Dual effects of Ru on the microstructural stability of a single crystal superalloy

2021 ◽  
Vol 205 ◽  
pp. 114209
Author(s):  
Jingxia Sun ◽  
Jinlai Liu ◽  
Jinguo Li ◽  
Chao Chen ◽  
Xinguang Wang ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Crystal Superalloy ◽  
Microstructural Stability

scholarly journals Effect of Ir on the Microstructural Stability of the 6th Generation Ni-Base Single Crystal Superalloy, TMS-238

2015 ◽  
Vol 79 (4) ◽  
pp. 227-231 ◽  
Author(s):  
Yuki Takebe ◽  
Tadaharu Yokokawa ◽  
Toshiharu Kobayashi ◽  
Kyoko Kawagishi ◽  
Hiroshi Harada ◽  
...  
Keyword(s):  
Single Crystal ◽  
Single Crystal Superalloy ◽  
Microstructural Stability

Microstructural Stability of a Single Crystal Superalloy DD10 under Stressed and Un-Stressed Thermal Exposure at 980 °C

2013 ◽  
Vol 721 ◽  
pp. 3-7 ◽  
Author(s):  
Jing Yang Chen ◽  
Li Jun Liu ◽  
Xiang Hui Li ◽  
Ming Xue ◽  
La Mei Cao
Keyword(s):  
Tensile Stress ◽  
Single Crystal ◽  
Lattice Misfit ◽  
Thermal Exposure ◽  
Single Crystal Superalloy ◽  
Microstructural Stability ◽  
Misfit Stress ◽  
Topologically Close Packed ◽  
Tcp Phase ◽  
Applied Tensile Stress

The effects of applied tensile stress on the microstructural stability of a third generation single crystal superalloy DD10 have been investigated under stressed and un-stressed thermal exposure at 980 °C. The results indicated that μ phase precipitated in the dendrite core after both stressed and un-stressed thermal exposure at 980 °C for 450 h. The μ phase formation, γ′ coarsening and rafting processes were promoted by the applied tensile stress. However, the precipitation of μ phase was not sensitive to the magnitude of applied tensile stress. Meanwhile, the applied tensile stress did not affect the type and morphology of the topologically close packed (TCP) phase. It is suggested that the interaction of the applied tensile stress and the misfit stress decreased the lattice misfit between μ phase and γ matrix and promoted the formation of μ phase.

Crystal Plasticity Assessment to Crystallographic Stage I Cracking in a Ni-Based Single Crystal Superalloy

2018 ◽  
Author(s):  
Motoki Sakaguchi ◽  
Ryota Komamura ◽  
Mana Higaki ◽  
Xiaosheng Chen ◽  
Hirotsugu Inoue
Keyword(s):  
Single Crystal ◽  
Crystal Plasticity ◽  
Stage I ◽  
Single Crystal Superalloy

New Phases in a Multicomponent High Ruthenium Single Crystal Superalloy

2005 ◽  
Vol 475-479 ◽  
pp. 655-660 ◽  
Author(s):  
Q. Feng ◽  
L.J. Rowland ◽  
T.M. Pollock
Keyword(s):  
Single Crystal ◽  
Dendritic Structure ◽  
Thermal Exposure ◽  
Single Crystal Superalloy ◽  
Heusler Phase ◽  
Topologically Close Packed ◽  
Tcp Phases ◽  
Δ Phase

Three unusual Ru-rich phases have been identified in a multicomponent Ni-base single crystal superalloy, including a L21 Ru2AlTa Heusler phase, a B2 RuAl phase and a hcp Re(Ru)-rich δ phase. These phases have their own preferential precipitation location within the dendritic structure. No conventional topologically-close-packed (TCP) phases have been observed with thermal exposure at 950oC for 1500 hours.

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