Elevated temperature creep-rupture behavior of the single crystal nickel-base superalloy NASAIR 100

1985 ◽  
Vol 16 (3) ◽  
pp. 427-439 ◽  
Author(s):  
M. V. Nathal ◽  
L. J. Ebert
Keyword(s):  
Elevated Temperature ◽  
Single Crystal ◽  
Creep Rupture ◽  
Nickel Base Superalloy ◽  
Temperature Creep ◽  
Nickel Base ◽  
Base Superalloy ◽  
Rupture Behavior

Precipitation Behavior during Ageing Treatment of a Single Crystal Nickel-Base Superalloy

2005 ◽  
Vol 475-479 ◽  
pp. 673-676
Author(s):  
D.Y. Yang ◽  
Tao Jin ◽  
Na Ru Zhao ◽  
Zhi Wang ◽  
Xiao Feng Sun ◽  
...  
Keyword(s):  
Single Crystal ◽  
Rupture Life ◽  
Creep Rupture ◽  
Nickel Base Superalloy ◽  
Microstructural Stability ◽  
Precipitation Behavior ◽  
Σ Phase ◽  
Ageing Treatment ◽  
Nickel Base ◽  
Base Superalloy

The precipitation behavior during ageing treatment of a single crystal nickel-base superalloy was investigated by SEM and TEM. The results showed that tetragonal needle-like σ phase and blocky -W phase precipitated during low temperature ageing treatment after this testing alloy was completely solution heat treated. σ and -W phases robbed of solid solution strengthening alloying element W、Mo in the matrix and degraded high temperature creep rupture property severely. The creep curve of the crystal tested at 1010 °C and 248 MPa exhibited that the steady state creep rate ε was as high as 9.46 × 10-3/h. The creep-rupture life was only 25 hours. -W phase was not formed by decrease of W content properly. A relatively low level of Co could inhibit σ phase precipitation and improve microstructural stability.

Creep-rupture behavior of a directionally solidified nickel-base superalloy

2001 ◽  
Vol 32 (5) ◽  
pp. 1103-1110 ◽  
Author(s):  
J. T. Guo ◽  
C. Yuan ◽  
H. C. Yang ◽  
V. Lupinc ◽  
M. Maldini
Keyword(s):  
Creep Rupture ◽  
Nickel Base Superalloy ◽  
Directionally Solidified ◽  
Nickel Base ◽  
Base Superalloy ◽  
Rupture Behavior
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