Atomic-scale investigation of interface-facilitated deformation twinning in severely deformed Ag-Cu nanolamellar composites

@article{An2015AtomicscaleIO,
  title={Atomic-scale investigation of interface-facilitated deformation twinning in severely deformed Ag-Cu nanolamellar composites},
  author={Xianghai An and Suming Zhu and Cao Yang and Megumi Kawasaki and Xiaozhou Liao and Simon P. Ringer and Jian Feng Nie and Terence G. Langdon and Yuntian Zhu},
  journal={Applied Physics Letters},
  year={2015},
  volume={107},
  pages={011901}
}
We report an atomic-scale investigation of interface-facilitated deformation twinning behaviour in Ag-Cu nanolamellar composites. Profuse twinning activities in Ag supply partial dislocations to directly transmit across the Ag-Cu lamellar interface that promotes deformation twinning in the neighbouring Cu lamellae although the interface is severely deformed. The trans-interface twin bands change the local structure at the interface. Our analysis suggests that the orientation relationship and… 

Figures from this paper

Hetero interface and twin boundary mediated strengthening in nano-twinned Cu//Ag multilayered materials
TLDR
The confined layer slip of dislocation is found to be the dominant plastic deformation mechanism for twin-free hetero-twin multilayered materials and the strength versus twin spacing in nano-Twinned samples follows the conventional Hall-Petch relationship.
Deformation mechanisms to ameliorate the mechanical properties of novel TRIP/TWIP Co-Cr-Mo-(Cu) ultrafine eutectic alloys
TLDR
Investigation of the fractured samples indicates that the CCMCu alloy exhibits higher plastic deformability and combinatorial mechanisms for improved plastic behavior, and the mechanical properties of eutectic alloys in the Co-Cr-Mo system can be ameliorated by micro-alloying such as Cu addition.
On the Heterogeneity of Local Shear Strain Induced by High‐Pressure Torsion
A ductile duplex stainless steel consisting of a ferrite phase and an austenitic phase is chosen as a model material to investigate the development of shear strain patterns under high‐pressure
Extreme shear-deformation-induced modification of defect structures and hierarchical microstructure in an Al–Si alloy
Extreme shear deformation is used for several material processing methods and is unavoidable in many engineering applications in which two surfaces are in relative motion against each other while in
Twinning-induced plasticity (TWIP) and work hardening in Ti-based metallic glass matrix composites
The present study demonstrates that Ti-based metallic glass matrix composites (MGMCs) with a normal composition of Ti43Zr32Ni6Ta5Be14 containing ductile dendrites dispersed in the glass matrix has
...
...

References

SHOWING 1-10 OF 29 REFERENCES
Atomic-level study of twin nucleation from face-centered-cubic/body-centered-cubic interfaces in nanolamellar composites
We report deformation twinning in Cu within accumulative roll-bonded Cu-Nb nanolamellar composites. Twins appear connected to the Nb{112}//Cu{112} interface with the Kurdjumov-Sachs orientation
Self-thickening, cross-slip deformation twinning model
We propose a cross-slip deformation twinning model based upon our experimental in situ deformation of Cu–Ge alloys using a transmission electron microscope. During the deformation, Shockley partials
New deformation twinning mechanism generates zero macroscopic strain in nanocrystalline metals.
TLDR
It is reported that the vast majority of deformation twins in nanocrystalline Al, Ni, and Cu, contrary to popular belief, yield zero net macroscopic strain.
...
...