Ni<SUB>3</SUB>Al(γ'相)におけるReの占有サイトとNi-Al-Re三元系のγ-γ'相平衡

• 宮崎 省吾

  豊橋技術科学大学大学院生

• 村田 純教

  豊橋技術科学大学

• 森永 正彦

  豊橋技術科学大学

書誌事項

タイトル別名

• Site Occupancy of Re Atoms in Ni<SUB>3</SUB>Al(γ') and γ-γ' Phase Equilibria in Ni-Al-Re Ternary Alloys
• Ni3Al(γ′相)におけるReの占有サイトとNi-Al-Re3元系のγ-γ′相平衡
• Ni3Al ガンマ ソウ ニ オケル Re ノ センユウ サイト ト Ni A
• Site Occupancy of Re Atoms in Ni<SUB>3</SUB>Al(&gamma;') and &gamma;-&gamma;' Phase Equilibria in Ni-Al-Re Ternary Alloys

抄録

Alloying behaviour of (rhenium) Re in Ni-based superalloys was investigated experimentally. Firstly, the site preference, of Re Atoms in Ni₃Al(γ') which is a main strengthening phase in the superalloys, was determined by the ALCHEMI. Secondly, the partitioning ratios of alloying elements between the γ and the γ' phases, and also the phase stability in a Ni-Al-Re ternary system were examined by the EPMA analysis and the microstructural observation as well. As the result, it was shown that Re atoms located preferably in the Al site with about 5378% occupation fraction in the Ni₃Al-2mol% Re compound. The trend of the partitioning of Re atoms into the γ' phase decreased with increasing Re in Ni-Al-Re ternary alloys. In addition, the α-phase which is a Re-rich solid solution, precipitated in the Ni-Al-Re ternary alloys containing more than 2mol% Re.

収録刊行物

• 鉄と鋼

  鉄と鋼 80 (2), 161-165, 1994

  一般社団法人 日本鉄鋼協会

キーワード

• Ni-based superalloy
• ALCHEMI
• partitioning ratio
• phase diagram

詳細情報

• CRID: 1390001205215916160
• NII論文ID: 110001493758
• NII書誌ID: AN00151251
• DOI: 10.2355/tetsutohagane1955.80.2_161
• ISSN: 18832954
• ISSN: 00211575
• NDL書誌ID: 3867461
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I3867461
• Web Site: https://www.jstage.jst.go.jp/article/tetsutohagane1955/80/2/80_2_161/_pdf
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