Solution Heat Treatment Optimization of Fourth-Generation Single-Crystal Nickel-Base Superalloys

2012 ◽  
Vol 43 (9) ◽  
pp. 3264-3282 ◽  
Author(s):  
Hon Tong Pang ◽  
Lijuan Zhang ◽  
Robbie A. Hobbs ◽  
Howard J. Stone ◽  
Catherine M.F. Rae
2015 ◽  
Vol 17 (10) ◽  
pp. 1486-1493 ◽  
Author(s):  
Markus Ramsperger ◽  
Laís Mújica Roncery ◽  
Inmaculada Lopez-Galilea ◽  
Robert F. Singer ◽  
Werner Theisen ◽  
...  

2005 ◽  
Vol 53 (3) ◽  
pp. 669-679 ◽  
Author(s):  
Sharat C. Prasad ◽  
I.J. Rao ◽  
K.R. Rajagopal

2009 ◽  
Vol 19 (3) ◽  
pp. 2564-2567 ◽  
Author(s):  
T. Boutboul ◽  
L. Oberli ◽  
A. den Ouden ◽  
D. Pedrini ◽  
B. Seeber ◽  
...  

2015 ◽  
Vol 750 ◽  
pp. 139-144 ◽  
Author(s):  
De Long Shu ◽  
Su Gui Tian ◽  
Xin Ding ◽  
Jing Wu ◽  
Qiu Yang Li ◽  
...  

By means of heat treatment and creep property measurement, an investigation has made into the creep behaviors of a containing 4.5% Re nickel-base single crystal superalloy at high temperature. Results show that the elements W, Mo and Re are enriched in the dendrite arm regions, the elements Al, Ta, Cr and Co are enriched in the inter-dendrite region, and the segregation extent of the elements may be obviously reduced by means of heat treatment at high temperature. In the temperature ranges of 1070--1100 °C, the 4.5% Re single crystal nickel-based superallloy displays a better creep resistance and longer creep life. The deformation mechanism of the alloy during steady state creep is dislocations slipping in the γ matrix and climbing over the rafted γ′ phase. In the later stage of creep, the deformation mechanism of alloy is dislocations slipping in the γ matrix, and shearing into the rafted γ′ phase, which may promote the initiation and propagation of the micro-cracks at the interfaces of γ/γ′ phases up to the occurrence of creep fracture.


2014 ◽  
Vol 45 (13) ◽  
pp. 6231-6251 ◽  
Author(s):  
S. L. Semiatin ◽  
J. M. Shank ◽  
A. R. Shiveley ◽  
W. M. Saurber ◽  
E. F. Gaussa ◽  
...  

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