Partitioning behavior of Platinum Group Metals into γ and γ′ Phases of Ni-base Superalloys
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- Yokokawa Tadaharu
- High Temperature Materials Group, Materials Engineering Laboratory, National Institute for Materials Science
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- Osawa Makoto
- High Temperature Materials Group, Materials Engineering Laboratory, National Institute for Materials Science
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- Nishida Kenji
- Surface Analysis Group, Analysis Station, 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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- Harada Hiroshi
- High Temperature Materials Group, Materials Engineering Laboratory, National Institute for Materials Science
Bibliographic Information
- Other Title
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- Ni基超合金中の白金族元素のγ⁄γ′相分配
- Ni基超合金中の白金族元素のγ/γ'相分配
- Niキ チョウゴウキン チュウ ノ ハッキンゾク ゲンソ ノ ガンマ ガンマ ソウ ブンパイ
- Partitioning behavior of Platinum Group Metals into γ and γ′ Phases of Ni-base Superalloys
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Description
The partitioning behavior of platinum group metals (PGM) into γ matrix and γ′ precipitates for γ′ precipitation hardening Ni-base superalloys has been investigated using electron probe X-ray micro-analyzer (EPMA). The TMS-75 (Ni-12 mass%Co-3 mass%Cr-2 mass%Mo-6 mass%W-6 mass%Al-6 mass%Ta-5 mass%Re-0.1 mass%Hf) and five alloys with 1 at%PGM additions to TMS-75 were investigated. It became clear that in equilibrium state at 1100°C, Ir is slightly partitioned more into γ′ precipitates, Ru has a preference to partition into γ matrix, in contrast Rh, Pd and Pt are partitioned into γ′ precipitates, and the partitioning ratio of these elements is about Kiγ⁄γ′≈1⁄2. Furthermore, it appears that the partitioning behavior of refractory elements, such as W, Re, are not so changed by PGM addition, for example, Re is partitioned into γ matrix in any alloy (KReγ⁄γ′ is in range of 6 to 7.5).
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 66 (9), 873-876, 2002
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
- 1390282681468403456
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- NII Article ID
- 10010465046
- 130007342271
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- NII Book ID
- AN00187860
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- ISSN
- 18806880
- 24337501
- 00214876
- http://id.crossref.org/issn/00214426
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- NDL BIB ID
- 6293760
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed