The Influence of Stoichiometric Defects and Foreign Atom Additions on Steady‐State Creep in Lead Sulfide Single Crystals

1968 ◽  
Vol 39 (6) ◽  
pp. 2869-2871 ◽  
Author(s):  
Martin S. Seltzer
Keyword(s):  
Steady State ◽  
Single Crystals ◽  
Lead Sulfide ◽  
Steady State Creep ◽  
Foreign Atom

Reduction in steady-state creep rates by aluminum-doping in zinc single crystals

1982 ◽  
Vol 16 (5) ◽  
pp. 551-554 ◽  
Author(s):  
K. Maruyama ◽  
S. Karashima ◽  
H. Oikawa ◽  
T. Sato
Keyword(s):  
Steady State ◽  
Single Crystals ◽  
Steady State Creep ◽  
Aluminum Doping

Features of the subboundary structure in deformed molybdenum single crystals

1978 ◽  
Vol 36 (1) ◽  
pp. 316-317
Author(s):  
M.M. Myshlyaev ◽  
I.I. Khodos ◽  
O.N. Senkov ◽  
Yu.A. Romanov
Keyword(s):  
Steady State ◽  
High Temperature ◽  
Single Crystals ◽  
Dislocation Line ◽  
Regular Structure ◽  
Steady State Creep ◽  
Burgers Vector

The subboundary structure corresponding to the high temperature steady-state creep of molybdenum single crystals is formed by both regular sites of dislocation nets and walls, various in structure and composition, (the nets are formed by two, three, five and six dislocation sets having different values of the angles between the Burgers vector Ḇ and the dislocation line ū ; the walls are formed by one, two and three sets of edge and mixed dislocations; the Burgers vectors of the dislocations are I/2 <III> and, <I00>) and by the sites of a more complex and less regular structure. Several of these are considered below.Fig.I represents a subboundary formed by five dislocation sets.Its regular sites (nets) can be formed by means of interaction of dislocations I and 4 with dislocations 2 (fig.2a). In several irregular sites (fig.I and 2b) no dislocations 2 are seen to be present, and neither dislocations 3 and 5 arisen from the reactions of dislocations 2 with dislocations I and 4.

In-Situ NMR Study of Dislocation Jump Distance During Creep of Pure and Doped NACL Single Crystals

1988 ◽  
Vol 142 ◽  
Author(s):  
K. Linga Murty ◽  
O. Kanert
Keyword(s):  
Steady State ◽  
Single Crystals ◽  
Pulse Sequence ◽  
Subgrain Size ◽  
Steady State Creep ◽  
Spin Lattice Relaxation ◽  
Relaxation Rates ◽  
Nmr Study ◽  
Jump Distance

AbstractNuclear magnetic resonance pulse techniques are used in-situ during creep of single crystals of NaCl to evaluate the contribution of mobile dislocations to spin relaxation. 23Na spin-lattice relaxation rates were measured in the rotating frame (T1ρ) during compression creep of single crystals of NaCl along [110] direction at 473K at an applied stress of 20 MPa. The relaxation rates are evaluated from the spin-echo height following π/2, locking and 67° pulse sequence. The height of the free induction decay decreased as soon as the load is applied followed by a gradual increase until the steady-state is reached, at which point a saturation value is observed corresponding to the constant steady-state creep-rate. The mean jump distance of the mobile dislocations, evaluated from the ratio of the signal heights without deformation and during creep, decreased with time/strain reaching a constant value during steady-state creep regime. The results are compared with the dislocation-dislocation spacing, subgrain size as well as the jump distance predicted from creep models. The effects of dilvalent Ca and solid solution with LiCl are examined.

scholarly journals Observations of pressure effects on the creep of ice single crystals

1996 ◽  
Vol 42 (140) ◽  
pp. 169-175 ◽  
Author(s):  
David M. Cole
Keyword(s):  
Steady State ◽  
Creep Rate ◽  
Single Crystals ◽  
Basal Slip ◽  
Confining Pressure ◽  
Absolute Temperature ◽  
Steady State Creep ◽  
Pressure Effects ◽  
Steady State Creep Rate ◽  
Experimental Errors

AbstractExperiments performed on ice single crystals oriented for basal slip indicate that the steady-state creep rate is only marginally affected by confining pressure up to 19 MPa, at a constant absolute temperature of 263 K. The observations Contradict earlier work at similar pressures and the disparity is examined in terms of experimental errors.

STEADY-STATE CREEP DEFORMATION OF Cd SINGLE CRYSTALS

2000 ◽  
Vol 11 (4) ◽  
pp. 321-327
Author(s):  
Nazım Uçar, ◽  
Güven Çankaya, ◽  
Ibrahim Karaman, ◽  
A. Ercan Ekinci, ◽  
Bahattin Düzgün,
Keyword(s):  
Steady State ◽  
Single Crystals ◽  
Creep Deformation ◽  
Steady State Creep

scholarly journals Observations of pressure effects on the creep of ice single crystals

1996 ◽  
Vol 42 (140) ◽  
pp. 169-175
Author(s):  
David M. Cole
Keyword(s):  
Steady State ◽  
Creep Rate ◽  
Single Crystals ◽  
Basal Slip ◽  
Confining Pressure ◽  
Absolute Temperature ◽  
Steady State Creep ◽  
Pressure Effects ◽  
Steady State Creep Rate ◽  
Experimental Errors

AbstractExperiments performed on ice single crystals oriented for basal slip indicate that the steady-state creep rate is only marginally affected by confining pressure up to 19 MPa, at a constant absolute temperature of 263 K. The observations Contradict earlier work at similar pressures and the disparity is examined in terms of experimental errors.

Sign in / Sign up

Export Citation Format

Share Document