scholarly journals Controllable fatigue cracking mechanisms of copper bicrystals with a coherent twin boundary

2014 ◽  
Vol 5 (1) ◽  
Author(s):  
L.L. Li ◽  
Z.J. Zhang ◽  
P Zhang ◽  
Z.G. Wang ◽  
Z.F. Zhang
Keyword(s):  
Twin Boundary ◽  
Fatigue Cracking ◽  
Coherent Twin Boundary ◽  
Cracking Mechanisms

Mechanical response and plastic deformation of coherent twin boundary with perfect and defective structures

2020 ◽  
Vol 141 ◽  
pp. 103266 ◽  
Author(s):  
Liang Zhang ◽  
Wei Mao ◽  
Mao Liu ◽  
Yasushi Shibuta
Keyword(s):  
Plastic Deformation ◽  
Twin Boundary ◽  
Mechanical Response ◽  
Coherent Twin Boundary

Atomic-scale simulation of screw dislocation/coherent twin boundary interaction in Al, Au, Cu and Ni

2011 ◽  
Vol 59 (4) ◽  
pp. 1456-1463 ◽  
Author(s):  
M. Chassagne ◽  
M. Legros ◽  
D. Rodney
Keyword(s):  
Screw Dislocation ◽  
Twin Boundary ◽  
Atomic Scale ◽  
Coherent Twin Boundary ◽  
Boundary Interaction

Repulsive force between screw dislocation and coherent twin boundary in aluminum and copper

2007 ◽  
Vol 75 (21) ◽  
Author(s):  
Zhiming Chen ◽  
Zhaohui Jin ◽  
Huajian Gao
Keyword(s):  
Screw Dislocation ◽  
Twin Boundary ◽  
Repulsive Force ◽  
Coherent Twin Boundary

Atomic and Electronic Structure Analysis of Σ=3, 9 and 27 Boundary, and Multiple Junction in β-SiC

1999 ◽  
Vol 589 ◽  
Author(s):  
K. Tanaka ◽  
M. Kohyama
Keyword(s):  
Electronic Structure ◽  
Energy Loss ◽  
Twin Boundary ◽  
Structural Unit ◽  
High Resolution Electron Microscopy ◽  
Coherent Twin Boundary ◽  
Atomic Structures ◽  
Resolution Electron ◽  
Electron Energy Loss ◽  
Atomic And Electronic Structure

AbstractThe atomic structures of σ=3, 9 and 27 boundaries, and multiple junctions in β-SiC were studied by high-resolution electron microscopy (HREM). Especially, the existence of the variety of structures of σ=3 incoherent twin boundaries and σ=27 boundary was shown by HREM. The structures of σ=3, 9 and 27 boundary were explained by structural unit models. Electron energy-loss spectroscopy (EELS) was used to investigate the electronic structure of grain boundaries. The spectra recorded from bulk, {111}σ=3 coherent twin boundary (CTB) and {1211}σ=3 incoherent twin boundary (ITB) did not show significant differences. Especially, the energy-loss corresponding to carbon 1s-to Φ* transition was not found. It indicates that C atoms exist at grain boundary on the similar condition of bulk

Observation of partial dislocations on a coherent twin boundary

1971 ◽  
Vol 24 (188) ◽  
pp. 225-230 ◽  
Author(s):  
P. H. Pumphrey ◽  
K. M. Bowkett
Keyword(s):  
Twin Boundary ◽  
Coherent Twin Boundary ◽  
Partial Dislocations

scholarly journals THE INTERACTION OF DISLOCATIONS AND A COHERENT TWIN BOUNDARY IN ORDERED Cu3AU AS STUDIED BY IN-SITU DEFORMATION IN A TEM

1990 ◽  
Vol 51 (C1) ◽  
pp. C1-663-C1-668
Author(s):  
F. D. TICHELAAR ◽  
F. W. SCHAPINK
Keyword(s):  
Twin Boundary ◽  
Coherent Twin Boundary ◽  
In Situ Deformation

Effects of alloy compositions on hydrogen behaviors at a nickel grain boundary and a coherent twin boundary

2020 ◽  
Vol 45 (18) ◽  
pp. 10951-10961
Author(s):  
Jun Hui ◽  
Guo Yang ◽  
Min Liu ◽  
Wenguan Liu ◽  
Biao Wang
Keyword(s):  
Grain Boundary ◽  
Twin Boundary ◽  
Coherent Twin Boundary

Identifying fracture mechanisms with the EBSP technique

1994 ◽  
Vol 52 ◽  
pp. 618-619
Author(s):  
D. C. Slavik
Keyword(s):  
Crack Path ◽  
Fatigue Cracking ◽  
Fracture Mechanisms ◽  
Statistical Sampling ◽  
Large Samples ◽  
Cu Alloys ◽  
Modeling Fracture ◽  
The Matrix ◽  
Cracking Mechanisms ◽  
Individual Grains

Stress corrosion cracking (SCC), liquid metal embrittlement, and corrosion fatigue cracking mechanisms can be evaluated by measuring grain boundary misorientations along the crack path or the crystallography of fracture surface facets. The crystallographic orientation of individual grains can be measured with back Laue, Kikuchi, selected area channelling pattern (SACP), or electron back scatter pattern (EBSP) techniques. EBSPs are unique since a large statistical sampling of individual grains or subgrains as small as a micrometer in diameter can be probed on single large samples.For intergranular fracture, low angle and coincident site boundaries (twins as an example) are typically SCC resistant compared to general high angle grain boundaries. This observation, important for modeling fracture or improving microstructural performance, can be identified by sampling boundaries in the matrix and along the fracture path with EBSP or SACP techniques.Transgranular fatigue mechanisms, dramatically influenced by the test environments for Al-Li-Cu alloys as shown in Figures 1a and b, can be identified my measuring fracture facet crystallographic orientations.

Low-cycle fatigue-cracking mechanisms in fcc crystalline materials

2010 ◽  
Vol 91 (2) ◽  
pp. 229-249 ◽  
Author(s):  
P. Zhang ◽  
S. Qu ◽  
Q.Q. Duan ◽  
S.D. Wu ◽  
S.X. Li ◽  
...  
Keyword(s):  
Low Cycle Fatigue ◽  
Fatigue Cracking ◽  
Cycle Fatigue ◽  
Crystalline Materials ◽  
Cracking Mechanisms

scholarly journals Influence of intrinsic kink-like defects on screw dislocation – coherent twin boundary interactions in copper

2017 ◽  
Vol 123 ◽  
pp. 383-393 ◽  
Author(s):  
Qiongjiali Fang ◽  
Frederic Sansoz
Keyword(s):  
Screw Dislocation ◽  
Twin Boundary ◽  
Coherent Twin Boundary
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