High Temperature Creep Behavior of Single Crystal Gammpraime and Gamm Laloys

1988 ◽  
Vol 133 ◽  
Author(s):  
M. V. Nathal ◽  
J. O. Diaz ◽  
R. V. Miner
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Single Crystals ◽  
Creep Behavior ◽  
Dislocation Motion ◽  
High Temperature Deformation ◽  
Temperature Deformation ◽  
High Temperature Creep ◽  
Two Phase ◽  
Temperature Creep

ABSTRACTThe creep behavior of single crystals of γ′ and γ alloys were investigated and compared to the response of two phase superalloys tested previously. High temperature deformation in the γ alloys was characteristic of a climb controlled mechanism, whereas the γ′ based materials exhibited glide controlled creep behavior. The superalloys were much more creep resistant than their constituent phases, which indicates the importance of the γ-γ′ interface as a barrier for dislocation motion during creep.

scholarly journals Effect of pre-straining treatment on high temperature creep behavior of Ni-based single crystal superalloys

2019 ◽  
Vol 167 ◽  
pp. 107633 ◽  
Author(s):  
Haibo Long ◽  
Shengcheng Mao ◽  
Yinong Liu ◽  
Hua Wei ◽  
Qingsong Deng ◽  
...  
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Creep Behavior ◽  
High Temperature Creep ◽  
Temperature Creep

scholarly journals High-Temperature Creep Behavior in Ni3(Al, Ta) Single Crystals with Different Orientations

1997 ◽  
Vol 38 (7) ◽  
pp. 653-655 ◽  
Author(s):  
Zhi-Lun Peng ◽  
Seiji Miura ◽  
Yoshinao Mishima
Keyword(s):  
High Temperature ◽  
Single Crystals ◽  
Creep Behavior ◽  
High Temperature Creep ◽  
Temperature Creep

Very high temperature creep behavior of a single crystal Ni-based superalloy under complex thermal cycling conditions

2010 ◽  
Vol 90 (8) ◽  
pp. 611-620 ◽  
Author(s):  
J. Cormier ◽  
M. Jouiad ◽  
F. Hamon ◽  
P. Villechaise ◽  
X. Milhet
Keyword(s):  
High Temperature ◽  
Thermal Cycling ◽  
Single Crystal ◽  
Creep Behavior ◽  
High Temperature Creep ◽  
Temperature Creep ◽  
Very High

Orientation Dependence of High Temperature Creep Strength and Internal Stress in Ni3Al Alloy Single Crystals

1996 ◽  
Vol 460 ◽  
Author(s):  
Seiji Miura ◽  
Zhi-Lun Peng ◽  
Yoshinao Mishima
Keyword(s):  
Shear Stress ◽  
High Temperature ◽  
Internal Stress ◽  
Single Crystals ◽  
Creep Behavior ◽  
Creep Strength ◽  
Orientation Dependence ◽  
Stress Axis ◽  
High Temperature Creep ◽  
Temperature Creep

ABSTRACTHigh temperature creep behavior of a nickel-rich Ni3(Al,Ta) with the L12 structure is investigated in order to clarify the influence of crystallographic orientation with respect to the stress axis. The single crystals with four different orientations are deformed in compressive creep at temperatures ranging from ‘M 23 to 1273 K under a constant load, initial shear stress being 35 to 120 MPa for (111)[101] slip system. The results show a distinct orientation dependence of creep strength, although shape of creep curves, stress exponent and the activation energy seem to be independent of the orientation. It is shown, however, the internal stress, being measured by strain transient dip tests, is found to be orientation dependent and the creep behavior is independent on orientation if it is interpreted using the effective stress instead of the applied shear stress.

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