Thermodynamic Analysis of Phase Equilibria in the Mg–Al–Ho Ternary System

• Tokunaga Tatsuya

  Department of Mechanical Engineering, Kagoshima University

• Kominato Hironobu

  Graduate School, Kyushu Institute of Technology

• Iikubo Satoshi

  Graduate School of Life and Systems Engineering, Kyushu Institute of Technology

• Ohtani Hiroshi

  Department of Materials Science and Engineering, Kyushu Institute of Technology

書誌事項

タイトル別名

• Thermodynamic Analysis of Phase Equilibria in the Mg–Al–Ho Ternary System

抄録

A thermodynamic analysis of phase equilibria in the Mg–Al–Ho ternary system has been carried out with special emphasis on the metastable phase separation of the hexagonal close-packed (hcp) phase. In this study, the Gibbs free energy of mixing of the hcp phase was evaluated using first-principles calculations combined with the cluster variation method (CVM), and the obtained results as well as the available experimental data were introduced into the analysis. The calculated results enabled the reproduction of experimental results on both the phase equilibria and the thermodynamic properties obtained from the first-principles calculations and the CVM. In addition, the calculations indicated a tendency for metastable two-phase separation in the hcp phase between the Mg-rich corner and the Al–Ho binary side, which was similar to the Mg–Y–Zn ternary system shown in our previous work.

収録刊行物

• MATERIALS TRANSACTIONS

  MATERIALS TRANSACTIONS 54 (5), 647-655, 2013

  公益社団法人 日本金属学会

キーワード

• thermodynamic analysis
• phase equilibria
• calculation of phase diagrams (CALPHAD)
• first-principles calculations
• metastable phase separation

詳細情報

• CRID: 1390282679225985664
• NII論文ID: 10031168405
• NII書誌ID: AA1151294X
• DOI: 10.2320/matertrans.mi201226
• ISSN: 13475320
• ISSN: 13459678
• NDL書誌ID: 024456199
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I024456199
• Web Site: https://www.jstage.jst.go.jp/article/matertrans/54/5/54_MI201226/_pdf
• 本文言語コード: en
• データソース種別:
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