書誌事項
- タイトル別名
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- Experimental Determination of Isothermal Phase Diagram at 1423 K in the Ternary Re-Cr-Ni System
- Re-Cr-Ni系における1423Kの等温状態図の実験的決定
- Re Cr Niケイ ニ オケル 1423K ノ トウオン ジョウタイズ ノ ジッケンテキ ケッテイ
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Compositions with tie-lines between the γ, α, σ, and δ phases in a ternary Re-Cr-Ni system were investigated by heat-treating various ternary Re-Cr-Ni alloys in vacuum at 1423 K for a variety of heating times up to 2500 h. The microstructures of the Re-Cr-Ni alloys that had been water-quenched after heating were observed and their Re, Cr and Ni concentration profiles were measured using an electron probe micro-analyzer (EPMA). It was found that a very long heat treatment was required to obtain equilibrium compositions of Ar-arc-melted Re-Cr-Ni alloys.<br> The tie-line compositions (at%) of each phase at 1423 K were experimentally determined, and an isothermal phase diagram was constructed. From these results, the γ, α, and σ phases of the three-phase coexistence state were found to have the following compositions: γ phase (3.0 at%Re, 45.6 at%Cr, and 51.4 at%Ni), α phase (16.1 at%Re, 75.2 at%Cr, and 8.7 at%Ni), and σ phase (16.3 at%Re, 60.3 at%Cr, and 23.4 at%Ni). In addition, the γ, σ, and δ phases have the following compositions: γ phase (13.3 at%Re, 18.1 at%Cr, and 68.6 at%Ni), σ phase (54.6 at%Re, 24.2 at%Cr, and 21.2 at%Ni), and δ phase (70.2 at%Re, 6.0 at%Cr, and 23.8 at%Ni).<br> The solubility limits of Ni in the σ phase increased from 19 at%Ni to 24 at%Ni, as the Cr content in the σ phase with a tie-line with the γ phase increased from 23 at%Cr to 61 at%Cr.<br>
収録刊行物
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- 日本金属学会誌
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日本金属学会誌 72 (2), 132-137, 2008
公益社団法人 日本金属学会
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詳細情報 詳細情報について
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- CRID
- 1390001206478830720
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- NII論文ID
- 10021149740
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- NII書誌ID
- AN00062446
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- ISSN
- 18806880
- 24337501
- 00214876
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- HANDLE
- 2115/76566
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- NDL書誌ID
- 9371354
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
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- 使用不可