation angle and this is consistent with the symmetry line splitting of the (1012) twin boundaries observed by TEM.
4476-4483
Zhang, Yue
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Dong, Zhoa Shi
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Wang, Jing Tao
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Liu, Jin Qiang
6e21d110-b5db-431f-a48b-8038069341a8
Gao, Nong
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Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Zhang, Yue
1dae6e6f-b4b3-4396-947c-e600b478da16
Dong, Zhoa Shi
d72f5793-6aaf-4b99-8b0d-643e7a761fa0
Wang, Jing Tao
10285b03-ac4f-46d7-b8c9-7a4c0dad72d1
Liu, Jin Qiang
6e21d110-b5db-431f-a48b-8038069341a8
Gao, Nong
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Langdon, Terence G.
86e69b4f-e16d-4830-bf8a-5a9c11f0de86
Zhang, Yue, Dong, Zhoa Shi, Wang, Jing Tao, Liu, Jin Qiang, Gao, Nong and Langdon, Terence G.
(2013)
An analytical approach and experimental confirmation of dislocation-twin boundary interactions in titanium.
Journal of Materials Science, 48 (3), .
(doi:10.1007/s10853-013-7284-y).
Abstract
The morphology of f1012g1011 deformation twins formed in commercial purity titanium during an initial pass of equal-channel angular pressing was studied by transmission electron microscopy (TEM). The corresponding diffraction patterns show a symmetry line splitting of (1012) twin boundaries (TB) which is related to the presence of interfacial defects. A simple modeling for the interaction between non-screw a-slip lattice dislocations (Burgers vector b = 1/3 [1120]) and the (1012) twin plane is used according to crystallographic geometry and vector conservation. The results show that dislocation dissociation into different Frank partial dislocations on the interfacial plane is more favorable than its transmission to the other side of the interface. The formation of the Frank partials at the TB can produce a small change in the TB misorientation angle and this is consistent with the symmetry line splitting of the (1012) twin boundaries observed by TEM.
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e-pub ahead of print date: July 2013
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 350952
URI: http://eprints.soton.ac.uk/id/eprint/350952
ISSN: 0022-2461
PURE UUID: 2dd20134-3970-4454-b27e-c710b60dd13d
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Date deposited: 11 Apr 2013 10:21
Last modified: 15 Mar 2024 03:13
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Author:
Yue Zhang
Author:
Zhoa Shi Dong
Author:
Jing Tao Wang
Author:
Jin Qiang Liu
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