scholarly journals Influence of Stress Wave Form on Fatigue Strength of Single Crystal Nickel-Base Superalloy.

1998 ◽  
Vol 47 (3) ◽  
pp. 266-272
Author(s):  
Koji KAKEHI
Keyword(s):  
Fatigue Strength ◽  
Single Crystal ◽  
Stress Wave ◽  
Wave Form ◽  
Nickel Base Superalloy ◽  
Nickel Base ◽  
Base Superalloy

Synchrotron 3D μ-Tomography of Porosity during Hot Isostatic Pressing of a Single-Crystal Nickel-Base Superalloy

2021 ◽  
Vol 1016 ◽  
pp. 102-106
Author(s):  
Alexander Epishin ◽  
Bettina Camin ◽  
Lennart Hansen ◽  
Jonas Schmidt
Keyword(s):  
Fatigue Strength ◽  
High Resolution ◽  
Single Crystal ◽  
Hot Isostatic Pressing ◽  
European Synchrotron Radiation Facility ◽  
Nickel Base Superalloy ◽  
Isostatic Pressing ◽  
Long Time ◽  
Nickel Base ◽  
Base Superalloy

The evolution of microporosity in single-crystal nickel-base superalloy CMSX-4 during hot isostatic pressing has been investigated by high resolution tomography at the European Synchrotron Radiation Facility in Grenoble. The kinetic dependencies of microporosity annihilation in the superalloy in initially as-cast and homogenized conditions were obtained. It was shown that smaller homogenization pores of about 5-10 μm in size are rapidly annihilate during hot isostatic pressing, while annihilation of larger solidification pores of size up to a few hundred micrometer takes a long time. After commercial hot isostatic pressing at 1288 °C, 103 MPa, 4 h only rare pores smaller than 20 μm remain, which are not critical for fatigue strength.

Microstructural evolution of a single crystal nickel-base superalloy during thermal exposure

2003 ◽  
Vol 57 (29) ◽  
pp. 4540-4546 ◽  
Author(s):  
L.R. Liu ◽  
T. Jin ◽  
N.R. Zhao ◽  
Z.H. Wang ◽  
X.F. Sun ◽  
...  
Keyword(s):  
Single Crystal ◽  
Microstructural Evolution ◽  
Thermal Exposure ◽  
Nickel Base Superalloy ◽  
Nickel Base ◽  
Base Superalloy

Evaluation of Multicomponent Nickel Base LI2 and Other Intermetallic Alloys as High Temperature Structural Materials

1986 ◽  
Vol 81 ◽  
Author(s):  
D. M. Shah ◽  
D. N. Duhl
Keyword(s):  
High Temperature ◽  
Single Crystal ◽  
Single Crystals ◽  
Impact Resistance ◽  
High Strength ◽  
Structural Materials ◽  
Nickel Base Superalloy ◽  
Intermetallic Alloys ◽  
Nickel Base ◽  
Base Superalloy

AbstractMulticomponent nickel base intermetallics with the L12 structure were evaluated as high temperature structural materials. The compounds were based on the γ' composition of PWA 1480, a high strength single crystal nickel base superalloy. The best balance of properties in the compound was achieved with <111> oriented single crystals but no significant advantage could be demonstrated over the precipitation hardened superalloys. Insufficient impact resistance was a major deficiency of the L12 compounds. Other nickel base intermetallics were also evaluated but showed little advantage over superalloys.

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