Comparison of Growth, Disease, and High Temperature Damage in Slope and Small Tunnel Type Shading of Ginseng Facilities

2021 ◽  
Vol 29 (6) ◽  
pp. 380-387
Author(s):  
Yeoung Seuk Bae ◽  
Eun Sung Lim ◽  
Su Jeoung Suh ◽  
Jin Yu ◽  
In Bae Jang ◽  
...  
Keyword(s):  
High Temperature ◽  
Temperature Damage

High-temperature damage evolution in 10 keV He+ irradiated W and W-5Re

2018 ◽  
Vol 145 ◽  
pp. 77-86 ◽  
Author(s):  
Xiaoou Yi ◽  
Kazuto Arakawa ◽  
Francesco Ferroni ◽  
Michael L. Jenkins ◽  
Wentuo Han ◽  
...  
Keyword(s):  
High Temperature ◽  
Damage Evolution ◽  
Temperature Damage

High-temperature damage-tolerance of coextruded, bioinspired (“nacre-like”), alumina/nickel compliant-phase ceramics

2019 ◽  
Vol 158 ◽  
pp. 110-115 ◽  
Author(s):  
Ryan P. Wilkerson ◽  
Bernd Gludovatz ◽  
Jon Ell ◽  
Jeremy Watts ◽  
Gregory E. Hilmas ◽  
...  
Keyword(s):  
High Temperature ◽  
Damage Tolerance ◽  
Temperature Damage

High Temperature Damage of Ni-Base Superalloy Caused by the Change of Microtexture due to the Strain-Induced Anisotropic Diffusion of Component Elements

2011 ◽  
Author(s):  
Hideo Miura ◽  
Ken Suzuki ◽  
Yamato Sasaki ◽  
Tomohiro Sano ◽  
Naokazu Murata
Keyword(s):  
High Temperature ◽  
Anisotropic Diffusion ◽  
Axial Strain ◽  
Creep Damage ◽  
Face Centered Cubic ◽  
Directional Coarsening ◽  
Damage Process ◽  
Temperature Damage ◽  
Face Centered ◽  
Base Superalloy

In order to assure the reliability of advanced gas turbine systems, it is very important to evaluate the damage of high temperature materials such as Ni-base superalloys under creep and fatigue conditions quantitatively. Since the micro texture of the gamma-prime (γ′) phase was found to vary during the creep damage process, it is possible, therefore, to evaluate the creep damage of this material quantitatively by measuring the change of the micro texture. The mechanism of the directional coarsening of γ′ phasesof Ni-base superalloy under uni-axial strain at high temperatures, which is called rafting, was analyzed by using molecular dynamics (MD) analysis. The stress-induced anisotropic diffusion of Al atoms perpendicular to the finely dispersed γ/γ′ interface in the superalloy was observed clearly in a Ni(001)/Ni3Al(001) interface structure. The stress-induced anisotropic diffusion was validated by experiment using the stacked thin films structures which consisted of the (001) face-centered cubic (FCC) interface. The reduction of the diffusion of Al atoms perpendicular to the interface is thus, effective for improving the creep and fatigue resistance of the alloy. It was also found by MD analysis that the dopant elements in the superalloy also affected the strain-induced diffusion of Al atoms. Both palladium and tantalum were effective elements which restrain Al atoms from moving around the interface under the applied stress, while titanium and tungsten accelerated the strain-induced anisotropic diffusion, and thus, the rafting phenomenon.

scholarly journals Mechanisms of High Temperature Damage in Elastoplastic Cyclic Loading of Nickel Superalloys and TiAl Intermetallics

2013 ◽  
Vol 55 ◽  
pp. 114-122 ◽  
Author(s):  
Jaroslav Polák ◽  
Karel Obrtlík ◽  
Martin Petrenec ◽  
Jiří Man ◽  
Tomáš Kruml
Keyword(s):  
High Temperature ◽  
Cyclic Loading ◽  
Nickel Superalloys ◽  
Tial Intermetallics ◽  
Temperature Damage
Sign in / Sign up

Export Citation Format

Share Document