Slip System Selection and Taylor Factor Evolution in FCC Metals

2020 ◽  
Author(s):  
Jürgen Hirsch ◽  
Evgenij Aryshesnkij ◽  
Sergey Konovalov
Keyword(s):  
Slip System ◽  
Taylor Factor ◽  
Fcc Metals ◽  
System Selection

050 Dislocation Dynamics Modeling of Slip System Interaction in FCC Metals

2015 ◽  
Vol 2015.28 (0) ◽  
pp. _050-1_-_050-3_
Author(s):  
Haruka Kawate ◽  
Akiyuki Takahashi
Keyword(s):  
Slip System ◽  
Dislocation Dynamics ◽  
Dynamics Modeling ◽  
Fcc Metals

Universal Scaled Strength Behaviour for Micropillars and Nanoporous Materials

2009 ◽  
Vol 1185 ◽  
Author(s):  
Brian Derby ◽  
Rui Dou
Keyword(s):  
Shear Modulus ◽  
Slip System ◽  
Strong Correlation ◽  
Nanoporous Materials ◽  
Nanoporous Gold ◽  
Burgers Vector ◽  
Fcc Metals ◽  
Specimen Diameter ◽  
Bcc Structure ◽  
Fcc Structure

AbstractThe strength of submicron FCC structure metal columns, σ, fabricated by FIB machining or electrodeposition, shows a strong correlation with specimen diameter, d, with σ/μ = A(d/b)−0.63, where A is a constant, μ is the single crystal shear modulus resolved onto the slip system and b is the Burgers' vector. The strength of BCC structure metals does not show such a well defined correlation with size across different metals but the data occupies the same region of parameter space as with the FCC metals. Nanoporous gold specimens show a similar size-correlated behaviour but with an exponent of −0.5. This may indicate different mechanisms operating in each case.

Comparison of the minimum plastic spin and rate sensitive slip theories for loading of symmetrical crystal orientations

1990 ◽  
Vol 427 (1872) ◽  
pp. 201-219 ◽  
Keyword(s):  
Slip System ◽  
Uniaxial Tension ◽  
Plane Strain ◽  
Slip Systems ◽  
Cubic Crystals ◽  
Multiple Slip ◽  
Plastic Spin ◽  
Rate Dependent ◽  
The One ◽  
System Selection

The plastic loading of face-centred cubic crystals along directions of symmetry leads to ambiguities in slip system selection. A solution to this problem has been proposed (Fuh & Havner, Proc. R. Soc. Lond . A 427, 193-239 (1989)) by postulating that the operating slip combination is the one which corresponds to the minimum plastic spin (MPS). A comparison is made between the MPS and rate-dependent slip theories. The predictions obtained are identical for the following cases: (i) (110) loading in channel die compression (with one exception) and (ii) all the multiple slip orientations in uniaxial tension. In the case of [100] pure plane strain compression, there is agreement for the four slip-system orientations, but not when six systems are required in the MPS analysis. It is shown that the symmetry of the slip distributions called for by the MPS and rate sensitive approaches is responsible for the broad equivalence between the predictions of the two theories. In each of the examples discussed, the number of operating slip systems is determined by symmetry considerations, leading to the operation of two, four, six or eight slip-systems, rather than by the number of prescribed constraints.

scholarly journals Assessment of advanced Taylor models, the Taylor factor and yield-surface exponent for FCC metals

2019 ◽  
Vol 114 ◽  
pp. 144-160 ◽  
Author(s):  
K. Zhang ◽  
B. Holmedal ◽  
T. Mánik ◽  
A. Saai
Keyword(s):  
Yield Surface ◽  
Taylor Factor ◽  
Fcc Metals ◽  
Taylor Models

In situ Tensile Experiments at Low Temperatures on Niobium Single Crystals by H.V.E.M.

1975 ◽  
Vol 33 ◽  
pp. 58-59
Author(s):  
F. H. Louchet ◽  
L. P. Kubin
Keyword(s):  
Electron Microscope ◽  
Transition Temperature ◽  
Low Temperature ◽  
Slip System ◽  
Low Temperatures ◽  
Tensile Axis ◽  
Image Intensifier ◽  
Screw Dislocations ◽  
Source Operation

Experiments have been carried out on the 3 MeV electron microscope in Toulouse. The low temperature straining holder has been previously described Images given by an image intensifier are recorded on magnetic tape.The microtensile niobium samples are cut in a plane with the two operative slip directions [111] and lying in the foil plane. The tensile axis is near [011].Our results concern:- The transition temperature of niobium near 220 K: at this temperature and below an increasing difference appears between the mobilities of the screw and edge portions of dislocations loops. Source operation and interactions between screw dislocations of different slip system have been recorded.

A dipole model for the cross-slip of screw dislocations in fcc metals

2002 ◽  
Vol 82 (9) ◽  
pp. 1691-1711 ◽  
Author(s):  
L. M. Brown
Keyword(s):  
Cross Slip ◽  
Dipole Model ◽  
Screw Dislocations ◽  
Fcc Metals ◽  
The Cross

INTERACTION BETWEEN LATTICE DISLOCATIONS AND GRAIN BOUNDARIES IN FCC METALS AND ORDERED COMPOUNDS

1990 ◽  
Vol 51 (C1) ◽  
pp. C1-311-C1-316 ◽  
Author(s):  
B. J. PESTMAN ◽  
J. Th. M. DE HOSSON ◽  
V. VITEK ◽  
F. W. SCHAPINK
Keyword(s):  
Grain Boundaries ◽  
Fcc Metals

Channel Assignment and Access System Selection in Heterogeneous Wireless Network with Unlicensed Bands

2020 ◽  
Author(s):  
Kazuhiko Kinoshita ◽  
Kazuki Ginnan ◽  
Keita Kawano ◽  
Hiroki Nakayama ◽  
Tsunemasa Hayashi ◽  
...  
Keyword(s):  
Wireless Network ◽  
Channel Assignment ◽  
Heterogeneous Wireless Network ◽  
Access System ◽  
Unlicensed Bands ◽  
System Selection
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