scholarly journals Competing grain-boundary- and dislocation-mediated mechanisms in plastic strain recovery in nanocrystalline aluminum

2009 ◽  
Vol 106 (38) ◽  
pp. 16108-16113 ◽  
Author(s):  
X. Li ◽  
Y. Wei ◽  
W. Yang ◽  
H. Gao
Keyword(s):  
Plastic Strain ◽  
Grain Boundary ◽  
Strain Recovery ◽  
Nanocrystalline Aluminum

scholarly journals Grain boundary segregation and intermetallic precipitation in coarsening resistant nanocrystalline aluminum alloys

2019 ◽  
Vol 165 ◽  
pp. 698-708 ◽  
Author(s):  
A. Devaraj ◽  
W. Wang ◽  
R. Vemuri ◽  
L. Kovarik ◽  
X. Jiang ◽  
...  
Keyword(s):  
Aluminum Alloys ◽  
Grain Boundary ◽  
Boundary Segregation ◽  
Grain Boundary Segregation ◽  
Nanocrystalline Aluminum

scholarly journals Slip transfer through a general high angle grain boundary in nanocrystalline aluminum

2007 ◽  
Vol 91 (11) ◽  
pp. 111914 ◽  
Author(s):  
C. Brandl ◽  
E. Bitzek ◽  
P. M. Derlet ◽  
H. Van Swygenhoven
Keyword(s):  
Grain Boundary ◽  
High Angle ◽  
Slip Transfer ◽  
Nanocrystalline Aluminum

scholarly journals Measuring method of plastic strain using grain boundary as a contour pattern.

1990 ◽  
Vol 56 (521) ◽  
pp. 146-149
Author(s):  
Hitoshi MORITOKI ◽  
Shinzou NISHIMURA ◽  
Akihiro ASAKAWA ◽  
Yoshiki TSUKAMOTO ◽  
Mutsuo WATANABE ◽  
...  
Keyword(s):  
Plastic Strain ◽  
Grain Boundary ◽  
Measuring Method ◽  
Contour Pattern

scholarly journals Equivalent plastic strain gradient plasticity with grain boundary hardening and comparison to discrete dislocation dynamics

2015 ◽  
Vol 471 (2184) ◽  
pp. 20150388 ◽  
Author(s):  
E. Bayerschen ◽  
M. Stricker ◽  
S. Wulfinghoff ◽  
D. Weygand ◽  
T. Böhlke
Keyword(s):  
Plastic Strain ◽  
Yield Strength ◽  
Grain Boundary ◽  
Continuum Model ◽  
Equivalent Plastic Strain ◽  
Elastic Interaction ◽  
Dislocation Dynamics ◽  
Discrete Dislocation Dynamics ◽  
Discrete Dislocation ◽  
The Continuum

The gradient crystal plasticity framework of Wulfinghoff et al. (Wulfinghoff et al. 2013 Int. J. Plasticity 51, 33–46. ( doi:10.1016/j.ijplas.2013.07.001 )), incorporating an equivalent plastic strain γ eq and grain boundary (GB) yielding, is extended with GB hardening. By comparison to averaged results from many discrete dislocation dynamics (DDD) simulations of an aluminium-type tricrystal under tensile loading, the new hardening parameter of the continuum model is calibrated. Although the GBs in the discrete simulations are impenetrable, an infinite GB yield strength, corresponding to microhard GB conditions, is not applicable in the continuum model. A combination of a finite GB yield strength with an isotropic bulk Voce hardening relation alone also fails to model the plastic strain profiles obtained by DDD. Instead, a finite GB yield strength in combination with GB hardening depending on the equivalent plastic strain at the GBs is shown to give a better agreement to DDD results. The differences in the plastic strain profiles obtained in DDD simulations by using different orientations of the central grain could not be captured. This indicates that the misorientation-dependent elastic interaction of dislocations reaching over the GBs should also be included in the continuum model.

On plastic strain recovery in freestanding nanocrystalline metal thin films

2008 ◽  
Vol 59 (9) ◽  
pp. 921-926 ◽  
Author(s):  
Jagannathan Rajagopalan ◽  
Jong H. Han ◽  
M. Taher A. Saif
Keyword(s):  
Thin Films ◽  
Plastic Strain ◽  
Strain Recovery ◽  
Nanocrystalline Metal ◽  
Metal Thin Films

Deformation behavior in bulk nanocrystalline-ultrafine aluminum: in situ evidence of plastic strain recovery

2009 ◽  
Vol 60 (7) ◽  
pp. 520-523 ◽  
Author(s):  
I LONARDELLI ◽  
J ALMER ◽  
G ISCHIA ◽  
C MENAPACE ◽  
A MOLINARI
Keyword(s):  
Plastic Strain ◽  
Deformation Behavior ◽  
Strain Recovery ◽  
Ultrafine Aluminum ◽  
Bulk Nanocrystalline
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