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Thermodynamic calculation of Er-X and Al-Er-X compounds existing in Al-Mg-Mn-Zr-Er alloy 被引量:13

Thermodynamic calculation of Er-X and Al-Er-X compounds existing in Al-Mg-Mn-Zr-Er alloy
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摘要 Based on the Miedema model and Extended Miedema theory,the formation energies of different solute components in Er-X binary system and Al-Er-X ternary systems were calculated.The results show that the variation of erbium content has little influence on the chance rate of the formation Al-Er compound in the Al-Mg-Mn-Zr-Er system.The calculated formation energies in the Er-X binary system and Al-Er-X ternary systems indicate that Al3Er phase can take priority of depositing,Al-Er-Zr ternary compounds may also found which agrees with the experimental results in references.The consistency of calculation and experiment proves that the intermetallic compounds in the Al-Mg-Mn-Zr-Er system can be predicted directly by calculating the formation energies of the reactions in Er-X binary system and Al-Er-X ternary systems with the Miedema model and Extended Miedema theory. Based on the Miedema model and Extended Miedema theory,the formation energies of different solute components in Er-X binary system and Al-Er-X ternary systems were calculated.The results show that the variation of erbium content has little influence on the chance rate of the formation Al-Er compound in the Al-Mg-Mn-Zr-Er system.The calculated formation energies in the Er-X binary system and Al-Er-X ternary systems indicate that Al3Er phase can take priority of depositing,Al-Er-Zr ternary compounds may also found which agrees with the experimental results in references.The consistency of calculation and experiment proves that the intermetallic compounds in the Al-Mg-Mn-Zr-Er system can be predicted directly by calculating the formation energies of the reactions in Er-X binary system and Al-Er-X ternary systems with the Miedema model and Extended Miedema theory.
出处 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2010年第4期682-687,共6页 中国有色金属学报(英文版)
基金 Projects(2006AA03A207,2007AA03Z514)supported by the National High-tech Research and Development Program of China
关键词 AL3ER Miedema model Extended Miedema theory formation energy Al3Er Miedema model Extended Miedema theory formation energy
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