Startseite Experimental Investigation and Thermodynamic Calculation of the Ternary System Mn–Y–Zr
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Experimental Investigation and Thermodynamic Calculation of the Ternary System Mn–Y–Zr

  • Hans Flandorfer , Joachim Gröbner , Athanasis Stamou , Nikitas Hassiotis , Adriana Saccone , Peter Rogl , Ria Wouters , Hans Seifert , Daniele Macciò , Riccardo Ferro , Gregory Haidemenopoulos , Luc Delaey und Günter Effenberg
Veröffentlicht/Copyright: 2. Dezember 2021
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 88 Heft 7

Abstract

Phase equilibria were established in the ternary system Mn–Y–Zr for an isothermal section at 800 °C by use of X-ray powder diffraction, light optical microscopy and quantitative EPMA. No ternary compounds were observed. Mutual solid solubilities among the binary phases were found to be generally less than ~ 2 at.%. Solubility of Mn, Y in αZr at 800 °C was 2.1 at.% Mn and 2.9 at.% Y, whereas no Mn dissolves in α Y. A reinvestigation of the binary solid solubility limits of Mn2Zr1−x at 800 °C by quantitative EPMA and X-ray powder full profile analyses revealed a smaller homogeneous region, Mn2Zr1−x, 0 ≤ x ≤ 0.20, than previously reported in literature. There is little solubility of Y in stoichiometric Mn2Zr and maximum solubility of Mn, Zr in αY was determined from as cast alloys to be 1.8 at.% Mn and 2.4 at.% Zr.

Based on this experimental findings and the literature data relevant to the binary systems a thermodynamic calculation of the ternary system was attempted, requesting a significantly higher heat of formation of Mn2Zr than previously reported. A nearly pseudobinary section was experimentally established for the join Y–Mn2Zr with a maximum eutectic at 1072 ± 10°C at 57 at.% Y (calculated at 1064 °C and 58 % Y). Three ternary eutectics were defined: L⇔Mn2Zr + Mn2Y + Mn23Y6 at 1090 ± 10 °C at a composition of Mn75Y23Zr2 (calculated at 1087 °C and at Mn72Y26Zr2), L ⇔ (αY) + Mn2Y + Mn2Zr at 870 ± 10 °C at a composition of Mn40Y57Zr3 (calculated at 883 °C and at Mn36Y63Zr1) and L ⇔ (αY)+ (βZr) + Mn2Zr at 1054 ± 10 °C at a composition of Mn26Y15Zr59 (calculated at Mn24Y21Zr55 and at 992 °C).

Hans Flandorfer1, Joachim Grobner1,2, Athanasis Stamou1,3, Nikitas Hassiotis1,3, Adriana Saccone4, Peter Rogl1, Ria Wouters5, Hans Sei- fert2, Daniele Maccio4, Riccardo Ferro4, Gregory Haidemenopou- los3, Luc Delaey5 and Giinter Effenberg2
1Institut fur Physikalische Chemie, Universitat Wien, Wahringer- straBe 42, A-1090 Wien/Austria; 2Material Science International, Nobelstr. 15, Postfach 800749, D-70507 Stuttgart, Germany; 3Laboratory of Materials, Dept. of Mechanical Engineering, University of Thessaly, Pedion Areos, Volos, Greece; 4Dipartimento di Chimica e Chimica Industriale, Universita di Genova, Sezione di Chimica Inorganica e Metallurgia, Via Dodecaneso 31, I-16146 Genova, Italy; 5Department of Metallurgy and Materials Engineering, Katholieke Universiteit Leuven, de Croylaan 2, B-3001 Heverlee, Belgium

Funding statement: This research was sponsored via the EU as a HCM-network CHRX- CT93-0284. The Austrian part was supported by the FFWF under grant P9709. R.F. and P.R. are grateful to the Austrian – Italian Scientific - Technical Exchange Program for fellowships in Genova and Wien, respectively (project N13). This exchange program provided the starting activity in the early stage of this research cooperation. Particularly the assistance of Dr. A. Sasso, Dr. E. Campo, Dr. V. Manno from the Italian Embassy and Mag. Koppensteiner and Dr. Zeinar from the Austrian Institute for Academic Exchange is greatly acknowledged

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Received: 1996-10-21
Published Online: 2021-12-02

© 1997 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Frontmatter
  2. Aufsätze
  3. Characterisation of γ′ Precipitates in Single Crystal Nickel-base Superalloy SC16 by Small Angle Neutron Scattering
  4. The Excess Enthalpies of Liquid Ge–Pb–Te Alloys
  5. Experimental Investigation and Thermodynamic Calculation of the Ternary System Mn–Y–Zr
  6. The Fe-Zn-Ti System at 450 °C
  7. Thermodynamic Assessment of the V–N System
  8. Schmelzfläche und Phasengleichgewichte mit Beteiligung der Schmelze im System Al-AlCo-AlNi
  9. Shear Bands In Cold Rolled Al–Mg Alloy Polycrystals
  10. Rolling and Recrystallization Textures in High Purity Al–Mg Alloys
  11. Effect of Modified Postweld Heat Treatment on Disbonding of 2.25 Cr-1 Mo Steel Overlay Welded with Austenitic Stainless Steel
  12. Effect of Vanadium Addition on Disbonding of 2.25Cr–1Mo Steel Overlay Welded with Austenitic Stainless Steel
  13. Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
  14. Personen
  15. Mitteilung aus dem Materialprüfungsamt Nordrhein-Westfalen
  16. Buchbesprechung
  17. Fortbildungsseminar
https://doi.org/10.3139/ijmr-1997-0099

Artikel in diesem Heft

  1. Frontmatter
  2. Aufsätze
  3. Characterisation of γ′ Precipitates in Single Crystal Nickel-base Superalloy SC16 by Small Angle Neutron Scattering
  4. The Excess Enthalpies of Liquid Ge–Pb–Te Alloys
  5. Experimental Investigation and Thermodynamic Calculation of the Ternary System Mn–Y–Zr
  6. The Fe-Zn-Ti System at 450 °C
  7. Thermodynamic Assessment of the V–N System
  8. Schmelzfläche und Phasengleichgewichte mit Beteiligung der Schmelze im System Al-AlCo-AlNi
  9. Shear Bands In Cold Rolled Al–Mg Alloy Polycrystals
  10. Rolling and Recrystallization Textures in High Purity Al–Mg Alloys
  11. Effect of Modified Postweld Heat Treatment on Disbonding of 2.25 Cr-1 Mo Steel Overlay Welded with Austenitic Stainless Steel
  12. Effect of Vanadium Addition on Disbonding of 2.25Cr–1Mo Steel Overlay Welded with Austenitic Stainless Steel
  13. Mitteilungen der Deutschen Gesellschaft für Materialkunde e.V.
  14. Personen
  15. Mitteilung aus dem Materialprüfungsamt Nordrhein-Westfalen
  16. Buchbesprechung
  17. Fortbildungsseminar
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