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Metastable alloys at moderate cooling rates

  • Hans H. Stadelmaier und Günter Petzow
Veröffentlicht/Copyright: 12. Februar 2022
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International Journal of Materials Research
Aus der Zeitschrift International Journal of Materials Research Band 93 Heft 10

Abstract

Using examples, old and recent, from the metallurgical literature, we examine the sources of metastable behavior in binary and ternary alloy systems that are subjected to cooling rates in the order of K/min to K/s. Because the metastability invariably involves enhanced unstable or suppressed stable crystalline phases, the key to this behavior must be sought in the crystallization kinetics.

Abstract

Mit Hilfe von älteren und jüngeren Beispielen aus der metallkundlichen Fachliteratur werden die Ursachen des metastabilen Verhaltens binärer und ternärer Legierungen bei Abkühlungsgeschwindigkeiten in der Größenordnung 1 K/min bis 1 K/s untersucht. Der Schlüssel zu diesem Verhalten, bei dem instabile kristalline Phasen stabilisiert bzw. stabile Phasen unterdrückt werden können, muss in der Kinetik der Kristallisationsvorgänge gesucht werden.

Keywords: Metastable alloys; Cooling rate; Crystallization

Dedicated to Professor Dr. Helmut Kronmüller on the occasion of his 70th birthday

Prof. H. H. Stadelmaier Department of Materials Science and Engineering Box 7907, North Carolina State University Raleigh, NC 27695-7907, USA Tel.: +1 919 515 2349 Fax: +1 919 515 7724

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Received: 2002-07-12
Published Online: 2022-02-12

© 2002 Carl Hanser Verlag, München

Artikel in diesem Heft

  1. Frontmatter
  2. Editorial
  3. Editorial
  4. Articles/Aufsätze
  5. Interplay between chemical and magnetic roughness of Pt in a Pt/Co bilayer investigated with X-ray resonant magnetic reflectometry
  6. Thermal stability and magnetic anisotropy dispersion in high-density hard-disk media
  7. Thickness dependence of magnetization structures in thin Permalloy rectangles
  8. Solving the selectivity problem in magnetic random access memories using configurations that form C-states
  9. Second-order magnetoelastic effects: From the Dirac equation to the magnetic properties of ultrathin epitaxial films for magnetic thin-film applications
  10. Magnetic relaxation in nanocrystalline systems: linking Monte Carlo steps with time
  11. Effect of domain size on the magneto-elastic damping in amorphous ferromagnetic metals
  12. The character and role of grain boundaries in NdFeB-type alloys and magnets
  13. Magnetic domain structure and spin reorientation process
  14. Magnetic properties of Tb(Fe, Mo)12 and Tb(Fe, Mo)12C compounds
  15. Microstructure, magnetic properties and magnetic hardening in 2 : 17 Sm–Co magnets
  16. Micromagnetism and microstructure – tailoring of high-performance permanent magnets
  17. Metastable alloys at moderate cooling rates
  18. Thermal critical phenomena and crossover between critical regimes in ferromagnets with long-range interactions
  19. Vacancies in thermal equilibrium and ferromagnetism near the Curie temperature
  20. The vortex lattice in superconductors
  21. Functional substrates – a novel approach to tailor transport properties and flux-line pinning in YBa2Cu3O7 – x thin films
  22. Superconducting permanent magnets and their application in magnetic levitation
  23. Magneto-optical studies of flux pinning in high-temperature superconductors
  24. Atomic transport in amorphous metals
  25. A novel technique for measuring diffusivities of short-lived radioisotopes in solids
  26. Hydrogen four-level tunnel systems in substitutional body-centred cubic alloys
  27. Magnetic relaxation phenomena in cobalt
  28. The Verwey transition in magnetite as studied by means of definite impurity doping
  29. Notifications/Mitteilungen
  30. Personal/Personelles
  31. Bücher/Books
  32. Conferences/Konferenzen
  33. DGM Training/DGM Fortbildung
https://doi.org/10.1515/ijmr-2002-0176
Schlagwörter für diesen Artikel
Metastable alloys; Cooling rate; Crystallization

Artikel in diesem Heft

  1. Frontmatter
  2. Editorial
  3. Editorial
  4. Articles/Aufsätze
  5. Interplay between chemical and magnetic roughness of Pt in a Pt/Co bilayer investigated with X-ray resonant magnetic reflectometry
  6. Thermal stability and magnetic anisotropy dispersion in high-density hard-disk media
  7. Thickness dependence of magnetization structures in thin Permalloy rectangles
  8. Solving the selectivity problem in magnetic random access memories using configurations that form C-states
  9. Second-order magnetoelastic effects: From the Dirac equation to the magnetic properties of ultrathin epitaxial films for magnetic thin-film applications
  10. Magnetic relaxation in nanocrystalline systems: linking Monte Carlo steps with time
  11. Effect of domain size on the magneto-elastic damping in amorphous ferromagnetic metals
  12. The character and role of grain boundaries in NdFeB-type alloys and magnets
  13. Magnetic domain structure and spin reorientation process
  14. Magnetic properties of Tb(Fe, Mo)12 and Tb(Fe, Mo)12C compounds
  15. Microstructure, magnetic properties and magnetic hardening in 2 : 17 Sm–Co magnets
  16. Micromagnetism and microstructure – tailoring of high-performance permanent magnets
  17. Metastable alloys at moderate cooling rates
  18. Thermal critical phenomena and crossover between critical regimes in ferromagnets with long-range interactions
  19. Vacancies in thermal equilibrium and ferromagnetism near the Curie temperature
  20. The vortex lattice in superconductors
  21. Functional substrates – a novel approach to tailor transport properties and flux-line pinning in YBa2Cu3O7 – x thin films
  22. Superconducting permanent magnets and their application in magnetic levitation
  23. Magneto-optical studies of flux pinning in high-temperature superconductors
  24. Atomic transport in amorphous metals
  25. A novel technique for measuring diffusivities of short-lived radioisotopes in solids
  26. Hydrogen four-level tunnel systems in substitutional body-centred cubic alloys
  27. Magnetic relaxation phenomena in cobalt
  28. The Verwey transition in magnetite as studied by means of definite impurity doping
  29. Notifications/Mitteilungen
  30. Personal/Personelles
  31. Bücher/Books
  32. Conferences/Konferenzen
  33. DGM Training/DGM Fortbildung
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