Temperature-time dependence of the cyclic-creep activation energy of heat-resistant alloys

1982 ◽  
Vol 14 (11) ◽  
pp. 1466-1473
Author(s):  
V. P. Golub
Keyword(s):  
Activation Energy ◽  
Time Dependence ◽  
Cyclic Creep ◽  
Creep Activation Energy ◽  
Heat Resistant ◽  
Temperature Time

CREEP ACTIVATION ENERGY OF FLOW PROCESS IN Sn0.2Bi1.8Te3 SINGLE CRYSTALS

2004 ◽  
Vol 11 (04n05) ◽  
pp. 443-446
Author(s):  
P. H. SONI ◽  
C. F. DESAI ◽  
S. R. BHAVSAR
Keyword(s):  
Activation Energy ◽  
Time Dependence ◽  
Temperature Dependence ◽  
Single Crystals ◽  
Vickers Microhardness ◽  
Indentation Creep ◽  
Flow Process ◽  
Creep Activation Energy ◽  
Temperature Range ◽  
Different Temperatures

Temperature dependence of the Vickers microhardness of Sn 0.2 Bi 1.8 Te 3 single crystals has been studied. Loading time dependence of microhardness at different temperatures has been used for creep study in the temperature range 303 K–373 K. The activation energy for indentation creep of the crystals has been evaluated.

Temperature-time dependence of the strength of metal - polymer adhesive contacts

1978 ◽  
Vol 13 (3) ◽  
pp. 468-471 ◽  
Author(s):  
V. R. Regel' ◽  
A. M. Leksovskii ◽  
O. F. Kireenko
Keyword(s):  
Time Dependence ◽  
Polymer Adhesive ◽  
Adhesive Contacts ◽  
Temperature Time ◽  
Metal Polymer

The temperature-time dependence of the elastic modulus for oriented polymers

1986 ◽  
Vol 28 (9) ◽  
pp. 2183-2192 ◽  
Author(s):  
S.V. Bronnikov ◽  
V.I. Vettegren' ◽  
L.N. Korzhavin ◽  
S.Ya. Frenkel'
Keyword(s):  
Elastic Modulus ◽  
Time Dependence ◽  
Oriented Polymers ◽  
Temperature Time

Effect of the type of stress state on the temperature-time dependence of the strength of polystyrene

1973 ◽  
Vol 7 (2) ◽  
pp. 171-174
Author(s):  
B. N. Narzullaev ◽  
A. I. Khukmatov ◽  
P. G. �rfan
Keyword(s):  
Stress State ◽  
Time Dependence ◽  
Type Of Stress State ◽  
Temperature Time

Temperature-time dependence of the yield point of Ruby by compression and extension

1977 ◽  
Vol 43 (1) ◽  
pp. K49-K52 ◽  
Author(s):  
N. N. Voinova ◽  
V. G. Govorkov
Keyword(s):  
Time Dependence ◽  
Yield Point ◽  
Temperature Time

Microstructures of Bi-based oxide superconductors doped with Sb

1992 ◽  
Vol 7 (10) ◽  
pp. 2667-2672 ◽  
Author(s):  
Yoshio Masuda ◽  
Rikuro Ogawa ◽  
Yoshio Kawate ◽  
Naohiro Hara ◽  
Tsuyoshi Tateishi
Keyword(s):  
Activation Energy ◽  
Time Dependence ◽  
Crystal Structures ◽  
Sol Gel ◽  
Lattice Parameters ◽  
Oxide Superconductors ◽  
Arrhenius Plots ◽  
Gel Method ◽  
Superconducting Phases ◽  
Xrd Method

Using Bi-based oxide superconductors of the Bi0.96Pb0.24-xSbxSr1.0Ca 1.1 Cu1.6Oy composition which were prepared by the sol-gel method, production of the high-Tc phase and also microstructures of the high-Tc and the low-Tc phases were investigated using the XRD method and the TEM technique. Two superconducting phases showed good linearities of shrinkages of the a, b, and c lattice parameters as the Sb content increased, and so it has been found that Sb can be included in superconducting crystal structures. However, all shrinkages were below 1%. The activation energy of Sb diffusion was estimated from time dependence of changes of the lattice parameters using the Arrhenius plots. Its energy was from 510 to 593 Kj/mol.

scholarly journals The Creep Activation Energies of Ice

1978 ◽  
Vol 21 (85) ◽  
pp. 429-444 ◽  
Author(s):  
D. R. Homer ◽  
J. W. Glen
Keyword(s):  
Activation Energy ◽  
Grain Boundary ◽  
Creep Deformation ◽  
Tensile Axis ◽  
Strain Rates ◽  
Boundary Slip ◽  
Creep Tests ◽  
Creep Activation Energy ◽  
Single Grain ◽  
Image Position

AbstractMonocrystals and bicrystals of ice have been creep tested at temperatures between 4 and — 30°C. The bicrystals had a single grain boundary running parallel to the tensile axis; this configuration inhibited grain-boundary slip between the two grains. The creep tests, which were carried out at constant stress σ and temperature T, yielded data of strain ϵ for time elapsed since the start of the test. These data showed accelerating creep for both monocrystals and bicrystals at all strain levels. Strain-rates were derived at strains of 0.01, 0.05. and 0.10, and these rates were fitted to the expressionk is Boltzmann’s constant and E is the creep activation energy. Derived values of n were 1.9 for monocrystals and 2.9 for bicrystals. The creep activation energy was found to be 78 kJ/mol for monocrystals and 75 kJ/mol for bicrystals. The processes of creep deformation in mono-, bi- and polycrystals are discussed.

Cyclic creep and relaxation of heat-resistant alloys

1969 ◽  
Vol 1 (5) ◽  
pp. 487-490 ◽  
Author(s):  
L. B. Getsov
Keyword(s):  
Cyclic Creep ◽  
Heat Resistant
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