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Thermodynamic assessment of Mg–Al–Mn phase equilibria, focusing on Mg-rich alloys

  • Munekazu Ohno and Rainer Schmid-Fetzer EMAIL logo
Published/Copyright: February 1, 2022
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International Journal of Materials Research
From the journal International Journal of Materials Research Volume 96 Issue 8

Abstract

A thermodynamic description of the Mg–Al –Mn system on the basis of critically assessed experimental data is presented. Particular attention is placed on the solubility of manganese in Mg-rich liquid alloys. The overall consistency between calculated and experimental phase equilibria is shown and the Calphad assessment enables a clear identification of consistency of various groups of data. In manganese-saturated liquid alloys the primary crystallizing phases are β-Mn and Al8Mn5 up to 23 wt.% Al and below 815 °C. Two invariant reactions, ε(hcp) ↔ L + β-Mn + Al8Mn5 (815 °C) and L + β-Mn ↔ Mg(hcp) + Al8Mn5 (637 °C) occur in Mg-rich liquid alloys. In addition, the solidus temperature and solid phase equilibria are given by the present thermodynamic calculation.

Keywords: Magnesium alloys; Manganese solubility; Calphad assessment; Phase diagrams
Professor Dr. Rainer Schmid –Fetzer Clausthal University of Technology, Institute of Metallurgy Robert-Koch-Str. 42, D-38678 Clausthal-Zellerfeld, Germany Tel.: +49 5323 72 2150 Fax: +49 5323 72 3120

  1. This study is supported by the German Research Foundation (DFG) in the Priority Programme “DFG-SPP 1168: InnoMagTec” under grant no. Schm 588/27.

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Received: 2004-10-27
Accepted: 2005-01-24
Published Online: 2022-02-01

© 2005 Carl Hanser Verlag, München

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https://doi.org/10.3139/ijmr-2005-0151
Keywords for this article
Magnesium alloys; Manganese solubility; Calphad assessment; Phase diagrams

Articles in the same Issue

  1. Frontmatter
  2. Articles Basic
  3. Diffusion in molybdenum disilicide
  4. Martensitic transformation, ductility, and shape-memory effect of polycrystalline Ni56Mn25 – xFexGa19 alloys
  5. Mechanical and electrical properties of Ti2SnC dispersion-strengthened copper
  6. Thermodynamic and phase relation study of the Ni–Ge –O system in the solid state
  7. Thermodynamic assessment of Mg–Al–Mn phase equilibria, focusing on Mg-rich alloys
  8. DSC study on the phase decomposition of an Al–Cu alloy occurring during annealing at 403 K
  9. Structure and thermal stability of a melt-quenched single-phase nanocrystalline Hf61Fe39 alloy
  10. Thermodynamic assessment of the ternary Cu–Pb–O system
  11. Combined EELS, EDX, and STEM investigations of Cu-induced nanostrucutures and thin surface layer phases
  12. Articles Applied
  13. Fatigue failure of titanium implants for mandibular reconstruction
  14. Solid state reaction mechanism for the synthesis of La1 – xSrxCoO3–δ (0.1 ≤ x ≤ 0.7)
  15. Dislocation structures in 16MND5 pressure vessel steel strained in uniaxial tension at –196 °C
  16. Microstructure of AZ91 alloy deformed by equal channel angular pressing
  17. The effect of copper on secondary phase precipitation in duplex stainless steel – a thermodynamic calculations approach
  18. Stretch-zone analysis by image processing for the evaluation of initiation fracture toughness of a HSLA steel
  19. Copper-lithium alloy produced by powder metallurgy procedures and its age-hardening response
  20. Effects of the local microstructures on the mechanical properties in FSWed joints of a 7075-T6 Al alloy
  21. Estimating ternary surface tension for systems with limited solubility
  22. Notifications/Mitteilungen
  23. Personal/Personelles
  24. News/Aktuelles
  25. Conferences/Konferenzen
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