Effects of Heat Treatment on Microstructural Evolution and Stress Rupture Properties of a Directionally Solidified Nickel-Based Superalloy during Long-Term Thermal Exposure

2020 ◽  
Vol 29 (4) ◽  
pp. 2395-2409
Author(s):  
X. W. Jiang ◽  
J. J. Wu ◽  
P. Song ◽  
B. Yin ◽  
D. Wang ◽  
...  
Keyword(s):  
Heat Treatment ◽  
Microstructural Evolution ◽  
Stress Rupture ◽  
Thermal Exposure ◽  
Directionally Solidified ◽  
Nickel Based Superalloy ◽  
Stress Rupture Properties ◽  
Rupture Properties

Effects of Ruthenium on Microstructure and Stress Rupture Properties of a Nickel-Base Single Crystal Superalloy

2013 ◽  
Vol 747-748 ◽  
pp. 777-782
Author(s):  
Shuai Yang ◽  
Jian Zhang ◽  
Yu Shi Luo ◽  
Yun Song Zhao ◽  
Ding Zhong Tang ◽  
...  
Keyword(s):  
Volume Fraction ◽  
Stress Rupture ◽  
Thermal Exposure ◽  
Microstructural Stability ◽  
Stress Rupture Properties ◽  
Tcp Phases ◽  
Mean Size ◽  
Nickel Base ◽  
Rupture Properties

The effect of Ru addition (0 wt.%, 3 wt.%, 5 wt.%), on γ morphology, elemental segregation, microstructural stability under long-term thermal exposure at 980 and stress rupture properties at 1100°C/130MPa have been studied. The results showed that with the increase of Ru content, the γ/γ eutectic volume fraction and the dendrite arm spacing decreased gradually. The γ' phase mean size in three alloys decreased with the increase of the Ru content. On the other hand, the dendrite segregation of Al, Ta towards interdendrite area and ReW towards dendrite core area was alleviated gradually with the increase of the Ru content. The increase of Ru content from 0 wt.% to 5 wt.% pronouncedly enhanced the stress rupture properties by suppressing the precipitation of TCP phases effectively at high temperature.

Effect of Long-term Thermal Exposure on Microstructure and Stress Rupture Properties of GH3535 Superalloy

2015 ◽  
Vol 31 (3) ◽  
pp. 269-279 ◽  
Author(s):  
T. Liu ◽  
J.S. Dong ◽  
L. Wang ◽  
Z.J. Li ◽  
X.T. Zhou ◽  
...  
Keyword(s):  
Stress Rupture ◽  
Thermal Exposure ◽  
Stress Rupture Properties ◽  
Rupture Properties
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