Effective stress in steady state creep in an Al-5.5 at.% Mg solid solution

1974 ◽  
Vol 22 (4) ◽  
pp. 465-472 ◽  
Author(s):  
K Kuchařová ◽  
I Saxl ◽  
J Čadek
Keyword(s):  
Solid Solution ◽  
Steady State ◽  
Effective Stress ◽  
Steady State Creep

Improved tensile creep properties of yttrium- and lanthanum-doped alumina: a solid solution effect

2001 ◽  
Vol 16 (2) ◽  
pp. 425-429 ◽  
Author(s):  
Junghyun Cho ◽  
Chong Min Wang ◽  
Helen M. Chan ◽  
J. M. Rickman ◽  
Martin P. Harmer
Keyword(s):  
Solid Solution ◽  
Steady State ◽  
Creep Behavior ◽  
Solubility Limit ◽  
Steady State Creep ◽  
Tensile Creep ◽  
Creep Properties ◽  
Uniform Microstructure ◽  
Equiaxed Grains ◽  
Rare Earth Doped

The tensile creep behavior of yttrium- and lanthanum-doped alumina (at dopant levels below the solubility limit) was examined. Both compositions (100 ppm yttrium, 100 ppm lanthanum) exhibited a uniform microstructure consisting of fine, equiaxed grains. The creep resistance of both doped aluminas was enhanced, compared with undoped alumina, by about two orders of magnitude, which was almost the same degree of improvement as for materials with higher dopant levels (in excess of the solubility limit). In addition, measured creep rupture curves exhibited predominantly steady-state creep behavior. Our results, therefore, verified that the creep improvement in these rare-earth doped aluminas was primarily a solid-solution effect.

Steady-state creep in alpha iron as described in terms of effective stress and dislocation dynamics

1973 ◽  
Vol 28 (5) ◽  
pp. 1099-1110 ◽  
Author(s):  
M. PahutovÁ ◽  
A. Orlová ◽  
K. Kuchařová ◽  
J. Čadek
Keyword(s):  
Steady State ◽  
Effective Stress ◽  
Steady State Creep ◽  
Dislocation Dynamics ◽  
Alpha Iron
Sign in / Sign up

Export Citation Format

Share Document