Creep Strength of Yttrium Doped 4th Generation Ni-Base Single Crystal Superalloy
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- Sato Atsushi
- Department of Materials Science and Engineering, Shibaura Institute of Technology High Temperature Materials Group, Materials Engineering Laboratory, National Institute for Materials Science
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- Sato Akihiro
- High Temperature Materials Group, Materials Engineering Laboratory, National Institute for Materials Science Materials Technology Department, Research & Engineering Division, Aero-Engine & Space Operations, Ishikawajima-Harima Heavy Industries Co., Ltd.
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- Harada Hiroshi
- High Temperature Materials Group, Materials Engineering Laboratory, National Institute for Materials Science
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- Koizumi Yutaka
- High Temperature Materials Group, Materials Engineering Laboratory, National Institute for Materials Science
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- Kobayashi Toshiharu
- High Temperature Materials Group, Materials Engineering Laboratory, National Institute for Materials Science
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- Imai Hachiro
- Department of Materials Science and Engineering, Shibaura Institute of Technology High Temperature Materials Group, Materials Engineering Laboratory, National Institute for Materials Science
Bibliographic Information
- Other Title
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- 第4世代Ni基単結晶超合金のクリープ強度に及ぼす微量添加Yの影響
- ダイ4 セダイ Niキタンケッショウ チョウゴウキン ノ クリープ キョウド ニ オヨボス ビリョウ テンカ Y ノ エイキョウ
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Description
The effects of yttrium addition on high temperature properties of the 4th generation nickel-base superalloy were studied. Nickel-base superalloys, which possess both creep strength and oxidation resistance, are being required to satisfy high efficiency and reliability of jet engines. 4th generation superalloys contain platinum groups metals such as ruthenium. In order to satisfy creep strength and phase stability, however ruthenium worsens oxidation resistance. Yttrium doping was found to increase the oxidation resistance due to the improved adhesive strength of Al2O3 oxide, and the effects of yttrium doping on creep strength are established in this paper.<br> Yttrium-added TMS-138 alloy (TMS-138Y) showed high creep strength of 4th generation superalloys, however the creep strength was slightly worse than the alloy without yttrium in the high-temperature low-stress creep condition. Microstructural observations confirmed the increase of Topologically Close Packed (TCP) phases in TMS-138Y. This was due to the formation of a yttrium-containing compound, Al0.06Ni0.73Co0.04Y0.18 (at.), which made incoherent interfaces that allowed TCP phases to precipitate by heterogeneous nucleation.<br>
Journal
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- Journal of the Japan Institute of Metals and Materials
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Journal of the Japan Institute of Metals and Materials 70 (4), 380-383, 2006
The Japan Institute of Metals and Materials
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Details 詳細情報について
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- CRID
- 1390282681454439680
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- NII Article ID
- 130004455704
- 10017413510
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- NII Book ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
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- NDL BIB ID
- 7942974
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed