scholarly journals A 5th Generation Ni-Base Single Crystal Superalloy Designed for the Combination of Excellent Oxidation Resistance and Creep Strength at Elevated Temperatures

2006 ◽  
Vol 70 (2) ◽  
pp. 196-199 ◽  
Author(s):  
Akihiro Sato ◽  
Hiroshi Harada ◽  
Toshiharu Kobayashi ◽  
Takao Murakumo ◽  
Jianxin Zhang ◽  
...  

2014 ◽  
Vol 915-916 ◽  
pp. 562-566 ◽  
Author(s):  
Z.X. Shi ◽  
Shi Zhong Liu ◽  
M. Han ◽  
J.R. Li

The specimens of single crystal superalloy DD6 with 0.10% Hf and 0.47% Hf were prepared in the directionally solidified furnace. The effect of Hf content on the isothermal oxidation resistance of the second generation single crystal superalloy DD6 was studied at 1000°Cin ambient atmosphere. Morphology of oxides was examined by SEM, and their composition was analyzed by XRD and EDS. The experimental results show that the oxidation resistance of DD6 alloy with 0.47% Hf is better than that of the alloy with 0.10% Hf. The alloy with different Hf content all obeys parabolic rate law during oxidation for 100h at 1000°C. The increase of Hf content can promote the Al2O3 formation and decreases the proportion of NiO. The oxide grain size and the thickness of the oxide layer all reduce with increasing of Hf content. The oxide scale of the alloy with different Hf content is made up of an outer NiO layer with a small amount of Co3O4, inner Al2O3 and Cr2O3 layer with a small amount of TaO2.



2004 ◽  
Vol 68 (3) ◽  
pp. 206-209 ◽  
Author(s):  
Yutaka Koizumi ◽  
Toshiharu Kobayashi ◽  
Tadaharu Yokokawa ◽  
Makoto Osawa ◽  
Hiroshi Harada ◽  
...  


2019 ◽  
Vol 50 (8) ◽  
pp. 3903-3911 ◽  
Author(s):  
Takuya Sugiyama ◽  
Satoshi Utada ◽  
Tadaharu Yokokawa ◽  
Makoto Osawa ◽  
Kyoko Kawagishi ◽  
...  




2020 ◽  
Vol 58 ◽  
pp. 63-72 ◽  
Author(s):  
Jingchen Li ◽  
Liangliang Wei ◽  
Jian He ◽  
Hao Chen ◽  
Hongbo Guo


2006 ◽  
Vol 70 (4) ◽  
pp. 380-383 ◽  
Author(s):  
Atsushi Sato ◽  
Akihiro Sato ◽  
Hiroshi Harada ◽  
Yutaka Koizumi ◽  
Toshiharu Kobayashi ◽  
...  


2015 ◽  
Vol 649 ◽  
pp. 515-530 ◽  
Author(s):  
Long Shi ◽  
Li Xin ◽  
Xinyue Wang ◽  
Xiaolan Wang ◽  
Hua Wei ◽  
...  


2010 ◽  
Vol 26 (4) ◽  
pp. 306-310 ◽  
Author(s):  
Chengbao Liu ◽  
Jian Shen ◽  
Jian Zhang ◽  
Langhong Lou


2007 ◽  
Vol 454-455 ◽  
pp. 357-366 ◽  
Author(s):  
Y. Liu ◽  
J.J. Yu ◽  
Y. Xu ◽  
X.F. Sun ◽  
H.R. Guan ◽  
...  


2005 ◽  
Vol 69 (2) ◽  
pp. 241-244 ◽  
Author(s):  
Toshiharu Kobayashi ◽  
Yutaka Koizumi ◽  
Hiroshi Harada ◽  
Tadaharu Yokokawa ◽  
J. X. Zhang ◽  
...  


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